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The SEMPARIS seminar webserver hosts annoucements of all seminars taking place in Paris area, in all topics of physics, mathematics and computer science. It allows registered users to receive a selection of announcements by email on a daily or weekly basis, and offers the possibility to archive PDF or Powerpoint files, making it available to the scientific community. [ More information ]
| Upcoming Seminars at LPTHE | ||
| [ scheduler view ] | ||
| Thursday 20 January 2022, 11:00 at
IHP,
zoom ( https://zoom.us/j/97507124810 Meeting ID: 975 0712 4810 Passcode: 1234 ) | RENC-THEO (Rencontres Théoriciennes) | hep-th |
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| Abstract: | This talk will present the exact expression for an integrated correlator of four superconformal primary operators in the stress tensor multiplet of SU(N) N = 4 supersymmetric Yang-Mills, based on the localised partition function of the N = 2∗ theory. I will show that this integrated correlator can be expressed as a strikingly simple two-dimensional lattice sum. This is a function of the complex Yang–Mills coupling, and is manifestly invariant under SL(2, Z) (Montonen–Olive) duality. The correlator satisfies a powerful Laplace equation that relates its value for SU(N) to its value for SU(N−1) and SU(N+1). For finite N the correlator reproduces and extends perturbative and non-perturbative N = 4 SYM results. The large-N expansion is holographically related to the SL(2, Z)-invariant low energy expansion of the type IIB superstring four-graviton amplitude in AdS5 × S5. The talk will also describe the extension of of these results to n-point correlators with n > 4 that violate the U(1) bonus symmetry maximally. | |
| Thursday 20 January 2022, 14:00 at
IHP,
zoom ( https://zoom.us/j/97507124810 Meeting ID: 975 0712 4810 Passcode: 1234 ) | RENC-THEO (Rencontres Théoriciennes) | hep-th |
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| Abstract: | I will review recent progress on carving out the space of consistent weakly coupled gravitational effective field theories, both in flat space and in Anti de Sitter space. The main technical tools are dispersive sum rules for the S-matrix (flat space) or for CFT correlators (AdS space), which follow from the general principles of unitarity and causality. Higher derivative couplings are expected to be of order one in the units of the UV cutoff. Our approach justifies this expectation and allows to prove rigorous bounds on the order one coefficients. In particular, we prove a precise version of the conjecture that any large N CFT with a large gap must be dual to a local effective field theory in AdS. | |
| Tuesday 25 January 2022, 14:00 at
LPTHE,
Library & Zoom link in comments ( Join Zoom Meeting https://cern.zoom.us/j/67310205088?pwd=cytWVUJTZTZMWjlER3JwcXF2SkxLdz09 Meeting ID: 673 1020 5088 Passcode: 127835 ) | LPTHE-PPH (Particle Physics at LPTHE) | hep-ph |
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| Abstract: | The analysis of azimuthal correlations along with jet shapes in multiparticle production can be useful to uncover the existence of new physics beyond the Standard Model, e.g., Hidden Valley, in the e + e − annihilation at high energies. In this seminar, based on previous theoretical studies and using PYTHIA8 event generator, it is found that both azimuthal and rapidity long-range correlations are enhanced due to the presence of a new stage of matter on top of the QCD partonic cascade. Ridge structures, similar to those observed at the LHC, show up providing a possible signature of new physics at future e + e −colliders. Preliminary results on pp collisions will be discussed for completeness. | |
| Thursday 27 January 2022, 14:00 at LPTHE, Amphi Charpak LPNHE groundfloor between towers 23 and 32 and online (zoom) | TQM (Theory of quantum matter) | math-ph |
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| Abstract: | https://us06web.zoom.us/j/84343644046?pwd=aEFRNG96ZlZYSTJSWUtUQ0t4aHRPdz09 | |
| Thursday 27 January 2022, 14:00 at LPENS, E227a | LPTENS-HE (Séminaire commun LPTENS-LPTHE) | hep-th |
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| Thursday 10 February 2022, 14:00 at LPTHE, INSP Jussieu towers 22-23 room 3-17 and online (zoom) | TQM (Theory of quantum matter) | math-ph |
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| Abstract: | https://us06web.zoom.us/j/88244544737?pwd=N2dnVllwSGxKRHRRVjZFb0taNFk3QT09 | |
| Thursday 10 March 2022, 14:00 at LPTHE, INSP Jussieu towers 22-23 room 3-17 and online (zoom) | TQM (Theory of quantum matter) | math-ph |
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| Abstract: | https://us06web.zoom.us/j/81226484885?pwd=K1ZRMWlrR1Y0UEIxcnJpclJHa1lUZz09 ID de réunion : 812 2648 4885 Code secret : 066997 | |
| Thursday 17 March 2022, 11:00 at LPTHE, bibliothèque du LPTHE, tour 13-14, 4eme étage | SEM-DARBOUX (Séminaire Darboux - physique théorique et mathématiques) | hep-th |
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| Thursday 24 March 2022, 14:00 at LPTHE, ???? | TQM (Theory of quantum matter) | math-ph |
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| Thursday 19 May 2022, 11:00 at LPTHE, LPTHE library | SEM-DARBOUX (Séminaire Darboux - physique théorique et mathématiques) | hep-th |
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| Thursday 2 June 2022, 14:00 at LPTHE, ??? | TQM (Theory of quantum matter) | math-ph |
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| Abstract: | TBA | |
| Thursday 9 June 2022, 14:00 at LPTHE, ???? | TQM (Theory of quantum matter) | math-ph |
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