Asymptotic States of Accelerated Qubits with Nonzero Background Temperature

Abstract

The study of the Unruh effect naturally raises the interest for a deeper understanding of the analogy between temperature and acceleration. A recurring question is whether an accelerated frame can be distinguished from an inertial thermal bath in pure thermodynamic experiments, such problem has been approached in the literature and a consensus is yet to be fully reached. In the present work we use the open quantum system formalism to investigate the case where both acceleration and background temperature are present. We find the asymptotic state density and entanglement generation from the Markovian evolution of accelerated qubits interacting with a thermal state of the external scalar field. Our results suggest that there is a very small asymmetry on the effects of the Unruh and background temperatures. Addressing the nonzero background temperature case is of both theoretical and phenomenological interest, thus the authors hope to enrich the existing discussions on the topic.

arXiv comment5 figures(3 captioned). An improved version of this preprint has been accepted for publication in PRD on May 28, 2020

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• Role of thermal field in entanglement harvesting between two accelerated Unruh-DeWitt detectors
• Entanglement harvesting between two inertial Unruh-DeWitt detectors from non-vacuum quantum fluctuations
• Entanglement generation for uniformly accelerated atoms assisted by environment-induced interatomic interaction and the loss of the anti-Unruh effect
• Entanglement harvesting of accelerated detectors versus static ones in a thermal bath
• Anti-Unruh effect in the thermal background
• Entanglement dynamics for atoms near a reflecting boundary: Enhancement and suppression by environment-induced interactions