Annual Report 2016
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Arxiv:2004.05668V2 [Hep-Th] 9 Jun 2020
A note on electric-magnetic duality and soft charges Marc Henneaux,a;b;1 Cédric Troessaertc aUniversité Libre de Bruxelles and International Solvay Institutes, Physique Mathématique des Interactions Fondamentales, Campus Plaine—CP 231, Bruxelles B-1050, Belgium bCollège de France, 11 place Marcelin Berthelot, 75005 Paris, France cHaute-Ecole Robert Schuman, Rue Fontaine aux Mûres, 13b, B-6800, Belgium E-mail: [email protected], [email protected] Abstract: We derive the asymptotic symmetries of the manifestly duality invariant for- mulation of electromagnetism in Minkoswki space. We show that the action is invariant under two algebras of angle-dependent u(1) transformations, one electric and the other magnetic. As in the standard electric formulation, Lorentz invariance requires the addition of additional boundary degrees of freedom at infinity, found here to be of both electric and magnetic types. A notable feature of this duality symmetric formulation, which we comment upon, is that the on-shell values of the zero modes of the gauge generators are equal to only half of the electric and magnetic fluxes (the other half is brought in by Dirac- string type contributions). Another notable feature is the absence of central extension in the angle-dependent u(1)2-algebra. arXiv:2004.05668v2 [hep-th] 9 Jun 2020 1ORCID: 0000-0002-3558-9025 Contents 1 Introduction 1 2 Starting point 3 2.1 Action and presymplectic form 3 2.2 Hamiltonian vector fields 4 2.3 Boundary conditions 4 2.4 Improper gauge symmetries 5 2.5 Equations of motion 7 3 Poincaré -
Horizon Europe - EU Multiannual Financial Framework
30 November 2018 Dear Prime Minister / Chancellor / Taoiseach / President, Horizon Europe - EU Multiannual Financial Framework (a letter to Heads of State or Government, signed by Nobel Prize and other international award winners and CEOs and Chairmen of leading European companies) At the European Council meeting in December, European leaders will discuss the 2021-2027 EU Multiannual Financial Framework, including the budget to be assigned to Research and Innovation, mainly through the next framework programme Horizon Europe. On this occasion, we want to remind them of the economic impact and the tangible improvements to European citizens' lives that have been generated over the years by the EU framework programmes for Research and Innovation. We urge Europe’s Heads of State or Government to support or even to increase the investment in Horizon Europe. €120 billion was seen as the absolute minimum to make Europe a global frontrunner by the High Level Group set by the European Commission and chaired by Pascal Lamy. Indeed, EU-funded research had a decisive impact and positively contributed to various areas, such as avoiding unnecessary chemotherapy for breast cancer patients; opening the way to batteries and solar cells of the next generation; reducing aircraft emissions and noise; enhancing cybersecurity; qualifying the future impact of artificial intelligence on jobs; etc. European industry underlines that the EU framework programmes help companies to build up know-how, have access to the “state-of-the-art”, achieve synergies and critical mass, access highly skilled and talented people, and network with customers and suppliers. EU-funded research has made an immense contribution to creating and disseminating scientific knowledge indispensable for innovation to flourish. -
Design, Synthesis, Photochemical and Biological Evaluation of Novel Photoactive Molecular Switches
TESIS DOCTORAL Título Design, Synthesis, Photochemical and Biological Evaluation of Novel Photoactive Molecular Switches Autor/es David Martínez López Director/es Diego Sampedro Ruiz y Pedro José Campos García Facultad Facultad de Ciencia y Tecnología Titulación Departamento Química Curso Académico Design, Synthesis, Photochemical and Biological Evaluation of Novel Photoactive Molecular Switches, tesis doctoral de David Martínez López, dirigida por Diego Sampedro Ruiz y Pedro José Campos García (publicada por la Universidad de La Rioja), se difunde bajo una Licencia Creative Commons Reconocimiento-NoComercial- SinObraDerivada 3.0 Unported. ̉ Permisos que vayan más allá de lo cubierto por esta licencia pueden solicitarse a los titulares del