DOCSLIB.ORG

APS News, October 2017, Volume 26, No. 9

Total Page：16

File Type：pdf, Size：1020Kb

Download full-text PDF Read full-text
APS News, October 2017, Volume 26, No. 9 October 2017 • Vol. 26, No. 9 A PUBLICATION OF THE AMERICAN PHYSICAL SOCIETY ICARUS Arrives Intact Page 4 APS.ORG/APSNEWS 2017 APS Division of Particles and Fields Meeting International News By Eran Moore Rea violated, but only for quarks. It is 2017 Canadian-American-Mexican Conference Three particle physics collabo- possible that CP-violation is the rations announced significant new reason behind the matter-antimatter By Midhat Farooq asymmetry of the universe (that is, experimental results at the 2017 On the morning of August 17th, APS Division of Particles and that despite current big bang pre- dictions, the universe is dominated almost 100 physics graduate stu- Fields meeting from July 31 – dents from Mexico, the United Midhat Farooq August 4 at Fermilab. by matter—humans, trees, stuff— and very little antimatter), but only States, Canada, and Cuba sat in a CP violation with neutrinos: if it is present for leptons as well room together at the first session of 2 sigma as quarks. the 2017 APS Canadian-American- The Tokai to Kamioka (T2K) Particle physicists call a 2-sigma Mexican Graduate Student Physics collaboration shoots a beam of result like T2K’s an observa- Conference (CAM), held in neutrinos across Japan to measure tion—that is, not yet a definitive Washington D.C. Quiet anticipation the ways neutrinos can change discovery. 2-sigma means 95.5% filled the air as the students waited from one type to another during confidence, which might seem for the conference to begin, look- the journey. On Friday, August 4 like enough, but with so much ing around at their international 2017, Chang Kee Jung, former data in large physics experiments, peers with friendly smiles, excited International Co-spokesperson for scientists have mostly agreed that to meet each other and share their the T2K collaboration, presented 5 sigma, or 99.99994% is the research and experiences in the fol- the first experimental indica- “gold standard” to claim an actual lowing days. One might wonder Graduate students from Canada, the U.S., Mexico, and Cuba in Washington D.C. tion of charge-parity violation in discovery. what brought such a diverse group neutrinos. “Today’s result … gives us a of students together. form for physicists from all over place biennially, with the previ- Charge-parity (CP) symmetry reachable target,” Jung said. He Back in 1994, the Canadian the continent to come together for ous two held in Waterloo, Canada is the theory that elementary par- expects in the next several years Association of Physicists (CAP), intellectual discussion, professional (2013) and Oaxaca, Mexico (2015). ticles will act in the same way even that T2K as well as the NOvA APS, and Sociedad Mexicana de development, and the opportunity This past August, CAM2017 when the spatial coordinates are experiment at Fermilab will be able Física (SMF) jointly hosted the to form collaborations. In subse- embraced the theme “Transcending inverted and the sign of the charge to reach 3 sigma, and once DUNE first international North American quent years, CAM was redesigned Boundaries.” they carry is flipped. CP-symmetry physics conference, in Cancun, to serve graduate students exclu- As the conference is largely has previously been proven to be DPF continued on page 6 Mexico, which provided a plat- sively. Since then, it has taken CAM continued on page 4 Forging New Connections Virgo & LIGO: Joint Detection of Gravitational Waves By Abhishek Agarwal and The workshop took place By David Voss science ministers in Turin, Italy, factor of around 20 compared with Samindranath Mitra in Riverhead, Long Island in and a paper describing the detec- On September 27, research- LIGO’s previous detections. August. The scientific program tion has been accepted for publica- Each of these three detec- The editors of Physical Review ers from the Advanced Laser was designed by Subir Sachdev, tion by Physical Review Letters. tors, LIGO’s two in Hanford, Letters, who have a ringside Interferometer Gravitational a condensed matter physicist at The signal, which was observed Washington and Livingston, view of emerging research direc- Wave Observatory (LIGO) and tions, are seeing more papers that Harvard who often collaborates on August 14, 2017, comes from a Louisiana, and Virgo’s in Pisa, Italy, the Advanced Virgo Detector merger of a black hole 30.5 times address condensed matter physics with high energy physicists, and recorded the characteristic “chirp” announced their joint detection the mass of the sun with another with techniques and ideas from John McGreevy, a string theorist at signal of the black holes circling of a gravitational wave signal black hole 25.3 times the mass quantum field and string theories, the University of California at San each other, then speeding up and from the coalescence of two black of the sun. The event occurred often with authors from