Zobrazeno 1 - 2
of 2
pro vyhledávání: '"Uskov, Filipp"'
We present an expansion of a many-body correlation function in a sum of pseudomodes - exponents with complex frequencies that encompass both decay and oscillations. We demonstrate that, typically, it is enough to take a few first terms of this infini
Externí odkaz:
http://arxiv.org/abs/2407.12495
Autor:
Uskov, Filipp, Lychkovskiy, Oleg
Publikováno v:
Phys. Rev. B 109, L140301 (2024)
We report an implementation of the recursion method that addresses quantum many-body dynamics in the nonperturbative regime. The method essentially amounts to constructing a Lanczos basis in the space of operators and solving coupled Heisenberg equat
Externí odkaz:
http://arxiv.org/abs/2401.17211