copyright. © El autor © Universidad de La Rioja, Servicio de Publicaciones, 2019 publicaciones.unirioja.es E-mail: [email protected] Facultad de Ciencia y Tecnología Departamento de Química Área de Química Orgánica Grupo de Fotoquímica Orgánica TESIS DOCTORAL DESIGN, SYNTHESIS, PHOTOCHEMICAL AND BIOLOGICAL EVALUATION OF NOVEL PHOTOACTIVE MOLECULAR SWITCHES Memoria presentada en la Universidad de La Rioja para optar al grado de Doctor en Química por: David Martínez López Junio 2019 Facultad de Ciencia y Tecnología Departamento de Química Área de Química Orgánica Grupo de Fotoquímica Orgánica D. DIEGO SAMPEDRO RUIZ, Profesor Titular de Química Orgánica del Departamento de Química de la Universidad de La Rioja, y D. PEDRO JOSÉ CAMPOS GARCÍA, Catedrático de Química Orgánica del Departamento de Química de la Universidad de La Rioja. CERTIFICAN: Que la presente memoria, titulada “Design, synthesis, photochemical and biological evaluation of novel photoactive molecular switches”, ha sido realizada en el Departamento de Química de La Universidad de La Rioja bajo su dirección por el Licenciado en Química D. -
Asymptotic Structure of Electromagnetism and Gravity in The
Asymptotic structure of elec- tromagnetism and gravity in the asymptotically flat case Marc Henneaux Introduction Asymptotic structure of electromagnetism and The problem in a nutshell - Electromagnetism gravity in the asymptotically flat case New boundary conditions Gravity Conclusions and Marc Henneaux comments Geometry and Duality Workshop, AEI, Potsdam - 6 December 2019 1 / 33 Asymptotic symmetries play a central role in holographic duality. This is familiar from the AdS/CFT context, where the asymptotic symmetry group (which is infinite-dimensional in the case of AdS3 gravity) is the group of rigid symmetries of the dual boundary theory. What is the situation in the asymptotically flat context ? This will be the subject of this talk. Introduction Asymptotic structure of elec- tromagnetism and gravity in the asymptotically flat case Marc Henneaux Introduction The problem in a nutshell - Electromagnetism New boundary conditions Gravity Conclusions and comments 2 / 33 This is familiar from the AdS/CFT context, where the asymptotic symmetry group (which is infinite-dimensional in the case of AdS3 gravity) is the group of rigid symmetries of the dual boundary theory. What is the situation in the asymptotically flat context ? This will be the subject of this talk. Introduction Asymptotic structure of elec- tromagnetism and gravity in the asymptotically flat case Marc Henneaux Introduction Asymptotic symmetries play a central role in holographic duality. The problem in a nutshell - Electromagnetism New boundary conditions Gravity Conclusions and comments 2 / 33 What is the situation in the asymptotically flat context ? This will be the subject of this talk. Introduction Asymptotic structure of elec- tromagnetism and gravity in the asymptotically flat case Marc Henneaux Introduction Asymptotic symmetries play a central role in holographic duality. -
Solvay Process Company and a Portion of the Village of Solvay Which Grew up Company to Use Their Process
:«:..' :•' Telephone 2-3111 Telephone 2-3111 SYRACUSE JOTJRNAIi Saturday, July 28, 193C Page 8 - SOLVAY PROCESS AMONG STATE'S MIGHTIEST PLANTS MUM) NIK BURNS BRIGHTLY AIRVIEW OF THE SOLVAY PROCESS PLANT WHICH GREW FROM WILLIAM COGSWELL'S IDEA N HISTORY OF VAST IRKS j (This is the fifth of a series of articles whhb willjg <«.»r weklv in the Saturday edition of The Syracuse • ^ourZ^topermitSyracusaJto become iamiliar with the journal, to P"™;*' industrial and commercial enter- inside story of the great industrial a™ * develoo- \ prises which have played important parts in the develop lent of the city.) _ By BICHAKD B. WELCH. Bountiful Nature which supplied Syracuse with huge qnan- Itie* of salt and limestone coupled with the lewdness 0£ a Central New Yorker who saw the l-kto»tta.-* •btainahle raw materials gave Syracuse the.S*j'««- r^™*™™ ATIP of the largest heavy industries in the state. C°T^»M£nk of the history of the Solvay Process r™J»,»T« * subsidiary of the Allied Chemical and Dye Corp- STCE* tSTo William Browne Cog^eUmw, brain tie idea' of utilizing the resources of this section first KenXhdcredit for the formation and progress' »* tfe ^|My industry must also go to Bow and1 Hazard first P^nt tfthe company, and his son, Frederick B. Hazard, who succeeded him. SH; names which burn brightly in the industrial history 01 SMrCCog^ell was born in Oswego, Sept 22,1834 of a lixie- ,ge which dated back to Sir John Cogswell in If5- He was educated in Hamilton Academy at Oneida and in private schools of Syracuse. -
