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 14 December 2023, 11:00 at LPTMS, Salle des séminaires du FAST et du LPTMS, bâtiment Pascal n°530  LPTMS (Séminaire du Laboratoire de Physique Théorique et Modèles Statistiques (Orsay))  condmat.statmech 


Friday 15 December 2023, 10:15 at
IHES,
Amphithéâtre Léon Motchane ( Cours de l'IHES : https://www.ihes.fr/evenements/#cours )  MATHIHES (TBA)  math 



Abstract:  The purpose of this course is to propose new foundations for analytic geometry. The topics covered are as follows: 1. Light condensed abelian groups. 2. Analytic rings. 3. Analytic stacks. 4. Examples. 
Friday 15 December 2023, 13:45 at LPTMS, Salle des séminaires du FAST et du LPTMS, bâtiment Pascal n°530  LPTMS (Séminaire du Laboratoire de Physique Théorique et Modèles Statistiques (Orsay))  condmat.statmech 


Monday 18 December 2023, 11:00 at IPHT, Salle Claude Itzykson, Bât. 774  IPHTPHM (Séminaire de physique mathématique)  mathph 



Abstract:  We thoroughly revisit the ferromagnetic Ising chain under Glauber dynamics in the case where temperature depends on time according to an arbitrary protocol. We show how the Glauber theory simplifies in the lowtemperature scaling regime where the typical size of the ferromagnetic domains is much larger than the lattice spacing. We analyse in depth various classes of protocols, including slow quenches over a large but finite quenching time, everlasting slow quenches, periodic temperature protocols, and the Kovacs effect. The key observables are the density of domain walls, the susceptibility, and their dimensionless product referred to as the form factor. Our quantitative results are compared to the phenomenological KibbleZurek scaling theory whenever such a comparison is possible. Based on a recent work in collaboration with Claude GodrÃ¨che. 
Tuesday 19 December 2023, 11:00 at LPTMS, Salle des séminaires du FAST et du LPTMS  LPTMS (Séminaire du Laboratoire de Physique Théorique et Modèles Statistiques (Orsay))  condmat.statmech 


Tuesday 19 December 2023, 14:00 at IMO, Onlineonly. Zoom link by subscribing at https://seedseminar.apps.math.cnrs.fr/  SEED (Seed Seminar of Mathematics and Physics)  mathph 


Wednesday 20 December 2023, 10:00 at IPHT, Salle Claude Itzykson, Bât. 774  IPHTSEM (Séminaire du IPHT)  physics 



Abstract:  To be announced. 
Wednesday 20 December 2023, 10:15 at
IHES,
Amphithéâtre Léon Motchane ( Cours de l'IHES : https://www.ihes.fr/evenements/#cours )  MATHIHES (TBA)  math 



Abstract:  The purpose of this course is to propose new foundations for analytic geometry. The topics covered are as follows: 1. Light condensed abelian groups. 2. Analytic rings. 3. Analytic stacks. 4. Examples. 
Wednesday 20 December 2023, 12:45 at LPENS, 3 rue d Ulm, College de France  FORUMENS (Forum de Physique Statistique @ ENS)  condmat.statmech 



Abstract:  TBA 
Friday 22 December 2023, 10:15 at
IHES,
Amphithéâtre Léon Motchane ( Cours de l'IHES : https://www.ihes.fr/evenements/#cours )  MATHIHES (TBA)  math 



Abstract:  The purpose of this course is to propose new foundations for analytic geometry. The topics covered are as follows: 1. Light condensed abelian groups. 2. Analytic rings. 3. Analytic stacks. 4. Examples. 
Monday 8 January 2024, 13:30 at LPENS, U209 (29 rue d'Ulm)  LPENSMDQ (Séminaire Matériaux et Dispositifs Quantiques du LPENS)  condmat 


Tuesday 9 January 2024, 14:00 at LPTMS, LPTMS seminar room  LPTMS (Séminaire du Laboratoire de Physique Théorique et Modèles Statistiques (Orsay))  condmat.statmech 


Wednesday 10 January 2024, 10:15 at
IHES,
Amphithéâtre Léon Motchane ( Cours de l'IHES : https://www.ihes.fr/evenements/#cours )  MATHIHES (TBA)  math 



Abstract:  The purpose of this course is to propose new foundations for analytic geometry. The topics covered are as follows: 1. Light condensed abelian groups. 2. Analytic rings. 3. Analytic stacks. 4. Examples. 
Thursday 11 January 2024, 10:00 at IHP, 314 (Grisvard)  RENCTHEO (Rencontres Théoriciennes)  hepth 


Friday 12 January 2024, 10:15 at
IHES,
Amphithéâtre Léon Motchane ( Cours de l'IHES : https://www.ihes.fr/evenements/#cours )  MATHIHES (TBA)  math 



Abstract:  The purpose of this course is to propose new foundations for analytic geometry. The topics covered are as follows: 1. Light condensed abelian groups. 2. Analytic rings. 3. Analytic stacks. 4. Examples. 
Tuesday 16 January 2024, 11:00 at LPTMS, Salle des séminaires du FAST et du LPTMS, bâtiment Pascal n°530  LPTMS (Séminaire du Laboratoire de Physique Théorique et Modèles Statistiques (Orsay))  condmat.statmech 


Wednesday 17 January 2024, 10:15 at
IHES,
Amphithéâtre Léon Motchane ( Cours de l'IHES : https://www.ihes.fr/evenements/#cours )  MATHIHES (TBA)  math 



Abstract:  The purpose of this course is to propose new foundations for analytic geometry. The topics covered are as follows: 1. Light condensed abelian groups. 2. Analytic rings. 3. Analytic stacks. 4. Examples. 
Thursday 18 January 2024, 11:00 at IHES, Amphithéâtre Léon Motchane  MATHIHES (TBA)  math 



