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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 ]

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Thursday 27 July 2017, 11:00 at LPTHE, Bibliothèque SEM-INFOR (Séminaire informel) cond-mat.stat-mech

Mohammad Rajabpour ( Universidade Federal Fluminense, Rio ) Formation probabilities, post-measurement entanglement entropy and Casimir effect

Abstract: I will first introduce formation probability as a quantity which can determine the universality class of a quantum critical system. In other words, by calculating this quantity one can find the central charge and critical exponents of a quantum system and determine the universality class uniquely. I will show that calculating this quantity boils down to finding Casimir energy of two needles. Then using boundary conformal field theory (BCFT) techniques we find exact results for the formation probabilities. Numerical results for transverse field Ising model will be presented to support the analytical results. Then we will briefly talk about Shannon mutual information as another quantity which can play similar role. We will present a conjecture which connects Shannon mutual information to the central charge of the underlying conformal field theory. We will support the conjecture with many numerical calculations. Finally, we will introduce post-measurement entanglement entropy as a tripartite measure of entanglement. We will show that this quantity is related to the Casimir energy of needles on Riemann surfaces and can be calculated exactly for conformal field theories. To do that we use a slightly different method than twist operator technique. Many analytical results, such as, Renyi entropy, entanglement Hamiltonian, distribution of the eigenvalues of entanglement Hamiltonian, the effect of the boundary and Affleck-Ludwig boundary entropy can be discussed naturally in our framework. Few numerical results regarding free bosons and transverse field Ising chain will be presented as support for analytical results.

Thursday 27 July 2017, 11:00 at CPHT, Salle de conférences, bât. 6 IPN-X (Séminaire commun de physique théorique des particules IPN-CPHT-X) hep-ph

Asmita Mukherjee ( IIT Bombay, Mumbai ) Next to leading order QCD calculation of high pT jet production in pp collision

Abstract: We present a recent calculation of the cross section of identified hadron or photon inside a jet in pp collision at next-to-leading order in QCD. This provides a novel method to access the hadron and photon fragmentation functions, respectively, as functions of z. We use an analytic approach with the assumption that the jet is narrow.

Thursday 27 July 2017, 14:30 at LPTHE, Library LPTHE-PPH (Particle Physics at LPTHE) hep-ph

Sven Heinemeyer ( UAM ) SUSY, Dark Matter and five Higgs Bosons at the LHC

Abstract: The LHC sees a SM-like Higgs boson at 125 GeV and puts bounds on extended Higgs sectors and other BSM physics. We discuss the status of SUSY taking all current bounds into account. We show the implications for Dark Matter searches at the LHC and Direct Detection experiments. In particular we discuss that a 125 GeV SM-like Higgs boson can be realized easily in SUSY, taking all the relevant data into account. One particularly interesting interpretation has the observed Higgs boson as the second lightest one, and the lightest Higgs boson has escaped detection so far.

Wednesday 16 August 2017, 14:00 at LPTENS, Room Conf. IV
( Workshop on "Exceptional and ubiquitous Painlevé equations for Physics" Introductory review 90 min. ) WORK-CONF (Workshop or Conference) hep-th

Frank Loray ( Université de Rennes I ) TBA

Abstract: Please see webpage https://indico.in2p3.fr/event/14720/

Wednesday 16 August 2017, 16:00 at LPTENS, Room Conf. IV WORK-CONF (Workshop or Conference) hep-th

Simon Ruijsenaars ( University of Leeds ) Integrable systems of Calogero-Moser type

Thursday 17 August 2017, 09:30 at LPTENS, Room Conf. IV
( Please see webpage https://indico.in2p3.fr/event/14720/ Workshop on "Exceptional and ubiquitous Painlevé equations for Physics" ) WORK-CONF (Workshop or Conference) hep-th

Oleg Lisovyi ( Université de Tours ) TBA

Abstract: Connections between Painlevé tau functions and Nekrasov representation of the dual instanton partition functions

Friday 18 August 2017, 10:00 at LPTENS, Room Conf. IV WORK-CONF (Workshop or Conference) hep-th

Summer Institute Workshop on "Exceptional and ubiquitous Painlevé equations for Physics"

Abstract: Please see webpage https://indico.in2p3.fr/event/14720/

Monday 21 August 2017, 11:00 at LPTENS, Room Conf. IV WORK-CONF (Workshop or Conference) hep-th