Hypersymmetric Black Holes in 2+1 Gravity
Hypersymmetric black holes in 2+1 gravity Marc Henneaux Introduction Three- dimensional pure gravity with ¤ 0 Ç Hypergravity Hypersymmetric black holes in 2+1 gravity Charges and asymptotic analysis Hypersymmetry Marc Henneaux bounds Black holes Conclusions ETH, November 2015 1 / 28 Supersymmetry is well known to have deep consequences. In the context of higher spin gauge theories, supersymmetry is generalized to include fermionic symmetries described by parameters of spin 3/2, 5/2 etc Do these symmetries also have interesting implications ? In particular, do they imply “hypersymmetry" bounds ? The answer turns out to be affirmative, as can be seen for instance by analysing anti-de Sitter hypergravity in 2 1 Å dimensions. Based on joint work with A. Pérez, D. Tempo, R. Troncoso (2015) Introduction Hypersymmetric black holes in 2+1 gravity Marc Henneaux Introduction Three- dimensional pure gravity with ¤ 0 Ç Hypergravity Charges and asymptotic analysis Hypersymmetry bounds Black holes Conclusions 2 / 28 In the context of higher spin gauge theories, supersymmetry is generalized to include fermionic symmetries described by parameters of spin 3/2, 5/2 etc Do these symmetries also have interesting implications ? In particular, do they imply “hypersymmetry" bounds ? The answer turns out to be affirmative, as can be seen for instance by analysing anti-de Sitter hypergravity in 2 1 Å dimensions. Based on joint work with A. Pérez, D. Tempo, R. Troncoso (2015) Introduction Hypersymmetric black holes in 2+1 gravity Marc Henneaux Introduction Supersymmetry is well known to have deep consequences. Three- dimensional pure gravity with ¤ 0 Ç Hypergravity Charges and asymptotic analysis Hypersymmetry bounds Black holes Conclusions 2 / 28 Do these symmetries also have interesting implications ? In particular, do they imply “hypersymmetry" bounds ? The answer turns out to be affirmative, as can be seen for instance by analysing anti-de Sitter hypergravity in 2 1 Å dimensions. -
The Grand Challenges in the Chemical Sciences
The Israel Academy of Sciences and Humanities Celebrating the 70 th birthday of the State of Israel conference on THE GRAND CHALLENGES IN THE CHEMICAL SCIENCES Jerusalem, June 3-7 2018 Biographies and Abstracts The Israel Academy of Sciences and Humanities Celebrating the 70 th birthday of the State of Israel conference on THE GRAND CHALLENGES IN THE CHEMICAL SCIENCES Participants: Jacob Klein Dan Shechtman Dorit Aharonov Roger Kornberg Yaron Silberberg Takuzo Aida Ferenc Krausz Gabor A. Somorjai Yitzhak Apeloig Leeor Kronik Amiel Sternberg Frances Arnold Richard A. Lerner Sir Fraser Stoddart Ruth Arnon Raphael D. Levine Albert Stolow Avinoam Ben-Shaul Rudolph A. Marcus Zehev Tadmor Paul Brumer Todd Martínez Reshef Tenne Wah Chiu Raphael Mechoulam Mark H. Thiemens Nili Cohen David Milstein Naftali Tishby Nir Davidson Shaul Mukamel Knut Wolf Urban Ronnie Ellenblum Edvardas Narevicius Arieh Warshel Greg Engel Nathan Nelson Ira A. Weinstock Makoto Fujita Hagai Netzer Paul Weiss Oleg Gang Abraham Nitzan Shimon Weiss Leticia González Geraldine L. Richmond George M. Whitesides Hardy Gross William Schopf Itamar Willner David Harel Helmut Schwarz Xiaoliang Sunney Xie Jim Heath Mordechai (Moti) Segev Omar M. Yaghi Joshua Jortner Michael Sela Ada Yonath Biographies and Abstracts (Arranged in alphabetic order) The Grand Challenges in the Chemical Sciences Dorit Aharonov The Hebrew University of Jerusalem Quantum Physics through the Computational Lens While the jury is still out as to when and where the impressive experimental progress on quantum gates and qubits will indeed lead one day to a full scale quantum computing machine, a new and not-less exciting development had been taking place over the past decade. -
Chemistry at the Centre