both com- Diego who now focuses mainly on merging. By comparing the waves’ holes. The observation by three 540 megaparsecs from Earth, or munities. So, when then Editor in condensed matter physics. Around arrival time at each detector, the detectors (two from LIGO and the about 1.8 billion light years away. Chief Pierre Meystre launched the thirty early, midcareer, and senior researchers were able to improve Virgo detector) allows the teams Because the gravitational wave “Physics Next” series of workshops theorists and experimentalists gath- the determination of the source to improve their ability to iden- detection network involves three on topics that are “beginning to ered over three days to discuss direction. Previous detections by tify where in the sky the waves are detectors, the researchers have emerge from the noise,” the over- four broad topics—topological LIGO involved two detectors, coming from. The announcement been able to narrow down the lap of quantum field theory and phases, many-body localization and was made at a meeting of the G7 location of the signal source by a VIRGO continued on page 5 condensed matter physics was a quantum chaos, anomalous trans- logical choice. WORKSHOPS continued on page 4 Research News: Editors’ Choice physics.aps.org Daniel Ucko A Monthly Recap of Papers Selected by the Editors Spinning a tale of graphene approached that of the strongest and spiders artificial carbon fibers and natural Spider silk is known for its high materials (limpet teeth). These new tensile strength and toughness, but Istockphoto results show that a possible way researchers have now found they toward improved silk fibers for a can improve on nature by feeding variety of applications may indeed graphene and carbon nanotubes lie through the spiders’ stomachs. to these tiny weavers. Lepore et Nuclear Fluid Swirls at al. report in 2D Materials (DOI: Record-Breaking Speed 10.1088/2053-1583/aa7cd3) that Observations of gold ion col- Researchers and editors of the Physical Review journals at the second after spraying water contain- lisions reveal that the post-crash Physics Next workshop Carbon diet for better silk ing graphene flakes or carbon nuclear matter rotates faster than nanotubes into a corner of a box ter, the researchers measured the any other recorded fluid. This of spiders, and waiting until the silk that was successfully obtained, strong swirling occurs in a hot animals had ingested the mixture, and they used Raman spectroscopy mixture of quarks and gluons, the resulting silk was markedly to characterize the molecular struc- called the quark-gluon plasma. stronger and tougher. The team ture of the unmodified and modi- Created in heavy ion collisions, tested the carbon diet on 21 spi- fied silk samples. On average, the this plasma was presumably the ders of three different species (alas, team notes, the strength and tough- dominant form of matter during 6 died before their silk could be ness of the silk from nanotube-fed obtained). Using a nanotensile tes- spiders surpassed natural silk and RESEARCH continued on page 6 2 • October 2017 Spotlight on Development This Month in Physics History Shining the Spotlight on You October 1910: First infrared photographs published Dear APS member, These above programs have As the end of 2017 fast been recognized both nationally nfrared photography is an invaluable workhorse between runs when the Frenchman wasn’t look- approaches, we wish to thank you and internationally for their value Itool across many different scientific fields and ing, and when Blondlot still claimed to observe for your continued involvement and to the physics community in help- practical applications, as well as a popular hobby N-rays on the second run, Wood concluded he support. We know that at this time ing inspire and prepare the next among professional and amateur photographers. was deluding himself, and wrote a letter to Nature of the year you have many choices generation of physicists. And we owe its existence—as well as that of ultra- debunking the claim. violet photography—to an enterprising American The year before, in 1903, Wood invented an of worthy, charitable causes and Here is what some of you have related year-end campaigns, and we physicist and inventor named Robert Williams ultraviolet filter for photography, which he made said about the reasons for giving are most grateful for your willing- Wood, best known in scientific circles for his from nitroso-dimethyl-aniline, combined with a to APS. ness to keep APS in mind. research on optics and spectroscopy. small amount of a dye called uranine. This made Thanks in part to your finan- “APS programs make a big dif- Infrared radiation was discovered in 1800 by the filter block visible light but transmit ultravio- cial generosity, APS has built ference to students and researchers; Sir Frederick William Herschel, best known for let, and he used it to take the first photographs of an impressive track record of I know my donation is effectively building telescopes and ultraviolet fluorescence.
