Highlights Se- Mathematics and Engineering— the Lead Signers of the Letter Exhibit
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April Meeting Goes Mile-High in 2004 Highlights New Techniques For
January 2004 Volume 13, No. 1 NEWS http://www.physics2005.org A Publication of The American Physical Society http://www.aps.org/apsnews April Meeting Goes Junior Members Respond to Mile-High in 2004 APS Ethics Survey By Ernie Tretkoff The “Mile High” city of Denver, International Affairs, Colorado, will host as many as History of Physics, and Few physicists received for- to include not just research mis- 1500 physicists at the 2004 APS Graduate Student Af- mal ethics training as part of their conduct such as data fabrication, April meeting, to be held May 1-4 fairs; and the Topical education, though many are con- falsification, and plagiarism, but 2004. Groups on Few-Body cerned about professional ethics, also issues such as authorship, Attendees will be drawn from a Systems, Precision a study by the APS Ethics Task proper credit of previous work, wide range of research areas. APS Measurement and Force has found. and data handling and reporting. units represented at the meeting Fundamental Con- Photo Credit: The Denver Metro Convention and Visitors Bureau The task force report was sub- “This was an interesting and include the Divisions of Astrophys- stants, Gravitation, Denver has the 10th largest downtown in America. mitted to and accepted by the sobering project,” said task force ics, Nuclear Physics, Particles and Plasma Astrophysics, APS Council at its meeting in chair Frances Houle of the IBM Fields, Plasma Physics, and Com- and Hadronic Physics. approximately 45 invited sessions. November. Almaden Research Center in San putational Physics; the Forums on The scientific program will fea- There will also be numerous con- The task force, which was con- Jose. -
Professor Helen Quinn
Professor Helen Quinn Helen Quinn was born in Australia and grew up in the Melbourne suburbs of Blackburn and Mitcham. She attended Tintern Girls Grammar School in Ringwood East. She matriculated successfully and obtained a cadetship from the Australian Department of Meteorology to fund her studies at the University of Melbourne. After beginning her undergraduate studies at the University, her family migrated to San Francisco in the early 1960s. Professor Quinn finished her undergraduate, and eventually graduate education at Stanford University. After receiving her doctorate from Stanford in 1967, she held a postdoctoral position at Deutsches Elektronen Synchrotron in Hamburg, Germany, then served as a research fellow at Harvard in 1971, joining the faculty there in 1972. She returned to Stanford in 1976 as a visitor on a Sloan Fellowship and joined the staff at the Stanford Linear Accelerator Centre (SLAC) in 1977. In her current position as a theoretical physicist at the Stanford Linear Accelerator Center (SLAC), Professor Quinn has made important contributions towards unifying the strong, weak and electromagnetic interactions into a single coherent model of particle physics. In 2000 she was awarded the Dirac Medal and Prize for pioneering contributions to the quest for a unified theory of quarks and leptons and of the strong, weak, and electromagnetic interactions. The award, shared with Professors Howard Georgi of Harvard and Jogesh Pati of the University of Maryland, recognized Professor Quinn for her work on the unification of the three interactions, and for fundamental insights about charge-parity conservation. She has also recently developed basic analysis methods used to search for the origin of particle-antiparticle asymmetry in nature. -
Berni Julian Alder, Theoretical Physicist and Inventor of Molecular Dynamics, 1925–2020 Downloaded by Guest on September 24, 2021 9 E
