70 citations · 767 across the 42 of their papers we have counts for
33 papers · 1 filter
Thermodynamics of a transient phantom scenario
Miguel Cruz, Samuel Lepe
This work is devoted to the thermodynamics description of a phantom scenario proposed previously by the authors. The presence of negative chemical potential is unavoidable if we al…
Generalized second law of thermodynamics for the matter creation scenario and emergence of phantom regime
Víctor H. Cárdenas, Miguel Cruz, Samuel Lepe
This work is focused on the exploration of the thermodynamics foundations of the matter creation scenario when a generalized form of the second law of thermodynamics for this schem…
Phantom cosmologies from QCD ghost dark energy
Miguel Cruz, Samuel Lepe, Germán E. Soto
We review a dynamical dark energy model scarcely studied in the literature and we introduce two possible generalizations. We discuss separately the behavior of the original model a…
Holography and matter creation revisited
V. H. Cárdenas, Miguel Cruz, Samuel Lepe
The consideration of the holographic dark energy approach and matter creation effects in a single cosmological model is carried out in this work accordingly, we discuss some cases…
Qualitative analysis for viscous cosmologies in a non linear regime of the Israel-Stewart formalism
Gilberto Aguilar-Pérez, Ana A. Avilez-López, Miguel Cruz
We explore the dynamical properties of a cosmological model that includes viscous effects in the dark matter sector of the fluid equations in a flat Friedmann-Lemaitre-Robertson-Wa…
Testing a nonlinear solution of the Israel-Stewart theory
Miguel Cruz, Norman Cruz, Esteban González +1
In this work, we test the capability of an exact solution found in the framework of a nonlinear extension of the Israel-Stewart theory to fit the supernovae Ia, gravitational lensi…
Holographic dark energy in curved spacetime for interacting fluids
Azucena Bolaños, Miguel Cruz, Samuel Lepe +1
In this work we explore the scope of two holographic dark energy models within the interacting scenario for the dark sector and spatial curvature. For one holographic model we cons…
Matter production effects and interacting scenario within a reconstructed mimetic cosmology for late times
Víctor H. Cárdenas, Miguel Cruz, Samuel Lepe
In this work we explore two possible scenarios that can be considered to extend a recent proposed model by the authors known as reconstructed mimetic cosmology. This study is compl…
Reconstructing Mimetic Cosmology
Víctor H. Cárdenas, Miguel Cruz, Samuel Lepe +1
We explore the mimetic gravity formulation with the inclusion of a scalar field potential namely, . However, we are not considering any {\it a priori} specific form this term…
Cosmic expansion with matter creation and bulk viscosity
Víctor H. Cárdenas, Miguel Cruz, Samuel Lepe
We explore the cosmological implications at effective level of matter creation effects in a dissipative fluid for a FLRW geometry; we also perform a statistical analysis for this k…
Non-zero torsion and late cosmology
Miguel Cruz, Fernando Izaurieta, Samuel Lepe
In this work, we study some thermodynamical aspects associated with torsion in a flat FLRW spacetime cosmic evolution. By implementing two Ansatze for the torsion term, we find tha…
Polar gravitational perturbations and quasinormal modes of a loop quantum gravity black hole
M. B. Cruz, F. A. Brito, C. A. S. Silva
In this work, we have calculated the polar gravitational quasinormal modes for a quantum corrected black hole model, that arises in the context of Loop Quantum Gravity, known as Se…
Challenging matter creation models in the phantom divide
Víctor H. Cárdenas, Miguel Cruz, Samuel Lepe +2
We perform a study both statistical and theoretical for cosmological models of matter creation and their ability to describe effective phantom models of dark energy. Such models ar…
Unified dissipative dark matter model in a non linear Israel-Stewart theory
Miguel Cruz, Norman Cruz, Samuel Lepe
In this paper we study the Statefinder and diagnoses of an exact solution of a unified dissipative dark matter model in the framework the Israel-Stewart theory and its non…
Hairy black hole stability under odd parity perturbations in the Einstein-Gauss-Bonnet model
Gilberto Aguilar-Pérez, Miguel Cruz, Samuel Lepe +1
Supported by the use of a regular scalar field we find a black hole solution in the Einstein-Gauss-Bonnet model. From the obtained solution we can recover the Schwarzschild black h…
A thermodynamics revision of Rastall gravity
Miguel Cruz, Samuel Lepe, Gerardo Morales-Navarrete
In this work we study some aspects of the Rastall gravity, being the thermodynamics consistency of the model the core of this paper, for this purpose we will consider the dynamical…
Qualitative description of the universe in the interacting fluids scheme
Miguel Cruz, Samuel Lepe, Gerardo Morales-Navarrete
In this work we present a qualitative description of the evolution of a curved universe when we consider the interacting scheme for the constituents of the dark sector. The resulti…
Modeling holographic dark energy with particle and future horizons
Miguel Cruz, Samuel Lepe
In this work we explore some cosmological properties coming from the particle and future horizons when are considered as candidates to model the dark energy sector within a hologra…
A holographic cut-off inspired in the apparent horizon
Miguel Cruz, Samuel Lepe
In this work we consider a general function for the term that appears in the conventional expression for the holographic dark energy in a FLRW curved spacetime. The cut-off…
Thermodynamically allowed phantom cosmology with viscous fluid
Miguel Cruz, Samuel Lepe, Sergei D. Odintsov
In this work we present an analysis of the phantom zone in a causal viscous cosmology from a thermodynamic point of view. In this description we consider a chemical potential and t…
Holographic approach for dark energy - dark matter interaction in curved FLRW spacetime
Miguel Cruz, Samuel Lepe
In this work we explore under a holographic approach the dark energy - dark matter interaction in a non-flat Friedmann-Lemaitre-Robertson-Walker spacetime, with a cut-off for the d…
Accelerated and decelerated expansion in a causal dissipative cosmology
Miguel Cruz, Norman Cruz, Samuel Lepe
In this work we explore a new cosmological solution for an universe filled with one dissipative fluid, described by a barotropic EoS , in the framework of the full Israel-S…
Global structure of static spherically symmetric solutions surrounded by quintessence
Miguel Cruz, Apratim Ganguly, Radouane Gannouji +2
We investigate all static spherically symmetric solutions in the context of general relativity surrounded by a minimally-coupled quintessence field, using dynamical system analysis…
Phantom solution in a non-linear Israel-Stewart theory
Miguel Cruz, Norman Cruz, Samuel Lepe
In this paper we present a phantom solution with a big rip singularity in a non-linear regime of the Israel-Stewart formalism. In this framework it is possible to extend this causa…