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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 -
DPF Newsletter - December 1999
DPF Newsletter - December 1999 In This Issue... DPF Elections DPF Symposia Stanley Wojcicki was elected Vice-Chair of DPF in this year's election. Peter Meyers was elected DOE & HEPAP News Divisional Councillor. The new Executive Committee members are Janet Conrad and Bill NSF News Carithers. APS Prize Winners The members of the 2000 DPF Executive Committee and the final years of their terms are New APS Fellows Chair: Eugene Beier (2000). ICFA Statement Chair-Elect: Chris Quigg (2000). Vice-Chair: Stanley Wojcicki (2000). DPF Committees Past Chair: Howard Gordon (2000). Secretary-Treasurer: Catherine Newman- Holmes (2000). Proceedings of DPF 99 Now Division Councilor: Sally Dawson (2002), Available on the Web Peter Meyers(2003). Executive Committee Members: Vernon Barger (2001), Bill Carithers (2002), Janet Proceedings of the 1999 DPF Conrad (2002), Glennys Farrar (2001), meeting held in January, 1999 at Nicholas Hadley (2000) and Donna Naples UCLA are now available on the (2000). Web at http://www.dpf99.library.ucla.edu/. We would like to take this opportunity to thank These proceedings were published DPF Executive Committee members whose terms only electronically. are expiring in 1999: Howard Georgi (Past Chair), Robert Cahn (Divisional Councillor) and Pat Burchat and Kay Kinoshita (Executive Committee members). We also express our appreciation to all DPF - 2000 who agreed to run for DPF office this year. We were fortunate to have an excellent slate of DPF 2000 will be held August 9 - candidates. 12, 2000, at Ohio State University in Columbus, Ohio. The program This was DPF's first experience with electronic is being developed. -
Prizes, Fellowships and Scholarships
ESEARCH OPPORTUNITIES ALERT Issue 26: Volume 2 R SCHOLARSHIPS, PRIZES AND FELLOWSHIPS (Quarter: July - September, 2016) A Compilation by the Scholarships & Prizes RESEARCH SERVICES UNIT Early/ Mid Career Fellowships OFFICE OF RESEARCH, INNOVATION AND DEVELOPMENT (ORID), UNIVERSITY OF GHANA Pre/ Post-Doctoral Fellowships Thesis/ Dissertation Funding JUNE 2016 Issue 26: Volume 2: Scholarships, Prizes and Fellowships (July – September, 2016) TABLE OF CONTENT OPPORTUNITIES FOR JULY 2016 DAVID ADLER LECTURESHIP AWARD ............................................................................................................ 15 HAYMAN PRIZE FOR PUBLISHED WORK PERTAINING TO TRAUMATISED CHILDREN AND ADULTS ..................................................................................................................................................................... 15 HANS A BETHE PRIZE ........................................................................................................................................... 16 TOM W BONNER PRIZE IN NUCLEAR PHYSICS ............................................................................................ 17 HERBERT P BROIDA PRIZE .................................................................................................................................. 18 OLIVER E BUCKLEY PRIZE IN CONDENSED MATTER PHYSICS ............................................................... 18 DANNIE HEINEMAN PRIZE FOR MATHEMATICAL PHYSICS.................................................................. -
Annual Report to Industry Canada Covering The
Annual Report to Industry Canada Covering the Objectives, Activities and Finances for the period August 1, 2008 to July 31, 2009 and Statement of Objectives for Next Year and the Future Perimeter Institute for Theoretical Physics 31 Caroline Street North Waterloo, Ontario N2L 2Y5 Table of Contents Pages Period A. August 1, 2008 to July 31, 2009 Objectives, Activities and Finances 2-52 Statement of Objectives, Introduction Objectives 1-12 with Related Activities and Achievements Financial Statements, Expenditures, Criteria and Investment Strategy Period B. August 1, 2009 and Beyond Statement of Objectives for Next Year and Future 53-54 1 Statement of Objectives Introduction In 2008-9, the Institute achieved many important objectives of its mandate, which is to advance pure research in specific areas of theoretical physics, and to provide high quality outreach programs that educate and inspire the Canadian public, particularly young people, about the importance of basic research, discovery and innovation. Full details are provided in the body of the report below, but it is worth highlighting several major milestones. These include: In October 2008, Prof. Neil Turok officially became Director of Perimeter Institute. Dr. Turok brings outstanding credentials both as a scientist and as a visionary leader, with the ability and ambition to position PI among the best theoretical physics research institutes in the world. Throughout the last year, Perimeter Institute‘s growing reputation and targeted recruitment activities led to an increased number of scientific visitors, and rapid growth of its research community. Chart 1. Growth of PI scientific staff and associated researchers since inception, 2001-2009. -
