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- Title
Some speculations about local thermalization of nonequilibrium extended quantum systems.
- Authors
Coppola, M.; Karevski, D.
- Abstract
We discuss the possibility of defining an emergent local temperature in extended quantum many-body systems evolving out of equilibrium. For the most simple case of free-fermionic systems, we give an explicit formula for the effective temperature in the case of, not necessarily unitary, Gaussian preserving dynamics. In this framework, we consider the hopping fermions on a one-dimensional lattice submitted to randomly distributed projective measurements of the local occupation numbers. We show from the average over many quantum trajectories that the effective temperature relaxes exponentially towards infinity.
- Subjects
THERMAL neutrons; QUANTUM trajectories; NONEQUILIBRIUM statistical mechanics
- Publication
Condensed Matter Physics, 2023, Vol 26, Issue 1, p1
- ISSN
1607-324X
- Publication type
Article
- DOI
10.5488/CMP.26.13502