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Quantum Simulation Quantum Thermodynamics

Work and Quantum Phase Transitions: Is there Quantum Latency?

arXiv

Authors: E. Mascarenhas, H. Braganca, R. Dorner, M. Franca Santos, V. Vedral, K. Modi, J. Goold

Year

2013

Paper ID

33597

Status

Preprint

Abstract Read

~2 min

Abstract Words

102

Citations

N/A

Abstract

We study the physics of quantum phase transitions from the perspective of non-equilibrium thermodynamics. For first order quantum phase transitions, we find that the average work done per quench in crossing the critical point is discontinuous. This leads us to introduce the quantum latent work in analogy with the classical latent heat of first order classical phase transitions. For second order quantum phase transitions the irreversible work is closely related to the fidelity susceptibility for weak sudden quenches of the system Hamiltonian. We demonstrate our ideas with numerical simulations of first, second, and infinite order phase transitions in various spin chain models.

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This paper contributes to the Quantum Simulation research area in the Quantum Articles archive.
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We study the physics of quantum phase transitions from the perspective of non-equilibrium thermodynamics.

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References & Citation Signals

[1] DOI https://doi.org/arXiv:1307.5544 [2] arXiv https://arxiv.org/abs/1307.5544 [3] Publisher https://arxiv.org/abs/1307.5544

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