Load more

Recommended publications
  • Research/Teaching Statement Gerard Awanou 1 Trivariate Splines
    Research/Teaching statement Gerard Awanou I would like to describe in this statement the research I have done and comment on future directions. My work has been on trivariate splines for scattered data in- terpolation and numerical solution of partial differential equations, particularly, the Navier-Stokes equations. Another line of my research is mathematical finance. I have been interested in risk minimization in regime switching and two factor stochastic volatility models. I will describe my recent success in the construction of a family of mixed elements for three dimensional elasticity, a problem which was open for over 40 years. 1 Trivariate splines Let us assume that Ω is a three dimensional domain with a triangulation 4, i.e. the union of nonoverlapping tetrahedra with the property that the intersection of any two tetrahedra is either empty, a common vertex, a common edge or a common face. A spline function of degree d and smoothness r over Ω is a r times differentiable func- tion which is a polynomial of degree d when restricted to each tetrahedron. Finite elements are examples of spline functions. Scattered data interpolation A typical problem in surface design is the following: Given a set of scattered points in IR3, which are assumed to be at the vertices of a triangulation 4, find a spline with appropriate smoothness which interpolates the given data at the vertices. The resolution of this problem is by means of the construction of locally supported spline functions with high smoothness. I have implemented C1 spline functions in [6] on a special triangulation.
    [Show full text]
  • NMD, National Security Issues Featured at 2001 April Meeting In
    April 2001 NEWS Volume 10, No. 4 A Publication of The American Physical Society http://www.aps.org/apsnews NMD, National Security Issues Featured Phase I CPU Report to be at 2001 April Meeting in Washington Discussed at Attendees of the 2001 APS April include a talk on how the news me- Meeting, which returns to Wash- dia cover science by David April Meeting ington, DC, this year, should arrive Kestenbaum, a self-described “es- The first phase of a new Na- just in time to catch the last of the caped physicist who is hiding out tional Research Council report of cherry blossom season in between at National Public Radio,” and a lec- the Committee on the Physics of scheduled sessions and special ture on entangled photons for the Universe (CPU) will be the events. The conference will run quantum information by the Uni- topic of discussion during a spe- April 28 through May 1, and will versity of Illinois’ Paul Kwiat. Other cial Sunday evening session at the feature the latest results in nuclear scheduled topics include imaging APS April Meeting in Washing- physics, astrophysics, chemical the cosmic background wave back- ton, DC. The session is intended physics, particles and fields, com- ground, searching for extra to begin the process of collect- putational physics, plasma physics, dimensions, CP violation in B me- ing input from the scientific the physics of beams, and physics sons, neutrino oscillations, and the community on some of the is- history, among other subdisci- amplification of atoms and light in The White House and (inset) some of its famous fictional sues outlined in the draft report, plines.
