Entanglement dynamics for Unruh-DeWitt detectors interacting with massive scalar fields: the Unruh and anti-Unruh effects

Journal of High Energy Physics

Jiawei Hu¹  Hongwei Yu¹  Yuebing Zhou² 

[1] Department of Physics and Synergetic Innovation Center for Quantum Effects and Applications, Hunan Normal University, 36 Lushan Rd., 410081, Changsha, Hunan, China;Department of Physics and Synergetic Innovation Center for Quantum Effects and Applications, Hunan Normal University, 36 Lushan Rd., 410081, Changsha, Hunan, China;Department of Physics, Huaihua University, 180 Huaidong Rd., 418008, Huaihua, Hunan, China;

关键词: Models of Quantum Gravity;    Quantum Dissipative Systems;    Thermal Field Theory;   

DOI  :  10.1007/JHEP09(2021)088

来源: Springer

【 摘 要 】

We study, in the framework of open quantum systems, the entanglement dynamics for a quantum system composed of two uniformly accelerated Unruh-Dewitt detectors interacting with a bath of massive scalar fields in the Minkowski vacuum. We find that the entanglement evolution for the quantum system coupled with massive fields is always slower compared with that of the one coupled with massless fields, and this time-delay effect brought about by the field being massive can however be counteracted by a large enough acceleration, in contrast to the case of a static quantum system in a thermal bath, where this time delay is not affected by the temperature. Remarkably, the maximal concurrence of the quantum system generated during evolution may increase with acceleration for any inter-detector separation while that for static ones in a thermal bath decreases monotonically with temperature, and this can be considered as an anti-Unruh effect in terms of the entanglement generated.

【 授权许可】

CC BY