252 citations · 1.5k across the 51 of their papers we have counts for
5 papers · 1 filter
On the perturbed Friedmann equations in Newtonian Gauge
Jaume de Haro, Emilio Elizalde, Supriya Pan
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 i…
Gravitational reheating formulas and bounds in oscillating backgrounds
Jaume de Haro, Llibert Aresté Saló, Supriya Pan
In this article we calculate the reheating temperature in the cosmological scenarios where heavy scalar particles are gravitationally produced, due to a conformally coupled interac…
Gravitational reheating formulas and bounds in oscillating backgrounds II: Constraints on the spectral index and gravitational dark matter production
Jaume de Haro, Supriya Pan
The reheating temperature plays a crucial role in the early universe's evolution, marking the transition from inflation to the radiation-dominated era. It directly impacts the numb…
Relations between Newtonian and relativistic cosmology
Jaume de Haro
We start with the cosmic Friedmann equations, where we adopt a novel perspective rooted in a Lagrangian formulation grounded in Newtonian mechanics and the first law of thermodynam…
Phase space analysis of sign-shifting interacting dark energy models
Sudip Halder, Jaume de Haro, Tapan Saha +1
The theory of non-gravitational interaction between a pressure-less dark matter (DM) and dark energy (DE) is a phenomenologically rich cosmological domain which has received magnif…