RETROSPECTIVE BerniJulianAlder,theoreticalphysicistandinventor of molecular dynamics, 1925–2020 RETROSPECTIVE David M. Ceperleya and Stephen B. Libbyb,1 Berni Julian Alder, one of the leading figures in the invention of molecular dynamics simulations used for a wide array of problems in physics and chemistry, died on September 7, 2020. His career, spanning more than 65 years, transformed statistical mechanics, many body physics, the study of chemistry, and the microscopic dynamics of fluids, by making atomistic computational simulation (in parallel with traditional theory and exper- iment) a new pathway to unexpected discoveries. Among his many honors, the CECAM prize, recognizing exceptional contributions to the simulation of the mi- croscopic properties of matter, is named for him. He was awarded the National Medal of Science by President Berni Julian Alder in 2015. Image credit: Lawrence Obama in 2008. Livermore National Laboratory. Alder was born to Ludwig Adler and Otillie n ´ee Gottschalk in Duisburg, Germany on September 9, sampling algorithm that was to revolutionize statistical 1925. Alder’s father Ludwig was a chemist who worked physics (1). Teller recruited Alder to the just-founded in the German aluminum industry. When the Nazis Lawrence Radiation Laboratory (later, the Lawrence Liv- came to power in 1933, Alder, his parents, elder ermore National Laboratory), where he, along with brother Henry, and twin brother Charles fled to Zurich, other young talented scientists, built a unique “can Switzerland. In 1941, they further emigrated to the do” scientific culture that thrives to this day. United States (becoming “Alders” in the process), Beginning in the mid-1950s, Alder, who possessed where they settled in Berkeley, California. -
2005 Annual Report American Physical Society
1 2005 Annual Report American Physical Society APS 20052 APS OFFICERS 2006 APS OFFICERS PRESIDENT: PRESIDENT: Marvin L. Cohen John J. Hopfield University of California, Berkeley Princeton University PRESIDENT ELECT: PRESIDENT ELECT: John N. Bahcall Leo P. Kadanoff Institue for Advanced Study, Princeton University of Chicago VICE PRESIDENT: VICE PRESIDENT: John J. Hopfield Arthur Bienenstock Princeton University Stanford University PAST PRESIDENT: PAST PRESIDENT: Helen R. Quinn Marvin L. Cohen Stanford University, (SLAC) University of California, Berkeley EXECUTIVE OFFICER: EXECUTIVE OFFICER: Judy R. Franz Judy R. Franz University of Alabama, Huntsville University of Alabama, Huntsville TREASURER: TREASURER: Thomas McIlrath Thomas McIlrath University of Maryland (Emeritus) University of Maryland (Emeritus) EDITOR-IN-CHIEF: EDITOR-IN-CHIEF: Martin Blume Martin Blume Brookhaven National Laboratory (Emeritus) Brookhaven National Laboratory (Emeritus) PHOTO CREDITS: Cover (l-r): 1Diffraction patterns of a GaN quantum dot particle—UCLA; Spring-8/Riken, Japan; Stanford Synchrotron Radiation Lab, SLAC & UC Davis, Phys. Rev. Lett. 95 085503 (2005) 2TESLA 9-cell 1.3 GHz SRF cavities from ACCEL Corp. in Germany for ILC. (Courtesy Fermilab Visual Media Service 3G0 detector studying strange quarks in the proton—Jefferson Lab 4Sections of a resistive magnet (Florida-Bitter magnet) from NHMFL at Talahassee LETTER FROM THE PRESIDENT APS IN 2005 3 2005 was a very special year for the physics community and the American Physical Society. Declared the World Year of Physics by the United Nations, the year provided a unique opportunity for the international physics community to reach out to the general public while celebrating the centennial of Einstein’s “miraculous year.” The year started with an international Launching Conference in Paris, France that brought together more than 500 students from around the world to interact with leading physicists. -
SPRING 1991 in This Newsletter You Will Find: 1. Announcement and 2Nd
NEWSLETTER - SPRING 1991 In this Newsletter you will find: 1. Announcement and 2nd Call for Papers for Physics Computing ’91 2. Announcement of the 14th International Conference on the Numerical Simulation of Plasmas 3. Announcement of the 4th International Conference on Computational Physics in Prague 4. In Memory of Sid Fernbach 5. Transition to Divisional Status Expected 6. Fellowship Nomination Process 7. Message from Chair 8. Other News Items 9. Roster of Executive Committee 10. Voting Instructions and Election Information PHYSICS COMPUTING ’91 including The 3rd International Conference on Computational Physics Announcement and Second Call for Papers The Topical Group on Computational Physics has combined forces with the editors of the AIP journal Computers in Physics to bring you a full week