Hierarchy of double-time correlations
Hierarchy of double-time correlations
Queißer, F.; Schützhold, R.
The hierarchy of correlations is an analytical approximation method which allows us to study non-equilibrium phenomena in strongly interacting quantum many-body systems on lattices in higher dimensions. So far, this method was restricted to equal-time correlators ⟨A ^ μ (t)B ^ ν (t)⟩ . In this work, we generalize this method to double-time correlators ⟨A ^ μ (t)B ^ ν (t ′ )⟩ , which allows us to study effective light cones and Green functions and to incorporate finite initial temperatures.
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Contribution to WWW
arXiv:1909.10938: https://arxiv.org/abs/1909.10938 -
Journal of Statistical Mechanics: Theory and Experiment 5(2023), 053101
DOI: 10.1088/1742-5468/acccde
Cited 1 times in Scopus
Permalink: https://www.hzdr.de/publications/Publ-29916