Exploring chaos in Dicke Model using ground state fidelity and Loschmidt echo
Statistical Mechanics
2014-12-22 v1 Quantum Physics
Abstract
We study the quantum critical behaviour of the Dicke Hamiltonian, with finite number of atoms and explore the signature of quantum chaos using measures like the ground state fidelity and the Loschmidt echo. We show that both these quantities clearly point to the chaotic nature of the system in the super-radiant phase.
Cite
@article{arxiv.1404.6738,
title = {Exploring chaos in Dicke Model using ground state fidelity and Loschmidt echo},
author = {Utso Bhattacharya and Sayak Dasgupta and Amit Dutta},
journal= {arXiv preprint arXiv:1404.6738},
year = {2014}
}
Comments
7 pages, 8 figures