2018 APS Prize and Award Recipients
APS Announces 2018 Prize and Award Recipients The APS would like to congratulate the recipients of these APS prizes and awards. They will be presented during APS award ceremonies throughout the year. Both March and April meeting award ceremonies are open to all APS members and their guests. At the March Meeting, the APS Prizes and Awards Ceremony will be held Monday, March 5, 5:45 - 6:45 p.m. at the Los Angeles Convention Center (LACC) in Los Angeles, CA. At the April Meeting, the APS Prizes and Awards Ceremony will be held Sunday, April 15, 5:30 - 6:30 p.m. at the Greater Columbus Convention Center in Columbus, OH. In addition to the award ceremonies, most prize and award recipients will give invited talks during the meeting. Some recipients of prizes, awards are recognized at APS unit meetings. For the schedule of APS meetings, please visit http://www.aps.org/meetings/calendar.cfm. Nominations are open for most 2019 prizes and awards. We encourage members to nominate their highly-qualified peers, and to consider broadening the diversity and depth of the nomination pool from which honorees are selected. For nomination submission instructions, please visit the APS web site (http://www.aps.org/programs/honors/index.cfm). Prizes 2018 APS MEDAL FOR EXCELLENCE IN PHYSICS 2018 PRIZE FOR A FACULTY MEMBER FOR RESEARCH IN AN UNDERGRADUATE INSTITUTION Eugene N. Parker University of Chicago Warren F. Rogers In recognition of many fundamental contributions to space physics, Indiana Wesleyan University plasma physics, solar physics and astrophysics for over 60 years. -
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. -
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. -
DPF NEWSLETTER - April 15, 1996
DPF NEWSLETTER - April 15, 1996 To: Members of the Division of Particles and Fields From: Jonathan Bagger, Secretary-Treasurer, [email protected] 1995 DPF Elections Howard Georgi was elected Vice-Chair of the DPF. Tom Devlin and Heidi Schellman were elected to the Executive Committee. George Trilling was elected as a Division Councillor. The current members of the DPF Executive Committee and the final years of their terms are Chair: Frank Sciulli (1996) Chair-Elect: Paul Grannis (1996) Vice-Chair: Howard Georgi (1996) Past Chair: David Cassel (1996) Secretary-Treasurer: Jonathan Bagger (1997) Division Councillor: Henry Frisch (1997), George Trilling (1998) Executive Board: Sally Dawson (1996), Tom Devlin (1998), Martin Einhorn (1997), John Rutherfoord (1997), Heidi Schellman (1998), Michael Shaevitz (1996) Call for Nominations: 1996 DPF Elections The 1996 Nominating Committee is hard at work. Please send suggestions for candidates to the Chair, Abe Seiden of Santa Cruz ([email protected]). The other members of the Nominating Committee are Melissa Franklin, Robert Jaffe, Michael Murtagh, Helen Quinn, and Bill Reay. DPF Members are also entitled to nominate candidates by petition. Twenty signatures from DPF members are required. Nominations will be accepted by Jonathan Bagger until May 15, 1996. Snowmass 1996: New Directions for High Energy Physics The 1996 Snowmass Workshop on New Directions in High Energy Physics will be held in Snowmass, Colorado, from June 24 to July 12, 1996. Arrival, registration, and a reception will be on June 24. Full-day plenary sessions will be held on June 25-26 and July 11-12. This workshop will provide an opportunity to begin to develop a coherent plan for the longer term future for U.S. -
Advisor Input Part 2
Paul O’Connor Dear Ian and Marcel, Here is the input you requested on the Instrumentation Task Force topics. I have confined my comments to the instrumentation needs of High Energy Physics, although at a multipurpose lab like BNL we see quite significant overlap with other disciplines, particularly photon science and medical imaging. 1. National Instrumentation Board It's unclear what authority this body could have. Perhaps a better model would be an advisory panel to the DOE and NSF or a sub-panel of HEPAP. Coordination with NP and BES programs may be more effective. 2. Targeted Resources at National Labs I support the idea of dedicating a fraction of each labs' LDRD funding to leading-edge instrumentation development. In addition, Increased support for dedicated detector instrumentation groups at the labs is also needed. The more common model, engineering support organizations whose funding comes from charge-back to programs, makes it difficult to develop and sustain the talent and equipment resources needed to respond to next-generation instrumentation needs. 3. National Instrumentation fellowships Few university physics departments promote talented students to follow instrumentation-related courses of study. There are some instances in which a MS in Instrumentation is offered to grad students who fail Ph.D. qualifying exams. The sense that instrumentation is a path for less-qualified students certainly does not promote the development of the next generation of talented instrumentalists. A suitably prestigious fellowship program could help reverse this trend, in conjunction with the Instrumentation schools. 4. Instrumentation schools Of the topics listed for the task force this is one that I most strongly support. -
