Symmetry breaking and symmetry preserving schemes

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May 13-17th



Symmetry breaking and symmetry preserving schemes : how to efficiently grasp collective correlations in mesoscopic many-body systems?


Organizers: J.P Ebran (CEA, DAM), T. Duguet (CEA DPhN), V. Somà (DPhN, contact) A. Tichai (ESNT, contact)


The goals of the workshop are:
1. To review the various state of the art approaches developed to tackle the many-body problem;
2. To put in vis-a-vis the symmetry-preserving and symmetry-unrestricted approaches;
3. To transfer the know-how of techniques specific to one or the other of the two strategies in order to build new hybrid approaches.



Exposés -TALKS- Invited speakers


Introductory Lectures
1. E. Castellani, Emergent symmetry breaking in finite quantum systems: philosophical aspects
2. J.P. Draayer, Basic elements of group theory in quantum mechanics
3. L. M. Robledo, Fundamentals of symmetry breaking and restoration
4. T. Duguet, Breaking and restoring symmetries beyond the mean-field.


Scientific talks

1. Energy density functional (EDF) and Shell-Model (SM) methods

 B. Bally, State-of-the-art multi-reference EDF calculations. I. Odd systems
 L. Egido, State-of-the-art multi-reference EDF calculations. II. Shape and pairing fluctuations
 M. Bender, CENBG, Spuriousities in the multi-reference EDF formalism
 N. Pillet, CEA DAM, Symmetry-conserving multi-particle/multi-hole calculations
 J.-P. Ebran, CEA DAM, Symmetry considerations in the relativistic EDF method
 A. Poves, SM far from stability
 A. Gorling, Symmetry in density functional theory


2. Ab initio many-body methods

 H. Hergert, Multi-reference in-medium similarity renormalization group theory
 G. Scuseria, Angular-momentum-projected coupled cluster theory
 C. Yannouleas, Symmetry breaking and restoration for ring-trapped ions and neutral atoms
 T. Papenbrock, Effective field theory of emergent rotational symmetry breaking in nuclei
 U. Meissner, Angular-momentum restoration in lattice EFT calculations
 V. Somà, CEA Saclay, Particle-number breaking self-consistent Gorkov Green’s function calculations
 S. R. Stroberg, Valence-space calculations from the in-medium similarity renormalization group
 M. Veis, Hartree-Fock and many-body perturbation theory for periodic helical systems
 A. Tichai, CEA-Saclay, ESNT, Particle-number-projected Bogoliubov many-body perturbation theory
 J. Ripoche, CEA, Symmetry-broken and -restored truncated configuration interaction calculations
 J.P. Draayer, Symmetry-adapted no-core shell model
 C. Robin, CEA-DAM, Single-particle relaxation effects from the multi-particle-multi-hole configuration mixing approach










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Création-contact Web ESNT : Valérie Lapoux

#82 - Mise à jour : 18/01/2019
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