CHEMISTRY AT THE CENTRE: AN INTERNATIONAL ASSESSMENT OF UNIVERSITY RESEARCH IN CHEMISTRY IN THE UK 1 CONTENTS FOREWORD 1. EXECUTIVE SUMMARY 2. TERMS OF REFERENCE 3. INTRODUCTION Objectives and Focus of the Report What is Chemistry? The Role of Chemistry in Modern Society Context of this Report 4. ASSESSMENT OF THE SCIENCE AND TECHNOLOGY GENERATED BY UNIVERSITIES IN THE UK Process Used by the Committee Self -Evaluation by Departments of Chemistry in the UK Evaluations by the International Community: Summary Assessments by the Committee o f Fields of Research in Academic Chemistry in the UK Summary of Assessments by the Committee 5. PERSONNEL Training of Ph.D. Candidates and Postdoctoral Fellows Staffing and Careers Recruiting and Retention of Senior Facul ty in the UK 6. THE ENVIRONMENT FOR RESEARCH Physical Infrastructure in the Universities Academic/Industrial Partnerships The Perception of “Fairness” in Distribution of Resources Among Universities 7. RECOMMENDATIONS TO EPSRC Restructure Ph.D. Education, and Support for Chemical Research, to Encourage Revolutionary and Multidisciplinary Science and Engineering Compete for Talent Globally Work with the Universities to Develop and Art iculate Opportunities and a Shared Strategy for Academic Chemistry 8. FINAL REMARKS APPENDICES 2 FOREWORD The UK’s Engineering and Physical Sciences Research Council (EPSRC) commissioned the Roy al Society of Chemistry (RSC) to co -ordinate a major review of research in the chemical sciences in UK universities. This study is the fifth in a series aimed at providing an international assessment of core areas of the UK science and engineering researc h base. The first such study was undertaken in the field of Engineering (1999), followed by assessments of Physics and Astronomy (2000), Computer Science (2001), and Materials Science and Technology (March 2002). -
International the News Magazine of IUPAC
CHEMISTRY International The News Magazine of IUPAC November-December 2013 Volume 35 No. 6 A Look Back at Ernest Solvay InChI, the Chemical Identifier INTERNATIONAL UNION OF PURE AND APPLIED CHEMISTRY Suffixes and the Naming of Elements From the Editor A Heartfelt Congratulations to OPCW CHEMISTRY International n 11 October 2013, the Norwegian Nobel Committee announced that The News Magazine of the International Union of Pure and Othis year’s Nobel Peace Prize will be awarded to the Organization for Applied Chemistry (IUPAC) the Prohibition of Chemical Weapons (OPCW) for its extensive efforts to eliminate chemical weapons. www.iupac.org/publications/ci This is a great and important recognition for an organization that works so diligently to make the world a safer place. I am humbled to Managing Editor: Fabienne Meyers relay IUPAC’s heartfelt congratulations to our Production Editor: Chris Brouwer OPCW colleagues for this fantastic and well- Design: pubsimple deserved recognition for their tireless work to free the world of chemical weapons. All correspondence to be addressed to: In recent years, IUPAC has been privileged Fabienne Meyers to work with OPCW, both in contributing IUPAC, c/o Department of Chemistry technical expertise to the review conferences Boston University of the Chemical Weapons Convention (CWC) Metcalf Center for Science and Engineering and in developing educational resources on the multiple uses of chemi- 590 Commonwealth Ave. cals. As recently as the July-Aug 2013 issue of Chemistry International, Boston, MA 02215, USA Leiv K. Sydnes contributed a feature outlining IUPAC’s involvement with OPCW over the last 12 years. That feature was triggered by the recent E-mail: [email protected] IUPAC Technical Report (in the April 2013 Pure and Applied Chemistry) Phone: +1 617 358 0410 titled “Impact of Scientific Developments on the Chemical Weapons Fax: +1 617 353 6466 Convention,” released in advance of the Third Review Conference of the CWC held last April. -
Molecular Machines
Synthetic small molecules as machines: a chemistry perspective Professor Pradyut Ghosh Department of Inorganic Chemistry Indian Association for the Cultivation of Science 2A & 2B Raja S. C. Mullick Road, Kolkata 700032 E-mail: [email protected] 28th Mid-Year Meeting of Indian Academy of Sciences (IASc), Bengaluru, 1st July 2017 Feynman’s Dream on Molecular Machines Classic Talk given at the Meeting of the American Society of Physics in 1959 about the future of design and engineering at the molecular level The possibility of building small machines from atoms i.e. machines small enough to manufacture objects with atomic precision. Transcript of Talk : Caltech Eng. Sci. 1960, 23:5, 22–36. Feynman’s 1984 Visionary Lecture……. How small can you make machinery? Machines with dimensions on the nanometre scale. These already existed in nature. He gave bacterial flagella, corkscrew-shaped macromolecules as an example. Future vision – molecular machines will exist within 25–30 years. The aim of the lecture: To inspire the researchers in the audience, to get them to test the limits of what they believed possible. What neither Feynman, nor the researchers in the audience, knew at the time was that the first step towards molecular machinery had already been taken, but in a rather different way to that predicted by Feynman. What is that? 1953: Mechanical Bonds in Molecules Mid-20th century: Chemists were trying to build molecular chains in which ring-shaped molecules were linked together. The dream: To create mechanical bonds, where molecules are interlocked without the atoms interacting directly with each other. Frisch, H. -
2015 Annual Report PROFILE
ASKING MORE 2015 Annual Report PROFILE SUSTAINABLE VALUE CREATION Our strategy is a virtuous circle in which positive actions interact to create enriching contributions centered around a single goal: creating a future with more potential. MORE talent BY ACTING RESPONSIBLY BY INNOVATING Asking from chemistry MORE MORE innovative commitment sustainable solutions BY CONTRIBUTING TO SOCIETY € 12.4 bn 30,900 145 NET SALES EMPLOYEES INDUSTRIAL SITES AND A PRESENCE IN 53 COUNTRIES Who we are An international chemical and advanced materials company, Solvay assists its customers in innovating, developing, and delivering high-value, sustainable products and solutions that consume less energy and reduce CO2 emissions, optimize the use of resources and improve the quality of life. Solvay serves diversified global end markets including automotive and aerospace, consumer goods and healthcare, energy and environment, electricity and electronics, building and construction, as well as industrial applications. Solvay is headquartered in Brussels with about 30,000 employees spread across 53 countries. It generated pro forma net sales of €12.4 bn in 2015, with 90% made from activities where it ranks among the world’s top 3 players. Solvay SA (SOLB.BE) is listed on Euronext in Brussels and Paris (Bloomberg: SOLB.BB – Reuters: SOLB.BR). SOLVAY 2015 ANNUAL REPORT Asking from chemistry The 2015 Solvay Annual Report takes you inside our journey of transformation. We’re implementing an ambitious strategy to build a new model of sustainable chemistry that addresses the environmental and societal factors impacting our world. The challenge we have set ourselves is to achieve these strategic targets while continuing to drive value creation and profitable growth in a responsible way. -
How Molecules Became Machines
THE NOBEL PRIZE IN CHEMISTRY 2016 POPULAR SCIENCE BACKGROUND How molecules became machines The Nobel Prize in Chemistry 2016 is awarded to Jean-Pierre Sauvage, Sir J. Fraser Stoddart and Bernard L. Feringa for their development of molecular machines that are a thousand times thinner than a hair strand. This is the story of how they succeeded in linking molecules together to design everything from a tiny lift to motors and miniscule muscles. How small can you make machinery? This is the question that Nobel Laureate Richard Feynman, famed for his 1950s’ predictions of developments in nanotechnology, posed at the start of a visionary lecture in 1984. Barefoot, and wearing a pink polo top and beige shorts, he turned to the audience and said: “Now let us talk about the possibility of making machines with movable parts, which are very tiny.” He was convinced it was possible to build machines with dimensions on the nanometre scale. These already existed in nature. He gave bacterial flagella as an example, corkscrew-shaped macromole- cules which, when they spin, make bacteria move forward. But could humans – with their gigantic hands – build machines so small that you would need an electron microscope to see them? A vision of the future – molecular machines will exist within 25–30 years One possible way would be to build a pair of mechanical hands that are smaller than your own, which in turn build a pair of smaller hands, which build even smaller hands, and so on, until a pair of miniscule hands can build equally miniscule machinery.