activity
19982026
most citedViscous dark energy and phantom evolution

156 citations · 1.2k across the 78 of their papers we have counts for

collaborators

80 papers

gr-qc2026

The logotropic dark fluid as an energy diffusion in unimodular gravity

Miguel Cruz, Samuel Lepe

We show that the logotropic dark fluid, proposed as a single-fluid unification of dark matter and dark energy, is exactly dissipative unimodular gravity with pressureless matter an…

gr-qc2026

Matter Creation in Unimodular Gravity Cosmology

Víctor H. Cárdenas, Miguel Cruz, Samuel Lepe

We investigate matter creation in the cosmological framework of unimodular gravity. We keep the energy density , pressure , particle number density , and particle number $…

gr-qc2026

Does spatial curvature generate new thermodynamic criticality at the FLRW apparent horizon?

Samuel Lepe, Joel Saavedra

We generalize the apparent-horizon thermodynamic construction of [1] to a FLRW universe with non-zero spatial curvature, non-interacting cold dark matter and holographic-type dark…

gr-qc2026

Kaniadakis Holographic Dark Energy: UVIR Duality, Horizon Thermodynamics and Cosmological Constraints

Manuel Gonzalez-Espinoza, Samuel Lepe, Joel F. Saavedra +1

We investigate the cosmological and thermodynamic implications of holographic dark energy derived from the Kaniadakis deformation of the Bekenstein--Hawking entropy. In a spatially…

gr-qc2025

The holographic origin of future singularities and the role of spatial curvature in cosmic expansion

Miguel Cruz, Samuel Lepe, Joel Saavedra

We investigate the fundamental cosmological implications of holographic dark energy using the Granda-Oliveros (GO) infrared cutoff, spatial curvature, and generalized entropies. We…

gr-qc2025

First-order phase transitions and cosmic evolution: thermodynamic approach to generalized holographic dark energy

Miguel Cruz, Joaquin Housset, Samuel Lepe +2

Focusing on the description of cosmic evolution at late times, this study examines a generalized holographic dark energy (HDE) framework constructed via a polynomial expansion in t…