    [Show full text]
  • APS News, August-September 2019, Vol. 28, No. 8
    STEP UP Preparing for Careers Leroy Apker Back Page: Openness and 02│ for Change 03│ with PIPELINE 05│ Award Finalists 08│ Security in Research Aug./Sept. 2019 • Vol. 28, No. 8 aps.org/apsnews A PUBLICATION OF THE AMERICAN PHYSICAL SOCIETY HONORS JOURNALS 2020 APS Medal for Exceptional Achievement in Physical Review Research Research Awarded to Myriam P. Sarachik Publishes its First Papers BY DAVID VOSS o launch its inaugural issue, Physical Review Research has hysicist Myriam P. Sarachik electron systems. I am very pleased has been selected to receive that she will receive the APS Medal T published its first content the 2020 APS Medal for for Exceptional Achievement in less than two months since opening P for submissions in June. Exceptional Achievement in Research. I’m especially pleased Research for her “fundamental that this honor goes to someone Demonstrating the journal’s contributions to the physics of who has also been so active in broad, multidisciplinary scope electronic transport in solids and promoting the core values of APS. covering all of physics and related molecular magnetism.” Not only is Myriam a past President fields of interest to the physics An APS Fellow, Sarachik is of the Society; she is also well- community, the first release of Distinguished Professor of Physics known for her efforts to defend peer-reviewed research articles at City College of New York. She human rights and the principles of includes advances in the areas of was President of APS in 2003 and diversity and inclusion in physics.” materials science, quantum infor- received the APS Oliver E.
    [Show full text]
  • Physics Newsletter 2019
    Harvard University Department of Physics Newsletter FALL 2019 A Microscopic Look At Quantum Materials it takes many physicists to solve quantum many-body problems CONTENTS Letter from the Chair ............................................................................................................1 Letter from the Chair ON THE COVER: An experiment-theory collaboration PHYSICS DEPARTMENT HIGHLIGHTS at Harvard investigates possible Letters from our Readers.. ..................................................................................................2 Dear friends of Harvard Physics, While Prof. Prentiss has been in our department since 1991 (she was theories for how quantum spins (red the second female physicist to be awarded tenure at Harvard), our and blue spheres) in a periodic The sixth issue of our annual Faculty Promotion ............................................................................................................... 3 next article features a faculty member who joined our department potential landscape interact with one Physics Newsletter is here! In Memoriam ........................................................................................................................ 4 only two years ago, Professor Roxanne Guenette (pp. 22-26). another to give rise to intriguing and Please peruse it to find out about potentially useful emergent Current Progress in Mathematical Physics: the comings and goings in our On page 27, Clare Ploucha offers a brief introduction to the Harvard phenomena. This is an artist’s
    [Show full text]
  • The Titans of the Cosmos
    FALL 2018 Titans of the Cosmos Exploring the Mysteries of Neutron Star Mergers & Supermassive Black Holes 10 | Educating the next generation of innovators in science and industry 16 | Berkeley leads the way in data science education Research Highlights, Department News & More CONTENTS CHAIR’SLETTER RESEARCH HIGHLIGHTS2 Recent breakthroughs in faculty-led investigations PHOTO: BEN AILES PHOTO: TITANS OF THE COSMOS Fall classes are underway, our introductory courses ON THE COVER: Exploring the Mysteries of are packed, and we have good news on several fronts. Berkeley astrophysicist Daniel Kasen's research group uses Neutron Star Mergers and On July 1 we welcomed our newest faculty member, supercomputers at the National Supermassive Black Holes condensed matter theorist Mike Zalatel. In August the Energy Research Scientific Com- puting Center at LBNL to model 2018 Academic Rankings of World Universities were cosmic explosions. See page 4. announced, with Berkeley Physics second, between MIT CHAIR and Stanford – fine company. In September we learned Wick Haxton 4 that Professor Barbara Jacak will be awarded the 2019 MANAGING EDITOR & Tom Bonner Prize of the American Physical Society for DIRECTOR OF DEVELOPMENT her leadership of the PHENIX detector at Brookhaven’s Rachel Schafer Relativistic Heavy Ion Collider, and new graduate stu- CONTRIBUTING EDITOR & dent Nick Sherman will receive the LeRoy Apker Award SCIENCE WRITER for outstanding undergraduate research in theoretical Devi Mathieu PHYSICS INNOVATORS condensed matter and mathematical physics. Most re- DESIGN 10INITIATIVE cently, Assistant Professor Norman Yao has been named Sarah Wittmer Educating the Next a Packard Fellow, one of the most prestigious awards CONTRIBUTORS Generation of Innovators available in STEM disciplines.
