Data: February 07,
Ordua: 11:40
Lekua: Aula 1.A1

“Decoherence and Thermalisation of gauge theories"
Andreas Schaefer (Regensburg, Germany)

ABSTRACT
Decoherence and thermalisation of isolated many-particle quantum states are studied in many different subfields of physics, including high-energy physics. One of the most interesting case are Heavy Ion Collisions which can be holographically connected to string theory in Anti-de Sitter space and for which very detailed data exists. After a general introduction, I will focus on the question of whether SU(N) gauge theories behave as predicted by the Eigenstate Thermalization Hypothesis (ETH). To answer this question we have performed simulations for low-dimensional SU(2) gauge theories on digital computers (arXiv: 2308.16202) which gave encouraging results. As ETH makes predictions for energy eigenstates the most natural theoretical approach to study e.g. thermalization of QCD is the numerical simulation of Hamiltonian lattice QCD on quantum computers which, however, is not yet possible. Investigating the validity of ETH on digital computers is an early step in this direction.

SHORT BIO 
Prof. Dr. Andreas Schäfer is a distinguished physicist born in Frankfurt, Germany, in 1957. Throughout his career, Dr. Schäfer has garnered numerous accolades, including the Tolman Prize Fellowship at CALTECH, Pasadena, in 1986-88, and the Heisenberg Prize from the Deutsche Forschungsgemeinschaft (DFG) in 1989. He became a Professor in Frankfurt in 1991, earning the G. Hess Prize from the DFG.
Over the years, Dr. Schäfer held various prestigious roles, including being an external member of the Max-Planck-Institut for Nuclear Physics in Heidelberg from 1991-01, and a Professor in Regensburg from 1997. Notably, he served as Dean of Studies in the Faculty of Physics and chaired the section 'Hadrons and Nuclei' of the German Physical Society.
Dr Schäfer's contributions extend beyond academia, as seen in his roles such as a Member of the Scientific Committee on Nuclear and Hadron Physics for the German Ministry of Research and Education (BMBF) from 1996-05 and his tenure as Panel Chair for a prioritization committee of PRACE (Partnership for Advanced Computing in Europe) from 2008-14.
With a wealth of experience and a distinguished track record, Dr. Andreas Schäfer continues to make substantial contributions to the field of physics.