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cond-mat.str-el2026
Resonant level model from a Krylov perspective: Lanczos coefficients in a quadratic model
Merlin Füllgraf, Jiaozi Wang, Jochen Gemmer +1
We study the Lanczos coefficients in a quadratic model given by an impurity interacting with a multi-mode field of fermions, also known as resonant level model. We analytically der…
cond-mat.str-el2024★ 4 cited
Thermalization of a Closed Sachdev-Ye-Kitaev System in the Thermodynamic Limit
Santiago Salazar Jaramillo, Rishabh Jha, Stefan Kehrein
The question of thermalization of a closed quantum system is of central interest in non-equilibrium quantum many-body physics. Here we present one such study analyzing the dynamics…
cond-mat.str-el2024★ 2 cited
Current Correlations and Conductivity in SYK-Like Systems: An Analytical Study
Rishabh Jha, Stefan Kehrein, Jan C. Louw
We present a functional-based approach to compute thermal expectation values for actions expressed in the formalism, applicable to any time sequence ordering. Utilizing this…