Loschmidt-amplitude wave function spectroscopy and the physics of dynamically driven phase transitions
Statistical Mechanics
2020-02-19 v2 Quantum Gases
Strongly Correlated Electrons
Quantum Physics
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.
Keywords
Cite
@article{arxiv.1809.00733,
title = {Loschmidt-amplitude wave function spectroscopy and the physics of dynamically driven phase transitions},
author = {D. M. Kennes and C. Karrasch and A. J. Millis},
journal= {arXiv preprint arXiv:1809.00733},
year = {2020}
}
Comments
4.5 pages + SM, 5 + 3 figures, accepted version