25 citations · 34 across the 9 of their papers we have counts for
9 papers
Singularity softening and avoidance by the action of thermal radiation in a generalized entropic cosmology
E. Elizalde, A. V. Yurov, A. V. Timoshkin
Some relevant aspects of a new form of generalized entropic cosmology, recently introduced by Nojiri, Odintsov and Faraoni, are considered. The setup is a logarithmic equation of s…
Recovering Einstein Mature View of Gravitation: A Dynamical Reconstruction Grounded in the Equivalence Principle
Jaume de Haro, Emilio Elizalde
The historical and conceptual foundations of General Relativity are revisited, putting the main focus on the physical meaning of the invariant ds, the Equivalence Principle, and th…
Is Gravity Truly Balanced? A Historical-Critical Journey Through the Equivalence Principle and the Genesis of Spacetime Geometry
Jaume de Haro, Emilio Elizalde
We present a novel derivation of the spacetime metric generated by matter, without invoking Einstein's field equations. For static sources, the metric arises from a relativistic fo…
On the Geometric Meaning of General Relativity and the Foundations of Newtonian Cosmology
Jaume de Haro, Emilio Elizalde
The geometric foundations of General Relativity are revisited, with particular attention to its gauge invariance, as a key to understanding the true nature of spacetime. Beyond the…
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…
Holographic bounce cosmological models induced by viscous dark fluid from a generalized non-singular entropy function
E. Elizalde, A. V. Yurov, A. V. Timoshkin
Bounce cosmological models containing a dark viscous fluid in a spatially flat Friedmann-Robertson-Walker (FRW) universe are considered. The universe evolution is described in term…
Can we learn from matter creation to solve the tension problem?
Emilio Elizalde, Martiros Khurshudyan, Sergei D. Odintsov
The tension problem is studied in the light of a matter creation mechanism (an effective approach to replacing dark energy), the way to define the matter creation rate bein…
Constraints on prospective deviations from the cold dark matter model using a Gaussian Process
Martiros Khurshudyan, Emilio Elizalde
Recently, using Bayesian Machine Learning, a deviation from the cold dark matter model on cosmological scales has been put forward. Such model might replace a proposed non-gravitat…
Cosmological model involving an interacting van der Waals fluid
E. Elizalde, M. Khurshudyan
A model for the late-time accelerated expansion of the universe is considered where a van der Waals fluid interacting with matter plays the role of dark energy. The transition towa…