Quantum thermodynamics and quantum entanglement entropies in an expanding universe
| Autor: | Hosein Mohammadzadeh, Hossein Mehri-Dehnavi, Mehrnoosh Farahmand |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
Physics
Quantum Physics Nuclear and High Energy Physics Quantum field theory in curved spacetime Quantum decoherence 010308 nuclear & particles physics FOS: Physical sciences Astronomy and Astrophysics General Relativity and Quantum Cosmology (gr-qc) Von Neumann entropy Quantum entanglement 01 natural sciences General Relativity and Quantum Cosmology Atomic and Molecular Physics and Optics Metric expansion of space Entropy (classical thermodynamics) Theoretical physics 0103 physical sciences Quantum Physics (quant-ph) 010306 general physics Quantum thermodynamics Scalar field |
| Zdroj: | International Journal of Modern Physics A. 32:1750066 |
| ISSN: | 1793-656X 0217-751X |
| Popis: | 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. 10 pages, 11 figures |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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