    [Show full text]
  • Charles Winthrop Clark I Am a Theoretical Atomic and Molecular Physicist
    B168 Metrology Building National Institute of Standards and Technology 100 Bureau Drive, Stop 8420 Gaithersburg, MD 20899-8420 (301) 975-3709; FAX (301)926-3972 [email protected] updated: April 6, 2016 Charles Winthrop Clark I am a theoretical atomic and molecular physicist. My main research activities are in the areas of ultracold gases, quantum information and telecommunications, and atomic and molecular phenomena on surfaces, in condensed matter, and in nuclear reactions. Vital data Citizen of U.S.A. Born 9/30/1952, Minneapolis, Minnesota, eldest son of Robert Newhall Clark and Mary Quiatt Clark. Graduate of Seattle Public Schools. Married Deborah Jabon-Clark, 8/24/74. Work experience NIST Fellow 12/2010 – present Physical Measurement Laboratory National Institute of Standards and Technology Gaithersburg, MD 20899 Supervisors: Carl J. Williams (to 3/2016), Jon Pratt Fellow, Joint Quantum Institute 3/2007 - present Co-Director, Joint Quantum Institute 3/2011 – 3/2016 National Institute of Standards and Technology and the University of Maryland College Park, MD 20742 Chief, Electron and Optical Physics Division 8/1990 – 12/2010 Physics Laboratory / Physical Measurement Laboratory National Institute of Standards and Technology Gaithersburg, MD 20899 Supervisor: Katharine B. Gebbie Program Manager, Atomic and Molecular Physics 10/2003 – 12/2014 Electronics S&T Division, Code 312 Office of Naval Research 800 N. Quincy Street Arlington, VA 22217 (703)696-5267 Supervisors: Kristl Hathaway (to 6/2005), Preston Grounds (to 11/2010), Michael Pollock Acting Chief, Electron and Optical Physics Division 11/1989 - 8/1990 Center for Atomic, Molecular and Optical Physics National Institute of Standards and Technology Gaithersburg, MD 20899 (301) 975-3709 Supervisor: Katharine B.
    [Show full text]
  • Download Chapter 67KB
    Memorial Tributes: Volume 22 Copyright National Academy of Sciences. All rights reserved. Memorial Tributes: Volume 22 ROBERT N. HALL 1919–2016 Elected in 1977 “Contributions to alloyed junctions, p-i-n, tunnel and laser diodes, and ultra-purification of semiconductors.” BY GERALD D. MAHAN SUBMITTED BY THE NAE HOME SECRETARY ROBERT NOEL HALL, a pioneer in the early days of semi- conductor physics, spent almost his entire career at the re- search and development laboratory of the General Electric Co. in Schenectady, New York. He was the first scientist to propose the nonradiative recombination of electrons and holes, now called the Shockley-Hall-Read process, and he was the first to patent the two most important methods— alloying and diffusion—for making semiconductor diodes, which made GE an early leader in the manufacture of semi- conductor devices. He led a research team that invented the semiconductor injection laser, obtained the patent for it, and authored the first publication about it. He also devised the principal method for making very-high-purity silicon and germanium, and used these materials to create a device for measuring nuclear radiation. He died November 7, 2016, at age 96. Born December 25, 1919, to Harry and Clara Hall in New Haven, Bob attended the California Institute of Technology and graduated with a BS degree in physics in 1942. He returned to obtain his PhD in physics in 1948. Adapted with permission from Biographical Memoirs of the National Academy of Sciences, available online at www.nasonline.org/memoirs. 135 Copyright National Academy of Sciences. All rights reserved.
