On the perturbed Friedmann equations in Newtonian Gauge

Autor:	de Haro, Jaume, Elizalde, Emilio, Pan, Supriya
Rok vydání:	2024
Předmět:	General Relativity and Quantum Cosmology Astrophysics - Cosmology and Nongalactic Astrophysics Mathematical Physics
Druh dokumentu:	Working Paper
Popis:	Based on the Newtonian mechanics, in this article, we present a heuristic derivation of the Friedmann equations, providing an intuitive foundation for these fundamental relations in cosmology. Additionally, using the first law of thermodynamics and Euler's equation, we derive a set of equations that, at linear order, coincide with those obtained from the conservation of the stress-energy tensor in General Relativity. This approach not only highlights the consistency between Newtonian and relativistic frameworks in certain limits but also serves as a pedagogical bridge, offering insights into the physical principles underlying the dynamics of the universe. Comment: updated version; ~11 pages including references; comments are welcome
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/2412.15139 Zobrazit plný text záznamu View this record from Arxiv