Joint ICTP/SISSA Statistical Physics Seminar, 27 October at 11:00am, by L. Vidmar

[CMSP Seminars Secretariat]

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Joint ICTP/SISSA Statistical Physics Seminar
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** * * Monday 27 October**2025, 11:00**am ***(CET)** * **
*Euler Lecture Hall **(Leonardo Building)***
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/Zoom: https://zoom.us/meeting/register/abGz5egmTe25tpVQ7mFBTg/

Speaker:* Lev Vidmar *(Jožef Stefan Institute and University of Ljubljana)

Title: *Fading ergodicity**
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Abstract:

Recent decades of research contributed significantly to our 
understanding how an interacting quantum system, evolving in isolation 
from environment, approaches a thermal equilibrium. The process in which 
the expectation values of observables after a long time approach 
predictions from the thermal Gibbs ensembles is called thermalization, 
and the state of the system is referred to as being ergodic. The 
mechanism of thermalization is today understood via the eigenstate 
thermalization hypothesis, which states that all eigenstates of a 
Hamiltonian are already thermal. I will discuss counterexamples to 
thermalization. In particular, I will comment on our recent proposal of 
the regime of ”fading ergodicity”, which acts as a precursor of the 
ergodicity breaking phase transition.