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arXiv · 1809.00733

Loschmidt-amplitude wave function spectroscopy and the physics of dynamically driven phase transitions

D. M. Kennes·C. Karrasch·A. J. Millis
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Abstract

We introduce the Loschmidt amplitude as a powerful tool to perform spectroscopy of generic many-body wave functions and use it to interrogate the wave function obtained after ramping the transverse field quantum Ising model through its quantum critical point. Previous results are confirmed and a more complete understanding of the population of defects and of the effects of magnon-magnon interaction or finite-size corrections is obtained. The influence of quantum coherence is clarified.

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BibTeXRIS

D. M. Kennes, C. Karrasch, A. J. Millis. 2018-09-03. Loschmidt-amplitude wave function spectroscopy and the physics of dynamically driven phase transitions. https://doi.org/10.1103/physrevb.101.081106

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