Quantum Thermodynamics and Quantum Entanglement Entropies in an Expanding Universe
Quantum Physics
2017-06-21 v1 General Relativity and Quantum Cosmology
Abstract
We investigate an asymptotically spatially flat Robertson-Walker spacetime from two different perspectives. First, using von Neumann entropy, we evaluate the entanglement generation due to the encoded information in spacetime. Then, we work out the entropy of particle creation based on the quantum thermodynamics of the scalar field on the underlying spacetime. We show that the general behavior of both entropies are the same. Therefore, the entanglement can be applied to the customary quantum thermodynamics of the universe. Also, using these entropies, we can recover some information about the parameters of spacetime.
Keywords
Cite
@article{arxiv.1610.00537,
title = {Quantum Thermodynamics and Quantum Entanglement Entropies in an Expanding Universe},
author = {Mehrnoosh Farahmand and Hosein Mohammadzadeh and Hossein Mehri-Dehnavi},
journal= {arXiv preprint arXiv:1610.00537},
year = {2017}
}
Comments
10 pages, 11 figures