Scalar quantum fields in cosmologies with <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mn>2</mml:mn><mml:mo>+</mml:mo><mml:mn>1</mml:mn></mml:math> spacetime dimensions
نویسندگان
چکیده
Motivated by the possibility to use Bose-Einstein condensates as quantum simulators for spacetime curvature, we study a massless relativistic scalar field in spatially curved Friedmann-Lema\^itre-Robertson-Walker universes with $d=2+1$ dimensions. In particular, investigate particle production caused time-dependent background geometry, means of spectrum fluctuations and several two-point correlation functions. We derive new analytical results expansion scenarios.
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ژورنال
عنوان ژورنال: Physical review
سال: 2022
ISSN: ['0556-2813', '1538-4497', '1089-490X']
DOI: https://doi.org/10.1103/physrevd.105.105020