8 citations · 12 across the 14 of their papers we have counts for
14 papers
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…
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 $…
Thermodynamic Criticality in FLRW Cosmology with Non-extensive Loop Quantum Gravity Entropy
Miguel Cruz, Joel Saavedra, Juan Rodriguez
We investigate thermodynamic criticality in a spatially flat Friedmann-Lema\^ıtre-Robertson-Walker universe with a non-extensive Loop Quantum Gravity inspired entropy on its appare…
Curvature-induced phantom mimicry and cosmological bounces without violating the Dominant Energy Condition
Miguel Cruz, Samuel Lepe
We explore the active geometric contribution of spatial curvature in a closed universe, distinguishing between kinematic superacceleration and the strict violation of matter energy…
Cosmological Stealth fields and Non-Equilibrium thermodynamics
Gilberto Aguilar-Pérez, Cuauhtemoc Campuzano, Víctor H. Cárdenas +2
We investigate the connection between cosmological stealth scalar fields and non-equilibrium thermodynamics in a spatially flat Friedmann-Lemaître-Robertson-Walker (FLRW) backgroun…
Spatial curvature in Unimodular Gravity
Gilberto Aguilar-Pérez, Miguel Cruz, Samuel Lepe
We investigate the cosmological implications of unimodular gravity (UG) featuring energy diffusion and spatial curvature. While standard diffusion models often suffer from thermody…
Correspondence between a decaying dark matter sector scenario and scalar field model
Gilberto Aguilar-Pérez, Deryan Alvarado, Miguel Cruz +2
We explore the theoretical viability of modeling a decaying dark matter sector through a unified scalar field approach. Using exact analytical solutions of the Friedmann constraint…
Thermodynamic constraints and future singularities in Unimodular Gravity driven by phantom and non-phantom fluids
Norman Cruz, Samuel Lepe, Guillermo Palma +1
This work investigates future cosmological singularities in a flat FLRW universe filled with a single barotropic fluid, (), within the framework of unimodular gravity.…
Beyond Comoving Volume: Horizon Flux and Matter Creation in Modified Cosmology from the Unified First Law of Thermodynamics
Víctor H. Cárdenas, Miguel Cruz, Samuel Lepe
We explore the derivation of the Friedmann equations from a thermodynamic perspective, applying the unified first law of thermodynamics to the apparent horizon of a flat Friedmann-…
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…
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…
Revealing some cosmological aspects of Kaniadakis entropy
Miguel Cruz, Samuel Lepe, Joel Saavedra
Adopting the modifications induced by the truncated version of the Kaniadakis entropy on the Friedmann equations, we explore some relevant aspects of this cosmological scenario at…
Exploring thermodynamics inconsistencies in unimodular gravity: a comparative study of two energy diffusion functions
Miguel Cruz, Norman Cruz, Samuel Lepe
In this work we study the thermodynamics formulation for unimodular gravity under the election of two different models for the energy diffusion function. Such function encodes the…
A new approach to phase transitions: Einstein gravity and holographic type dark energy
Miguel Cruz, Samuel Lepe, Joel Saavedra
In the framework of Einstein's gravity, we study the thermodynamic equation state, , associated with a flat Friedmann-Lemaitre-Robertson-Walker (FLRW) universe. In this s…