on the many aspects of the use of computers in physics including the traditional topics of computational physics. The meeting will convene on 10 June 1991 in the San Jose Convention Center and run through 14 June 1991. San Jose is located some 40 miles southeast of San Francisco at the south end of the San Francisco Bay, and is in the heart of “Silicon” Valley. The universities, national laboratories, and the large assortment of computer hardware and software companies in the region make San Jose an ideal venue for this meeting. The meeting program consists of plenary, oral, poster, and tutorial sessions, with many invited papers being given in the oral sessions. We are fortunate to have D. Allan Bromley, Assistant to the President for Science and Technology, to give our Keynote Address. Our meeting format consists of several 90-minute sessions arranged such that the plenary sessions do not run in parallel with other sessions and with 3-hour poster sessions held in the exhibit hall. -
Long Term Planning Theme at Annual Users' Meeting
dn p Events and Happenings Ah Ah~~ in thp SI AC Communitv I Long Term Planning Theme at Annual Users' Meeting "WHAT ARE THE DRIVING questions in high-energy physics for the next 25 years? What are the tools that will answer those questions?" These and other questions were posed by Peter Rosen, Associate Director in the DOE's Office of Science, during the annual SLUO Meeting in July. Over 200 users came to SLAC from around the world for a discussion about the science and politics of high energy physics (HEP). Speaking at the meeting, SLAC Director Jonathan Dorfan and Fermilab Director Michael Witherell expressed similar sentiments. Dorfan suggested that a different planning model is needed for the new challenges facing big science. "Previously we looked at a next generation machine and we endorsed that one s facility. It would be much better for the field if we which is intended to provide an update to the HEPAP looked 20-30 years ahead and developed a roadmap for subpanel. SLUO Chairman Ray Frey showed the future based on physics themes, not an emphasis transparenciesfrom Fermilab's Chris Quigg, who was on a machine," said Dorfan. He added that such a unable to attend the meeting. roadmap must be "world-based" since HEP is a global According to Dorfan, the near future will see data enterprise. "Scarce resources of money and people from several machines that will test the veracity of the necessitate a more international collaboration. We Standard Model, but he believes we have to be able to cannot risk regionalism." use those machines to a greater advantage. -
Rejoice in Slac's Nobel Prize
I4* 0S r^ * *|_ SEvents and Happenings e^I n ter~actir~o^n Poin t in the SLAC Community 1-=I§~~lJ ; I I. U |l IU IINovember 1990, Vol. ,1, No. 7 _ Friedman,Kendall, Taylor, and Us, Too ALL REJOICE IN SLAC'S NOBEL PRIZE by Bill Kirk THE NEWS RELEASE from Stockholm started this way: The Royal Swedish Academy of Sciences has decided to award the 1990 Nobel Prize in Physics jointly to Professors Jerome I. Friedman and Henry W. Kendall, both of the Massachusetts Institute of Technology, Cambridge, MA, USA, and RichardE. Taylor of Stanford University, Stanford, CA, USA, for their pioneering investigations concerning deep inelastic scattering of electrons on protons and bound neutrons, which have been of essential importance for the development of the quark model in particle physics. The news release then went on to describe the significance of this SLAC- MIT experiment, tracing the series of discoveries in this century that have disclosed ever-smaller layers in the structure of matter: atom, nucleus, proton, quark.... It was interesting to read about the earlier work of such (cont'd. on pg. 2) 1 1970 SLAC Employees (cont'd. from pg. 1) renowned physicists as Ruther- I tHere in 1990 ford, Heisenberg, Chadwick Hofstadter and Gell-Mann. These Louise Addis John Cockroft and others are the people who James Alexander Fred Coffer Matthew Allen Gerarda Collet paved the way for the SLAC-MIT Richard Allen Harry Collins group to know what experiments Eugenio Alvarado Carol Colon Sal Alvarado Steven Combs to do and even, to some extent, Roger Anderson Nada Comstock how to do them. -