Advanced Information on the Nobel Prize in Physics, 5 October 2004
Advanced information on the Nobel Prize in Physics, 5 October 2004 Information Department, P.O. Box 50005, SE-104 05 Stockholm, Sweden Phone: +46 8 673 95 00, Fax: +46 8 15 56 70, E-mail: [email protected], Website: www.kva.se Asymptotic Freedom and Quantum ChromoDynamics: the Key to the Understanding of the Strong Nuclear Forces The Basic Forces in Nature We know of two fundamental forces on the macroscopic scale that we experience in daily life: the gravitational force that binds our solar system together and keeps us on earth, and the electromagnetic force between electrically charged objects. Both are mediated over a distance and the force is proportional to the inverse square of the distance between the objects. Isaac Newton described the gravitational force in his Principia in 1687, and in 1915 Albert Einstein (Nobel Prize, 1921 for the photoelectric effect) presented his General Theory of Relativity for the gravitational force, which generalized Newton’s theory. Einstein’s theory is perhaps the greatest achievement in the history of science and the most celebrated one. The laws for the electromagnetic force were formulated by James Clark Maxwell in 1873, also a great leap forward in human endeavour. With the advent of quantum mechanics in the first decades of the 20th century it was realized that the electromagnetic field, including light, is quantized and can be seen as a stream of particles, photons. In this picture, the electromagnetic force can be thought of as a bombardment of photons, as when one object is thrown to another to transmit a force. -
Belgian Nobel Laureate Englert Lauds Late Colleague Brout 8 October 2013
Belgian Nobel laureate Englert lauds late colleague Brout 8 October 2013 Belgian scientist Francois Englert said his Last year, the Large Hadron Collider at CERN happiness Tuesday at winning the Nobel Prize for finally provided the experimental proof to back up Physics was tempered with regret that life-long the theory and Englert paid tribute to all the colleague Robert Brout could not enjoy the plaudits scientists, including Higgs, who had helped solve too. the great puzzle of modern physics. "Of course I am happy to have won the prize, that Englert said he and his colleagues all understood goes without saying, but there is regret too that my the importance of their work but the idea that they colleague and friend, Robert Brout, is not there to one day would win the Nobel prize had never been share it," Englert told a press conference at the an issue. Free University of Brussels (ULB). Asked what comes next, he replied: "There are Robert Brout died in 2011, having begun the huge numbers of problems still be solved. This just search for the elusive Higgs Boson—the "God marks a step in our understanding of the world." particle"—with Englert in the 1960s at the ULB. © 2013 AFP "It was a very long collaboration, it was a friendship. I was with Robert until his death," Englert said. Now 80 but still working, the bespectacled and bearded professor responded in good humour to questions, joking about the delay in the announcement. With no news for an hour, Englert said he had thought it was not to be but "we decided just the same to have a party.. -
Brief Newsletter from World Scientific February 2017
Brief Newsletter from World Scientific February 2017 Exclusive Interview with 2003 Nobel Laureate One of the Top Condensed Matter Theorists and World Scientific Author Anthony Leggett Sir Professor Anthony James Leggett is a distinguished physicist who was awarded the Nobel Prize in Physics in 2003 for his pioneering contributions to the theory of superconductors and superfluids. He is currently a professor at the University of Illinois at Urbana-Champaign. Prof Leggett gave a presentation at the 2016 APS March Meeting in Baltimore, USA on “Reflections on the past, present and future of condensed matter physics”. In a phone interview, he shared with us some of his thoughts and further musings on the future of condensed matter physics. Paradigm Shift and Our Quest for the Unknown Chad Hollingsworth Your talk at the APS March Meeting 2016 mentioned developments That probably depends on your current tenure status! Certainly, if that you classified as “paradigm shifts”. Are there any recent you have a secure, tenured job (as I have been fortunate enough to discoveries that you would classify as paradigm shifts? have for the last few decades), then I think most certainly it’s better Well, if we go slightly outside the area of condensed matter physics to explore the unknown. But, of course, I appreciate that in the current as it has been conventionally defined, then, undoubtedly, any employment situation, people who have not got a tenured job need revolution which overthrew the view of quantum mechanics as a to think about their future. This may well be a rather strong pressure complete account of the world would, I think, certainly qualify as a to basically explore the known further.