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 ] 
Monday 3 October 2022, 14:00 at
LPENS,
L369, 24 rue Lhomond ( 3 lecture minicourse. Each lecture 2 hours. Inperson only )  LPTENSHE (Séminaire commun LPTENSLPTHE)  hepth 



Abstract:  In quantum theory, we often calculate observables approximately by using perturbative series in a small parameter. These series are typically factorially divergent, so we need to make sense of them. The theory of resurgence gives a general framework to do this, and upgrades perturbative series to so called transseries, which include exponentially small corrections and make it possible to incorporate nonperturbative physics in a systematic way. Many nonperturbative techniques in quantum theory (like instanton calculus and renormalon physics) are in fact particular examples of this general framework. In these lectures I will give an introduction to resurgence with a focus on applications to quantum theory. After introducing some elementary resurgent technology, I will discuss resurgence in onedimensional quantum mechanics, and then proceed to discuss what is known about the resurgent structure of quantum field theory. 
Wednesday 12 October 2022, 14:00 at
LPENS,
L363, 24 rue Lhomond ( 3 lecture minicourse. Each lecture 2 hours. Inperson only )  LPTENSHE (Séminaire commun LPTENSLPTHE)  hepth 



Abstract:  In quantum theory, we often calculate observables approximately by using perturbative series in a small parameter. These series are typically factorially divergent, so we need to make sense of them. The theory of resurgence gives a general framework to do this, and upgrades perturbative series to so called transseries, which include exponentially small corrections and make it possible to incorporate nonperturbative physics in a systematic way. Many nonperturbative techniques in quantum theory (like instanton calculus and renormalon physics) are in fact particular examples of this general framework. In these lectures I will give an introduction to resurgence with a focus on applications to quantum theory. After introducing some elementary resurgent technology, I will discuss resurgence in onedimensional quantum mechanics, and then proceed to discuss what is known about the resurgent structure of quantum field theory. 
Thursday 13 October 2022, 11:00 at LPTHE, bibliothèque du LPTHE, tour 1314, 4eme étage  SEMDARBOUX (Séminaire Darboux  physique théorique et mathématiques)  hepthmath.AG 



Abstract:  Birational symmetries are among the oldest in literature, starting with the involution at the circle by Apollonius. A birational map is simply a map whose coordinates are quotients of polynomials and that have an inverse map of the same type. The group of birational maps of the plane is very large and has enjoyed attention on and off for about 150 years. In this talk I will give an overview of some recent advances. 
Thursday 20 October 2022, 10:00 at LPTHE, Jussieu, Conference room 44.45.106 (access via tower 44)  WORKCONF (Workshop or Conference)  mathph 


Friday 21 October 2022, 10:00 at LPTHE, Jussieu, Conference room 44.45.106 (access via tower 44)  WORKCONF (Workshop or Conference)  mathph 


Thursday 27 October 2022, 14:00 at LPTHE, INSP Jussieu towers 2223 room 317  TQM (Theory of quantum matter)  condmat 



Abstract:  TBA 
Thursday 10 November 2022, 14:00 at LPTHE, INSP Jussieu towers 2223 room 317  TQM (Theory of quantum matter)  condmat 



Abstract:  TBA 
Thursday 17 November 2022, 11:00 at LPTHE, bibliothèque du LPTHE, tour 1314, 4eme étage  SEMDARBOUX (Séminaire Darboux  physique théorique et mathématiques)  hepthmath.AGmath.SG 


Thursday 24 November 2022, 14:00 at LPTHE, INSP Jussieu towers 2223 room 317  TQM (Theory of quantum matter)  condmat 



Abstract:  TBA 
Thursday 1 December 2022, 11:00 at LPTHE, bibliothèque du LPTHE, tour 1314, 4eme étage  SEMDARBOUX (Séminaire Darboux  physique théorique et mathématiques)  hepth 


Thursday 15 December 2022, 11:00 at LPTHE, bibliothèque du LPTHE, tour 1314, 4eme étage  SEMDARBOUX (Séminaire Darboux  physique théorique et mathématiques)  hepth 


Thursday 19 January 2023, 14:00 at LPTHE, ????  TQM (Theory of quantum matter)  hepth 



Abstract:  TBA 
Thursday 26 January 2023, 11:00 at LPTHE, bibliothèque du LPTHE, tour 1314, 4eme étage  SEMDARBOUX (Séminaire Darboux  physique théorique et mathématiques)  hepth 



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