Lab Partners: NSF and DOE
Volume 19 FRIDAY, APRIL 5, 1996 Number 7 Lab Partners: NSF and DOE by Leila Belkora, Office of Public Affairs experiments have had co-spokesmen from NSF- funded university groups. n a spring day in Chicago, if you long for NSF also funds fixed-target experiments and Othe crack of the bat and the scent of mustard special projects at Fermilab. The agency supports on hotdogs, head to Wrigley Field. In the seventh groups at KTeV and NuTeV, where experi- inning stretch you’ll sing a chorus of “Take Me menters hope to shed light on CP violation and Out to the Ball Game,” along with announcer neutrino-nucleon scattering, respectively. Two Harry Caray; baseball at Wrigley just wouldn’t be experiments related to charm quarks, E831 and the same without it. After the game, should you E835, are supported in part by NSF. This year, travel about 40 miles west to Fermilab, approximately 70 graduate students are receiv- you’d find another essential pair- ing their training in NSF-funded ing: Fermilab depends on research groups both at collider funding from the Depart- and fixed-target experi- ment of Energy, but ments. On a smaller scale, high-energy physics NSF grants to Fermilab here would be incom- augment research in plete without the cosmology and facili- support of the tate international National Science collaborations in Foundation, as well. particle physics with I nside NSF’s largest India and Korea. f contribution at In dollars, Fermilab is to the col- NSF’s contribution lider program. At to the national high- Wonyong Lee DZero, seven NSF-sup- energy physics program Profile ported groups built the is about 10 percent that 2 central drift chamber, the of DOE. -
Berni Alder (1925–2020)
Obituary Berni Alder (1925–2020) Theoretical physicist who pioneered the computer modelling of matter. erni Alder pioneered computer sim- undergo a transition from liquid to solid. Since LLNL ulation, in particular of the dynamics hard spheres do not have attractive interac- of atoms and molecules in condensed tions, freezing maximizes their entropy rather matter. To answer fundamental ques- than minimizing their energy; the regular tions, he encouraged the view that arrangement of spheres in a crystal allows more Bcomputer simulation was a new way of doing space for them to move than does a liquid. science, one that could connect theory with A second advance concerned how non- experiment. Alder’s vision transformed the equilibrium fluids approach equilibrium: field of statistical mechanics and many other Albert Einstein, for example, assumed that areas of applied science. fluctuations in their properties would quickly Alder, who died on 7 September aged 95, decay. In 1970, Alder and Wainwright dis- was born in Duisburg, Germany. In 1933, as covered that this intuitive assumption was the Nazis came to power, his family moved to incorrect. If a sphere is given an initial push, Zurich, Switzerland, and in 1941 to the United its average velocity is found to decay much States. After wartime service in the US Navy, more slowly. This caused a re-examination of Alder obtained undergraduate and master’s the microscopic basis for hydrodynamics. degrees in chemistry from the University of Alder extended the reach of simulation. California, Berkeley. While working for a PhD In molecular dynamics, the forces between at the California Institute of Technology in molecules arise from the electronic density; Pasadena, under the physical chemist John these forces can be described only by quan- Kirkwood, he began to use mechanical com- tum mechanics. -
Snowmass01 Masterreg DB 16May.FP5
