Scalar quantum fields in cosmologies with 2+1 spacetime dimensions

Autor:	Natalia Sánchez-Kuntz, Álvaro Parra-López, Mireia Tolosa-Simeón, Tobias Haas, Stefan Floerchinger
Rok vydání:	2022
Předmět:	General Relativity and Quantum Cosmology Quantum Gases (cond-mat.quant-gas) FOS: Physical sciences General Relativity and Quantum Cosmology (gr-qc) Condensed Matter - Quantum Gases
DOI:	10.48550/arxiv.2202.10440
Popis:	Motivated by the possibility to use Bose-Einstein condensates as quantum simulators for spacetime curvature, we study a massless relativistic scalar quantum field in spatially curved Friedmann-Lema\^itre-Robertson-Walker universes with $d=2+1$ spacetime dimensions. In particular, we investigate particle production caused by a time-dependent background geometry, by means of the spectrum of fluctuations and several two-point field correlation functions. We derive new analytical results for several expansion scenarios. Comment: 17 pages, 6 figures
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ab9a6261a0752f9b44d12b4713111763 Zobrazit plný text záznamu