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arXiv · 1510.02424

Spreading of correlations and Loschmidt echo after quantum quenches of a Bose gas in the Aubry-André potential

Nicola Lo Gullo·Luca Dell'Anna
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Abstract

We study the spreading of density-density correlations and the Loschmidt echo, after different sudden quenches in an interacting one dimensional Bose gas on a lattice, also in the presence of a superimposed aperiodic potential. We use a time dependent Bogoliubov approach to calculate the evolution of the correlation functions and employ the linked cluster expansion to derive the Loschmidt echo.

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Nicola Lo Gullo, Luca Dell'Anna. 2015-12-21. Spreading of correlations and Loschmidt echo after quantum quenches of a Bose gas in the Aubry-André potential. https://doi.org/10.1103/physreva.92.063619

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