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a-attractors in quintessential inflation motivated by supergravity
(American Physical Society, 2021-06-15)
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An exponential kind of quintessential inflation potential motivated by supergravity is studied. This type belongs to the class of a-attractor models. The model was studied for the first time by Dimopoulos and Owen in [J. ...
Motility switching and front–back synchronisation in polarised cells
(2022-06)
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Article.
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The combination of protrusions and retractions in the movement of polarized cells leads to understand the effect of possible synchronisation between the two ends of the cells. This syn- chronisation, in turn, could lead ...
The spectrum of gravitational waves, their overproduction in quintessential inflation and its influence in the reheating temperature
(2020-06-01)
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One of the most important issues in an inflationary theory as standard or quintessential inflation is the mechanism to reheat the universe after the end of the inflationary period in order to match with the Hot Big Bang ...
Matter Bounce Scenario in F(T) gravity
(2016)
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Article.
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It is shown that teleparallel F(T) theories of gravity combined with holonomy corrected Loop Quantum Cosmology (LQC) support a Matter Bounce Scenario (MBS) which is a potential alternative to the inflationary paradigm. The ...
Cosmology intertwined: a review of the particle physics, astrophysics, and cosmology associated with the cosmological tensions and anomalies
(2022-06)
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Article.
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The standard Λ Cold Dark Matter (ΛCDM) cosmological model provides a good description of a wide range of astrophysical and cosmological data. However, there are a few big open questions that make the standard model look ...
Quintessential inflation and cosmological seesaw mechanism: reheating and observational constraints
(2021-07)
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Article.
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Recently a new kind of quintessential inflation coming from the Lorentzian distribution has been introduced in [1,2]. The model leads to a very simple potential, which basically depends on two parameters, belonging to the ...
Theoretical and observational bounds on some interacting vacuum energy scenarios
(American Physical Society, 2021-04-15)
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The dynamics of interacting dark matter-dark energy models is characterized through an interaction rate function quantifying the energy flow between these dark sectors. In most of the interaction functions, the expansion ...
Macroscopic descriptions of follower-leader systems
(2021)
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The fundamental derivation of macroscopic model equations to describe swarms based on microscopic movement laws and mathematical analyses into their self-organisation capabilities remains a challenge from the perspective ...
Quintessential inflation for exponential type potentials: scaling and tracker behavior
(springer-Verlag, 2021-02)
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Article.
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We will show that for exponential type potentials of the form V(f)~e-¿fn/Mnpl, which are used to depict quintessential inflation, the solutions whose initial conditions take place during the slow roll phase in order to ...
Planelike minimizers of nonlocal Ginzburg-Landau energies and fractional perimeters in periodic media
(2018-07-01)
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Article.
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We consider here a nonlocal phase transition energy in a periodic medium and we construct solutions whose interfaces lie at a bounded distance from any given hyperplane.
These solutions are either periodic or quasiperiodic, ...