Summer Institute TBA

Abstract: Please see webpage https://indico.in2p3.fr/event/14720/

Tuesday 22 August 2017, 11:00 at LPTENS, Room Conf. IV WORK-CONF (Workshop or Conference) hep-th

Summer Institute TBA

Abstract: Please see webpage https://indico.in2p3.fr/event/14720/

Wednesday 23 August 2017, 11:00 at LPTENS, Room Conf. IV WORK-CONF (Workshop or Conference) hep-th

Summer Institute TBA

Abstract: Please see webpage https://indico.in2p3.fr/event/14720/

Thursday 24 August 2017, 11:00 at LPTENS, Room Conf. IV WORK-CONF (Workshop or Conference) hep-th

Summer Institute TBA

Abstract: Please see webpage https://indico.in2p3.fr/event/14720/

Friday 25 August 2017, 11:00 at LPTENS, Room Conf. IV WORK-CONF (Workshop or Conference) hep-th

Summer Institute TBA

Abstract: Please see webpage https://indico.in2p3.fr/event/14720/

Wednesday 6 September 2017, 14:00 at IPHT, Amphi Claude Bloch, Bât. 774 SOUTEN-TH (Soutenance de thèse) physics

Soumya Sasmal ( IPhT ) (TBA)

Friday 8 September 2017, 13:00 at LPT, Amphi 1, bat 210, 2eme etage, LPT SOUTEN-TH (Soutenance de thèse) hep-ph

Lucas Lionni ( LPT Orsay ) TBA

Tuesday 12 September 2017, 14:00 at IPHT, (voir dans annonce) SOUTEN-TH (Soutenance de thèse) physics

Giulia Carra ( IPhT ) Etude des systèmes urbains : une approche physique

Abstract: Plus de 50\% de la population mondiale vit dans des zones urbaines et cette proportion devrait augmenter dans les prochaines décennies. Comprendre ce qui régit l'évolution des systèmes urbains est donc devenu d'une importance fondamentale. Ce renouveau d'intérêt combiné avec la disponibilité de données à grande échelle, permet d'entrevoir l'avènement d'une nouvelle science des villes, interdisciplinaire et basée sur les données. Des études récentes ont montré l'existence de régularités statistiques et de lois d'échelle pour plusieurs indicateurs socio-économiques, tels que la consommation d'essence, la distance moyenne parcourue quotidiennement, le cout des infrastructures, etc. Malgré plusieurs tentatives récentes, la compréhension théorique de ces résultats observés empiriquement demeure très partielle. Le but de cette thèse est d'obtenir une modélisation simplifiée, hors-équilibre de la croissance urbaine, en s'appuyant sur un petit nombre de mécanismes importants et qui fournit des prédictions quantitatives en accord avec les données empiriques. Pour cela, nous nous inspirerons des études en géographie quantitative et en économie spatiale et nous revisiterons certains de ces anciens modèles avec une nouvelle approche intégrant les outils et concepts de la physique. \\ \\ La soutenance aura lieu à : l'Institut des Systèmes Complexes (ISC-PIF), 133 rue Nationale, 75013 Paris.

Friday 15 September 2017, 14:00 at IPHT, Amphi Claude Bloch, Bât. 774 SOUTEN-TH (Soutenance de thèse) physics

Vardan Kaladzhyan ( IPhT ) (TBA)

Tuesday 19 September 2017, 14:00 at APC, 483A - Malevitch APC-TH (Seminar of the theory group of APC) hep-th

Vincent Vennin ( APC ) TBA

Thursday 21 September 2017, 14:00 at IPHT, Amphi Claude Bloch, Bât. 774 SOUTEN-TH (Soutenance de thèse) physics

Lais Sarem-Schunk ( IPhT ) (TBA)

Tuesday 26 September 2017, 14:00 at APC, 483 A - Malevitch APC-TH (Seminar of the theory group of APC) hep-th

Micaela Oertel ( LUTH ) TBA

Wednesday 27 September 2017, 14:00 at LPT, Amphi 1, bat 210, 2eme etage, LPT-Orsay SOUTEN-TH (Soutenance de thèse) hep-ph

Olcyr De Sumensari ( LPT Orsay ) TBA

Thursday 28 September 2017, 14:00 at LPT, amphi 1, bat 210, eme etage SOUTEN-TH (Soutenance de thèse) hep-ph

