From the 1 of 7 linked papers with an AI index.
7 papers
Inflation in unimodular loop quantum cosmology
Steffen Gielen, Rita B. Neves
The paper investigates inflationary dynamics within unimodular loop quantum cosmology, using a geometrically defined unimodular time and deriving both analytical and numerical solu…
Renormalization effects fade away during inflation
Christian Durán Romero, Luis J. Garay, Mercedes MartÃn-Benito +1
The renormalization of the primordial inflationary power spectrum has long raised the possibility that ultraviolet effects could significantly alter predictions for cosmological ob…
Asymptotic regularization method. A constructive approach
Christian Durán Romero, Luis J. Garay, Mercedes MartÃn-Benito +1
We introduce a new regularization scheme for divergent integrals in quantum field theory. The framework is based on the structural decomposition of the integrand asymptotic expansi…
Adiabatic renormalization for modified dispersion relations in cosmology
Christian Durán-Romero, Luis J. Garay, Mercedes MartÃn-Benito +1
We investigate the behavior of scalar quantum fields in cosmological backgrounds under modified dispersion relations, specifically focusing on how ultraviolet asymptotics influence…
The CosmoVerse White Paper: Addressing observational tensions in cosmology with systematics and fundamental physics
Eleonora Di Valentino, Jackson Levi Said, Adam Riess +533
The standard model of cosmology has provided a good phenomenological description of a wide range of observations both at astrophysical and cosmological scales for several decades.…
Low-curvature quantum corrections from unitary evolution of de Sitter space
Steffen Gielen, Rita B. Neves
We study the quantum dynamics of de Sitter space formulated as a minisuperspace model with flat spatial hypersurfaces in unimodular gravity, both in the Wheeler-DeWitt approach and…