Abstract:  I will present a new theory of motivic cohomology for general (qcqs) schemes. It is related to nonconnective algebraic Ktheory via an AtiyahHirzebruch spectral sequence. In particular, it is nonA^1invariant in general, but it recovers classical motivic cohomology on smooth schemes over a Dedekind domain after A^1localisation. The construction relies on the syntomic cohomology of BhattMorrowScholze and the cdhlocal motivic cohomology of BachmannElmantoMorrow, and generalises the construction of ElmantoMorrow in the case of schemes over a field. 
Thursday 18 January 2024, 11:00 at LPTHE, Library  SEMDARBOUX (Séminaire Darboux  physique théorique et mathématiques)  math.QA 


Thursday 18 January 2024, 14:00 at LPTMC, ????  SEMEXCEP (Seminaire exceptionnel)  condmat 



Abstract:  TBA 
Friday 19 January 2024, 10:15 at
IHES,
Amphithéâtre Léon Motchane ( Cours de l'IHES : https://www.ihes.fr/evenements/#cours )  MATHIHES (TBA)  math 



Abstract:  The purpose of this course is to propose new foundations for analytic geometry. The topics covered are as follows: 1. Light condensed abelian groups. 2. Analytic rings. 3. Analytic stacks. 4. Examples. 
Monday 22 January 2024, 13:30 at LPENS, U207 (29 rue d'Ulm)  LPENSMDQ (Séminaire Matériaux et Dispositifs Quantiques du LPENS)  condmat 


Tuesday 23 January 2024, 11:00 at LPTMS, Salle des séminaires du FAST et du LPTMS, bâtiment Pascal n°530  LPTMS (Séminaire du Laboratoire de Physique Théorique et Modèles Statistiques (Orsay))  condmat.statmech 


Wednesday 24 January 2024, 10:15 at
IHES,
Amphithéâtre Léon Motchane ( Cours de l'IHES : https://www.ihes.fr/evenements/#cours )  MATHIHES (TBA)  math 



Abstract:  The purpose of this course is to propose new foundations for analytic geometry. The topics covered are as follows: 1. Light condensed abelian groups. 2. Analytic rings. 3. Analytic stacks. 4. Examples. 
Thursday 25 January 2024, 11:00 at IHES, Amphithéâtre Léon Motchane  MATHIHES (TBA)  math 



Abstract:  The notion of pseudorepresentations was initially introduced for group algebras by Wiles (for GL_2) and by Taylor (for GL_d) in order to construct Galois representations associated to certain automorphic forms. Chenevier proposed an alternative theory of "determinant laws" which extends Wiles and Taylor’s definition to arbitrary rings. This theory has proved to be useful in the study of congruences between automorphic forms and in the deformation theory of residually reducible Galois representations.  In this talk, I will present my joint work with Julian Quast on symplectic determinant laws, which adapts Chenevier’s framework to the symplectic group GSp_2d. I will give the definition and highlight some of its key properties, and then explain its connection to Geometric Invariant Theory. In particular, I will show that in characteristic zero, the space of symplectic determinant laws recovers the GIT quotient of the space of symplectic representations by the conjugation action. 
Friday 26 January 2024, 10:15 at
IHES,
Amphithéâtre Léon Motchane ( Cours de l'IHES : https://www.ihes.fr/evenements/#cours )  MATHIHES (TBA)  math 



Abstract:  The purpose of this course is to propose new foundations for analytic geometry. The topics covered are as follows: 1. Light condensed abelian groups. 2. Analytic rings. 3. Analytic stacks. 4. Examples. 
Tuesday 30 January 2024, 11:00 at LPTMS, Salle des séminaires du FAST et du LPTMS, bâtiment Pascal n°530  LPTMS (Séminaire du Laboratoire de Physique Théorique et Modèles Statistiques (Orsay))  condmat.statmech 



Abstract:  In phases of condensed matter with broken continuous symmetries, as well as in fluids, transport processes generate irreversibility at the macroscale. To be complete, the hydrodynamic equations must include these dissipative effects. A fundamental question is to deduce all of them from the microscopic Hamiltonian dynamics of the particles with the methods of nonequilibrium statistical mechanics. In this presentation, a firstprinciple derivation based on a localequilibrium approach is introduced. As an example of application, the crystalline solid is considered. The breaking of the threedimensional continuous group of spatial translations implies the existence of three slow modes in addition to the five slow modes arising from the fundamental conservation laws of mass, energy, and linear momentum. Finally, based on the results of the localequilibrium approach, the equilibrium and nonequilibrium properties relevant to the hydrodynamics of the perfect hardsphere crystal are obtained with molecular dynamics simulations. 
Wednesday 31 January 2024, 10:15 at
IHES,
Amphithéâtre Léon Motchane ( Cours de l'IHES : https://www.ihes.fr/evenements/#cours )  MATHIHES (TBA)  math 



Abstract:  The purpose of this course is to propose new foundations for analytic geometry. The topics covered are as follows: 1. Light condensed abelian groups. 2. Analytic rings. 3. Analytic stacks. 4. Examples. 
Friday 2 February 2024, 10:15 at
IHES,
Amphithéâtre Léon Motchane ( Cours de l'IHES : https://www.ihes.fr/evenements/#cours )  MATHIHES (TBA)  math 



Abstract:  The purpose of this course is to propose new foundations for analytic geometry. The topics covered are as follows: 1. Light condensed abelian groups. 2. Analytic rings. 3. Analytic stacks. 4. Examples. 
Monday 5 February 2024, 13:30 at LPENS, U209 (29 rue d'Ulm)  LPENSMDQ (Séminaire Matériaux et Dispositifs Quantiques du LPENS)  condmat 



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