109 citations · 473 across the 9 of their papers we have counts for
9 papers
Running Vacuum in the expanding Universe: a unified QFT paradigm for Inflation and Dark Energy
Joan Solà Peracaula
The concordance CDM model, based on a rigid -term for the entire cosmic history, has been in crisis for a long time. In our expanding Universe, an evolving with the expan…
Towards a unified quantum field theory of dark energy and inflation: unstable de Sitter vacuum and running vacuum
Joan Solà Peracaula, Àlex González-Fuentes, Cristian Moreno-Pulido
Inflation is a necessary cosmic mechanism to cure basic inconsistencies of the standard model of cosmology. These problems are usually `fixed' by postulating the existence of a sca…
Phantom matter: a challenging solution to the cosmological tensions
Adria Gomez-Valent, Joan Sola Peracaula
The idea of composite dark energy (DE) is quite natural since on general grounds we expect that the vacuum energy density (associated with the cosmological term ) may appear in…
Stringy Running Vacuum Model and current Tensions in Cosmology
Adrià Gómez-Valent, Nick E. Mavromatos, Joan Solà Peracaula
We discuss the potential alleviation of both the Hubble and the growth of galactic structure data tensions observed in the current epoch of Cosmology in the context of the so-calle…
The Cosmological Constant Problem and Running Vacuum in the Expanding Universe
Joan Sola Peracaula
It is well-known that quantum field theory (QFT) induces a huge value of the cosmological constant, , which is outrageously inconsistent with cosmological observations. We revie…
Renormalizing the vacuum energy in cosmological spacetime: implications for the cosmological constant problem
Cristian Moreno-Pulido, Joan Sola Peracaula
The renormalization of the vacuum energy in quantum field theory (QFT) is usually plagued with theoretical conundrums related not only with the renormalization procedure itself, bu…
Friedmann cosmology with decaying vacuum density in Brans-Dicke theory
C. P. Singh, Joan Sola Peracaula
In this paper, we study Friedmann cosmology with time-varying vacuum energy density in the context of Brans-Dicke theory. We consider an isotropic and homogeneous flat space, fille…
Inflationary physics and transplanckian conjecture in the Stringy Running-Vacuum-Model: from the phantom vacuum to the true vacuum
Nick E. Mavromatos, Joan Sola
In previous works we have embedded the Running Vacuum Model (RVM) of Cosmology in the framework of string theory. Specifically, we considered a string-inspired Cosmology with primo…
Dynamical dark energy versus const. in light of observations
Joan Sola Peracaula, Javier de Cruz Perez, Adria Gomez-Valent
After about two decades of the first observational papers confirming the accelerated expansion of the universe, we are still facing the question whether the cause of it is a rigid…