SNOWMASS 2001 Summary: Working Groups Name Nametag Institution EMail M1 M2 M3 M4 M5 M6 T1 T2 T3 T4 T5 T6 T7 T8 T9 E1 E2 E3 E4 E5 E6 E7 P1 P2 P3 P4 P5 ,1 Abe Toshinori Stanford Linear Accelerator Center [email protected] 1 ,2 Adams Todd Florida State University [email protected] 11 1 ,3 Adolphsen Chris Stanford Linear Accelerator Center [email protected] 11 ,4 Akerib Dan Case Western Reserve University [email protected] 11 ,5 Albright Carl H. Northern Illinois University [email protected] 11 ,6 Albrow Michael Fermi National Accelerator Laboratory [email protected] 11 11 ,7 Allen Matthew Stanford Linear Accelerator Center [email protected] 1 ,8 Appel Jeffrey Fermi National Accelerator Laboratory [email protected] 11 1 1 111 ,9 Artuso Marina Syracuse University [email protected] 1 ,10 Asiri Fred Stanford University [email protected] 1 ,11 Asztalos Steve Massachusetts Institute of Technology [email protected] 11 1 ,12 Atwood David Iowa State University [email protected] 11 13, Augustin Jean-Eude LPNHE Paris [email protected] 11 1 1 1 ,14 Avery Paul University of Florida [email protected] 11 1 1 ,15 Babukhadia Levan State University of New York, Stony [email protected] 1 1 111 ,16 Bachacou Henri Lawrence Berkeley National Laboratory [email protected] 111 1 ,17 Baer Howard Florida State University [email protected] 11 1 11 ,18 Baker Winslow Fermi National Accelerator Laboratory [email protected] 11 ,19 Balazs Csaba University of Hawaii [email protected] 111 ,20 Barber Desmond DESY, Hamburg [email protected] -
IOP, Quarks Leptons and the Big Bang (2002) 2Ed Een
Quarks, Leptons and the Big Bang Second Edition Quarks, Leptons and the Big Bang Second Edition Jonathan Allday The King’s School, Canterbury Institute of Physics Publishing Bristol and Philadelphia c IOP Publishing Ltd 2002 All rights reserved. No part of this publication may be reproduced, stored in a retrieval system or transmitted in any form or by any means, electronic, mechanical, photocopying, recording or otherwise, without the prior permission of the publisher. Multiple copying is permitted in accordance with the terms of licences issued by the Copyright Licensing Agency under the terms of its agreement with the Committee of Vice- Chancellors and Principals. British Library Cataloguing-in-Publication Data A catalogue record for this book is available from the British Library. ISBN 0 7503 0806 0 Library of Congress Cataloging-in-Publication Data are available First edition printed 1998 First edition reprinted with minor corrections 1999 Commissioning Editor: James Revill Production Editor: Simon Laurenson Production Control: Sarah Plenty Cover Design: Fr´ed´erique Swist Marketing Executive: Laura Serratrice Published by Institute of Physics Publishing, wholly owned by The Institute of Physics, London Institute of Physics Publishing, Dirac House, Temple Back, Bristol BS1 6BE, UK US Office: Institute of Physics Publishing, The Public Ledger Building, Suite 1035, 150 South Independence Mall West, Philadelphia, PA 19106, USA Typeset in LATEX2ε by Text 2 Text, Torquay, Devon Printed in the UK by MPG Books Ltd, Bodmin, Cornwall Contents -
Glossary of Terms Absorption Line a Dark Line at a Particular Wavelength Superimposed Upon a Bright, Continuous Spectrum
Glossary of terms absorption line A dark line at a particular wavelength superimposed upon a bright, continuous spectrum. Such a spectral line can be formed when electromag- netic radiation, while travelling on its way to an observer, meets a substance; if that substance can absorb energy at that particular wavelength then the observer sees an absorption line. Compare with emission line. accretion disk A disk of gas or dust orbiting a massive object such as a star, a stellar-mass black hole or an active galactic nucleus. An accretion disk plays an important role in the formation of a planetary system around a young star. An accretion disk around a supermassive black hole is thought to be the key mecha- nism powering an active galactic nucleus. active galactic nucleus (agn) A compact region at the center of a galaxy that emits vast amounts of electromagnetic radiation and fast-moving jets of particles; an agn can outshine the rest of the galaxy despite being hardly larger in volume than the Solar System. Various classes of agn exist, including quasars and Seyfert galaxies, but in each case the energy is believed to be generated as matter accretes onto a supermassive black hole. adaptive optics A technique used by large ground-based optical telescopes to remove the blurring affects caused by Earth’s atmosphere. Light from a guide star is used as a calibration source; a complicated system of software and hardware then deforms a small mirror to correct for atmospheric distortions. The mirror shape changes more quickly than the atmosphere itself fluctuates.