Mattias Rodriguez ( LPT Orsay, LAPTH Annecy ) TBA

Friday 29 September 2017, 13:00 at LPT, Amphi 1, bat 210, 2eme etage, LPT SOUTEN-TH (Soutenance de thèse) hep-ph

Andrei Angelescu ( LPT Orsay ) TBA

Tuesday 3 October 2017, 14:00 at APC, 483 A - Malevitch APC-TH (Seminar of the theory group of APC) hep-th

Félix Julié ( APC, Université Paris Diderot ) TBA

Monday 9 October 2017, 09:00 at IPHT, Salle Claude Itzykson, Bât. 774 SOUTEN-TH (Soutenance de thèse) physics

Thibault Lesieur ( IPhT ) (TBA)

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Thursday 27 July 2017, 11:00 at LPTHE, Bibliothèque	SEM-INFOR (Séminaire informel)	cond-mat.stat-mech
Mohammad Rajabpour ( Universidade Federal Fluminense, Rio )	Formation probabilities, post-measurement entanglement entropy and Casimir effect
Abstract:	I will first introduce formation probability as a quantity which can determine the universality class of a quantum critical system. In other words, by calculating this quantity one can find the central charge and critical exponents of a quantum system and determine the universality class uniquely. I will show that calculating this quantity boils down to finding Casimir energy of two needles. Then using boundary conformal field theory (BCFT) techniques we find exact results for the formation probabilities. Numerical results for transverse field Ising model will be presented to support the analytical results. Then we will briefly talk about Shannon mutual information as another quantity which can play similar role. We will present a conjecture which connects Shannon mutual information to the central charge of the underlying conformal field theory. We will support the conjecture with many numerical calculations. Finally, we will introduce post-measurement entanglement entropy as a tripartite measure of entanglement. We will show that this quantity is related to the Casimir energy of needles on Riemann surfaces and can be calculated exactly for conformal field theories. To do that we use a slightly different method than twist operator technique. Many analytical results, such as, Renyi entropy, entanglement Hamiltonian, distribution of the eigenvalues of entanglement Hamiltonian, the effect of the boundary and Affleck-Ludwig boundary entropy can be discussed naturally in our framework. Few numerical results regarding free bosons and transverse field Ising chain will be presented as support for analytical results.

Thursday 27 July 2017, 11:00 at CPHT, Salle de conférences, bât. 6	IPN-X (Séminaire commun de physique théorique des particules IPN-CPHT-X)	hep-ph
Asmita Mukherjee ( IIT Bombay, Mumbai )	Next to leading order QCD calculation of high pT jet production in pp collision
Abstract:	We present a recent calculation of the cross section of identified hadron or photon inside a jet in pp collision at next-to-leading order in QCD. This provides a novel method to access the hadron and photon fragmentation functions, respectively, as functions of z. We use an analytic approach with the assumption that the jet is narrow.

Thursday 27 July 2017, 14:30 at LPTHE, Library	LPTHE-PPH (Particle Physics at LPTHE)	hep-ph
Sven Heinemeyer ( UAM )	SUSY, Dark Matter and five Higgs Bosons at the LHC
Abstract:	The LHC sees a SM-like Higgs boson at 125 GeV and puts bounds on extended Higgs sectors and other BSM physics. We discuss the status of SUSY taking all current bounds into account. We show the implications for Dark Matter searches at the LHC and Direct Detection experiments. In particular we discuss that a 125 GeV SM-like Higgs boson can be realized easily in SUSY, taking all the relevant data into account. One particularly interesting interpretation has the observed Higgs boson as the second lightest one, and the lightest Higgs boson has escaped detection so far.

Wednesday 16 August 2017, 14:00 at LPTENS, Room Conf. IV ( Workshop on "Exceptional and ubiquitous Painlevé equations for Physics" Introductory review 90 min. )	WORK-CONF (Workshop or Conference)	hep-th
Frank Loray ( Université de Rennes I )	TBA
Abstract:	Please see webpage https://indico.in2p3.fr/event/14720/

Wednesday 6 September 2017, 14:00 at IPHT, Amphi Claude Bloch, Bât. 774	SOUTEN-TH (Soutenance de thèse)	physics
Soumya Sasmal ( IPhT )	(TBA)

Tuesday 19 September 2017, 14:00 at APC, 483A - Malevitch	APC-TH (Seminar of the theory group of APC)	hep-th
Vincent Vennin ( APC )	TBA