    [Show full text]
  • Frederick Seitz 1 9 1 1 – 2 0 0 8
    NATIONAL ACADEMY OF SCIENCES FREDERICK SEITZ 1 9 1 1 – 2 0 0 8 A Biographical Memoir by CHARLES P. SLICHTER Any opinions expressed in this memoir are those of the author and do not necessarily reflect the views of the National Academy of Sciences. Biographical Memoir COPYRIGHT 2010 NATIONAL ACADEMY OF SCIENCES WASHINGTON, D.C. Courtesy of the Rockefeller Archive Center. FREDERICK SEITZ July 4, 1911–March 2, 2008 BY CHARLES P . SLICHTER REDERICK SEITZ WAS A BRILLIANT SCIENTIST. He was one of the Ffounders of the field that became known as the physics of condensed matter; a wise and insightful leader of academic and scientific organizations; an influential spokesman for science nationally and internationally; a trusted counselor and adviser of many organizations. His contributions to the field of solid-state physics, to the National Academy of Sciences, and to The Rockefeller University were transforma- tive. Ever alert, he used his influence to help many scientists at crucial stages of their careers. He died in New York on March 2, 2008. I met Fred in 1949 when we both joined the faculty of the Department of Physics of the University of Illinois, he as research professor and I as a brand-new Ph.D. with the rank of instructor. Although he was only 8 years old, he was already a famous scientist. He had been elected a member of the American Philosophical Society in 1946, and he was elected a member of the National Academy of Sciences five years later. He was deeply and actively involved in solid-state physics.
    [Show full text]
  • Coming of Age As a Physicist in Postwar America by David Kaiser
    Francis E. Low: Coming of Age as a Physicist in Postwar America by David Kaiser oday, in the midst of discussions over particle accelerators that cost billions of dollars and journal-article author lists that run into the hundreds of names, it is easy to lose sight of just how recently the present scale and scope of physics took hold. During the first half of the twentieth century, physics had remained a backwater discipline within the United States, focused around handcrafted table-top experiments and budgets that only rarely surpassed the thousand-dollar mark. All of that changed, however— and changed dramatically— during World War II. Often dubbed “the physicists’war,” the global conflict shoved American physicists onto center stage. Harper’s magazine claimed soon after the war that “No dinner party is a success without at least one physicist”— a claim that can only be read with a wry smile today.1 My historical interests focus upon how the discipline of physics changed after the war—in its ideas, institutions, and interrelations with other activities. I want to understand what it was like to become a young physicist during MIT Visiting Professor Francis Low, in the classroom of 8.04 (Quantum Mechanics I), during the 1956-57 academic year. 24 ) low mit physics annual 2001 mit physics annual 2001 folio ( 25 this period of rapid transition, and how these changes helped to shape physics as we know it today. MIT Institute Professor Emeritus Francis E. Low, born in 1921, came of age as a physicist during these times of transformation.
    [Show full text]
  • Highlights Scientific Fraud-Lessons Learned APS Members Choose Cohen As New Vice President in 2002 Election Topical Conference E
    November 2002 NEWS Volume 11, No. 11 A Publication of The American Physical Society http://www.aps.org/apsnews APS Members Choose Cohen as New Newly Elected Vice President in 2002 Election APS Officials In the 2002 general election, Smoliar of Lightwave Electronics Cohen’s current and past APS members have chosen Marvin were elected as general councillors. research work covers a broad spec- Cohen, a professor at the Univer- Cohen professed himself trum of subjects in theoretical sity of California, Berkeley, and “delighted” to be elected as APS condensed matter physics. He is senior scientist at the Lawrence vice president. He was born in best known for his work with Berkeley National Laboratory, as Montreal and moved to San Fran- pseudopotentials with applications the next APS vice president in the cisco when he was 12 years old. to electronic, optical, and struc- GENERAL 2002 general election. He will He was an undergraduate at Ber- tural properties of materials, VICE PRESIDENT COUNCILLOR assume office on January 1, 2003, keley and completed his PhD at superconductivity, semiconductor Marvin Cohen becoming president elect in 2004 the University of Chicago in physics, and nanoscience. Cohen Janet Conrad and APS president in 2005. The 1964. After a one year is a past recipient of the APS Oliver APS president for 2003 will be postdoctoral position with the E. Buckley Prize and the APS Julius Myriam Sarachik (City College of Theory Group at Bell Laborato- Edgar Lilienfeld Prize. In 2002 New York). ries, he joined the Berkeley Cohen received the National Medal In other election results, John physics faculty.
