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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 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)) | cond-mat.stat-mech |
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| Friday 15 December 2023, 10:15 at
IHES,
Amphithéâtre Léon Motchane ( Cours de l'IHES : https://www.ihes.fr/evenements/#cours ) | MATH-IHES (TBA) | math |
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| 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)) | cond-mat.stat-mech |
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| Monday 18 December 2023, 11:00 at IPHT, Salle Claude Itzykson, Bât. 774 | IPHT-PHM (Séminaire de physique mathématique) | math-ph |
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| 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 low-temperature 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 Kibble-Zurek scaling theory whenever such a comparison is possible. Based on a recent work in collaboration with Claude Godrèche. | |
| 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)) | cond-mat.stat-mech |
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| Tuesday 19 December 2023, 14:00 at IMO, Online-only. Zoom link by subscribing at https://seedseminar.apps.math.cnrs.fr/ | SEED (Seed Seminar of Mathematics and Physics) | math-ph |
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| Wednesday 20 December 2023, 10:00 at IPHT, Salle Claude Itzykson, Bât. 774 | IPHT-SEM (Séminaire du IPHT) | physics |
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| 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 ) | MATH-IHES (TBA) | math |
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| 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 | FORUM-ENS (Forum de Physique Statistique @ ENS) | cond-mat.stat-mech |
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| Abstract: | TBA | |
| Friday 22 December 2023, 10:15 at
IHES,
Amphithéâtre Léon Motchane ( Cours de l'IHES : https://www.ihes.fr/evenements/#cours ) | MATH-IHES (TBA) | math |
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| 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) | LPENS-MDQ (Séminaire Matériaux et Dispositifs Quantiques du LPENS) | cond-mat |
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| Tuesday 9 January 2024, 14:00 at LPTMS, LPTMS seminar room | LPTMS (Séminaire du Laboratoire de Physique Théorique et Modèles Statistiques (Orsay)) | cond-mat.stat-mech |
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| Wednesday 10 January 2024, 10:15 at
IHES,
Amphithéâtre Léon Motchane ( Cours de l'IHES : https://www.ihes.fr/evenements/#cours ) | MATH-IHES (TBA) | math |
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| 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) | RENC-THEO (Rencontres Théoriciennes) | hep-th |
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| Friday 12 January 2024, 10:15 at
IHES,
Amphithéâtre Léon Motchane ( Cours de l'IHES : https://www.ihes.fr/evenements/#cours ) | MATH-IHES (TBA) | math |
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| 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)) | cond-mat.stat-mech |
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| Wednesday 17 January 2024, 10:15 at
IHES,
Amphithéâtre Léon Motchane ( Cours de l'IHES : https://www.ihes.fr/evenements/#cours ) | MATH-IHES (TBA) | math |
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| 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 | MATH-IHES (TBA) | math |
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| Abstract: | I will present a new theory of motivic cohomology for general (qcqs) schemes. It is related to non-connective algebraic K-theory via an Atiyah-Hirzebruch spectral sequence. In particular, it is non-A^1-invariant in general, but it recovers classical motivic cohomology on smooth schemes over a Dedekind domain after A^1-localisation. The construction relies on the syntomic cohomology of Bhatt-Morrow-Scholze and the cdh-local motivic cohomology of Bachmann-Elmanto-Morrow, and generalises the construction of Elmanto-Morrow in the case of schemes over a field. | |
| Thursday 18 January 2024, 11:00 at LPTHE, Library | SEM-DARBOUX (Séminaire Darboux - physique théorique et mathématiques) | math.QA |
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| Thursday 18 January 2024, 14:00 at LPTMC, ???? | SEM-EXCEP (Seminaire exceptionnel) | cond-mat |
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| Abstract: | TBA | |
| Friday 19 January 2024, 10:15 at
IHES,
Amphithéâtre Léon Motchane ( Cours de l'IHES : https://www.ihes.fr/evenements/#cours ) | MATH-IHES (TBA) | math |
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| 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) | LPENS-MDQ (Séminaire Matériaux et Dispositifs Quantiques du LPENS) | cond-mat |
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| 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)) | cond-mat.stat-mech |
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| Wednesday 24 January 2024, 10:15 at
IHES,
Amphithéâtre Léon Motchane ( Cours de l'IHES : https://www.ihes.fr/evenements/#cours ) | MATH-IHES (TBA) | math |
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| 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 | MATH-IHES (TBA) | math |
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| Abstract: | The notion of pseudo-representations 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 ) | MATH-IHES (TBA) | math |
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| 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)) | cond-mat.stat-mech |
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| 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 non-equilibrium statistical mechanics. In this presentation, a first-principle derivation based on a local-equilibrium approach is introduced. As an example of application, the crystalline solid is considered. The breaking of the three-dimensional 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 local-equilibrium approach, the equilibrium and nonequilibrium properties relevant to the hydrodynamics of the perfect hard-sphere 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 ) | MATH-IHES (TBA) | math |
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| 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 ) | MATH-IHES (TBA) | math |
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| 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) | LPENS-MDQ (Séminaire Matériaux et Dispositifs Quantiques du LPENS) | cond-mat |
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