Revisiting geodesic observers in cosmology
نویسندگان
چکیده
Geodesic observers in cosmology are revisited. The coordinates based on freely falling introduced by Gautreau de Sitter and Einstein-de spaces (and, previously, Hoffmann Schwarzschild space) extended to general FLRW universes. We identify situations which the relation between geodesic comoving can be expressed explicitly terms of elementary functions. In general, turn out rather cumbersome limited region below apparent horizon.
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ژورنال
عنوان ژورنال: European Physical Journal C
سال: 2021
ISSN: ['1434-6044', '1434-6052']
DOI: https://doi.org/10.1140/epjc/s10052-021-09636-1