    [Show full text]
  • Nicholas Rivera
    Nicholas Rivera Contact [email protected] Information Education Massachusetts Institute of Technology, Cambridge, MA PhD Candidate in Physics 2016-present • Doctoral Supervisor: Prof. Marin Soljaˇci´c • MIT School of Science Fellow 2020-2021 • DOE Computational Science Graduate Fellow 2016-2020 Bachelor of Science in Physics June 2016 Accepted 22. Goncalves, PAD., Christensen T., Rivera, N., Jauho A. P., Mortensen N. A., and Soljaˇci´c. Publications M. \Plasmon-Emitter Interactions at the nanoscale." Nature Communications (2020). (* denotes equal 21. Sloan, J.*, Rivera, N.*, Joannopoulos J.D., Kaminer I., and Soljaˇci´cM. \Controlling spins contribution) with surface magnon polaritons." Physical Review B (2019). 20. Rivera N., Wong L. J., Joannopoulos J.D., Soljaˇci´c,M., and Kaminer, I. \Light emission based on nanophotonic vacuum forces". Nature Physics (2019). 19. Dangovski R.,, Rivera, N., Soljaˇci´c, M., and Kaminer, I.\Shaping long-lived electron wavepackets for customizable optical spectra." Optica (2019). 18. Dai, S., Stehle Y., Rivera, N., Fang, W., Tay. R., Ciccarino C., Ma, Q., Rodan-Legrain, D., Jarillo-Herrero, P., Fogler, M., Teo, EHT., Kong, J., Narang. P., and Basov, DN. \Phonon polaritons in hexagonal boron nitride at the atomic-scale limit." Advanced Materials (2019). 17. Rivera N., Flick J., and Narang P. \Variational theory of non-relativistic quantum electrodynamics." Physical Review Letters (2019). 16. Rivera N., Christensen T., and Narang P. \Phonon polaritonics in two-dimensional materials'. Nano Letters (2019). 15. Rivera N., Wong L. J., Soljaˇci´c,M., and Kaminer, I. \Ultrafast multiharmonic plasmon generation by optically dressed electrons'. Physical Review Letters (2019). 14. Roques-Carmes, C., Rivera, N., Joannopoulos J.D., Soljaˇci´c,M., and Kaminer, I.
    [Show full text]
  • Memor1am• Caltech Quadruples Internet Speed
    u. en 1- 1- u. en 1- The campus community biweekly December 9, 2004, vol. 4, no. 18 In memor1am• Caltech quadruples Internet speed For the second consecutive year, the High Energy Physics Team, a group of physi­ cists, computer scientists, and network engineers, has won the Supercomputing Bandwidth Challenge with a sustained data transfer of 101 gigabits per second (Gbps) between Pittsburgh and Los An­ geles. This is more than four times faster than last year's record of 23.2 gigabits per second, which was set by the same team. The team hopes this new demon­ Palomar laser stration will encourage scientists and engineers in many sectors of society to points to future develop and deploy a new generation of revolutionary Internet applications. The Palomar Observatory's 200-inch The international team is led by Hale Telescope has been gathering light Caltech and includes partners from in­ from the depths of the universe for 55 stitutions throughout the world. The years. Now, it's beginning to send some group's "High-Speed TeraByte Transfers back with the help of Caltech, JPL, and for Physics" record data transfer speed University of Chicago astronomers, who is equivalent to downloading three full have created an artificial star by aiming a DVD movies per second, or tryansmitting 4-watt laser beam froll] t!:'_e telescope into all of the contents of the Library of Con­ the night sky. gress in 15 minutes, and it corresponds The beam is the first step in a program to approximately 5 percent of the rate at to expand the area of sky observed with which all forms of digital content were adaptive optics-a technique that allows produced on Earth during the test.
    [Show full text]