2008/06/08 by Daniel Arteaga
Physics and Astronomy · #Adiabatic process #Atom (system on chip) #Cosmology #Cosmology and Gravitation Theories #Dark Matter and Cosmic Phenomena #Dissipative system #Field (mathematics) #Particle (ecology) #Quantum Electrodynamics and Casimir Effect #Quantum cosmology #Quantum field theory #gr-qc #hep-ph
paper · pdf · doi:10.1088/0264-9381/25/15/154014
published as Class.Quant.Grav.25:154014,2008 · 20 pages, 2 figures. A contribution to the Proceedings of the International Workshop on Cosmology and Gravitation, Peyresq 12, June 16-22, 2007, Peyresq, France. Accepted for publication in Clas. Quant. Grav
arxiv created 2008/06/08 · openalex publication_date 2008/07/22 · arxiv updated 2009/12/01 · openalex created_date 2019/06/27 · openalex updated_date 2026/08/05
We explore the adiabatic particle excitations of an interacting field in a cosmological background. By following the time-evolution of the quantum state corresponding to the particle excitation, we show how the basic properties characterizing the particle propagation can be recovered from the two-point propagators. As an application, we study the background-induced dissipative effects on the propagation of a two-level atom in an expanding universe.