50 citations · 52 across the 3 of their papers we have counts for
6 papers
From matter to galaxies: General relativistic bias for the one-loop bispectrum
Juan Calles, Lina Castiblanco, Jorge Noreña +1
We write down the Lagrangian bias expansion in general relativity up to 4th order in terms of operators describing the curvature of an early-time hypersurface for comoving observer…
Large scale structures: from inflation to today: a brief report
Lina Castiblanco, Radouane Gannouji, Clément Stahl
We briefly review some selected topics gravitating around large scale structures. We derive from inflation the evolution of dark matter perturbations. The stress is put on the non-…
Effect of Schwinger pair production on the evolution of the Hubble constant in de~Sitter spacetime
Ehsan Bavarsad, Sang Pyo Kim, Clément Stahl +1
In this proceeding we consider a massive charged scalar field in a uniform electric field background in a de~Sitter spacetime (dS). We compute the in-vacuum expectation value of th…
Effect of a magnetic field on Schwinger mechanism in de Sitter spacetime
Ehsan Bavarsad, Sang Pyo Kim, Clément Stahl +1
We investigate the effect of a constant magnetic field background on the scalar QED pair production in a four-dimensional de Sitter spacetime ($\dsf$). We have obtained the pair pr…
On early and late phases of acceleration of the expansion of the universe
Clément Stahl
This thesis tackles the vast question of generating accelerated periods of expansion of the universe. Models loosely related were developed in the early and late universe. In the e…
Pair creation in the early universe
Clément Stahl, Eckhard Strobel, She-Sheng Xue
In the very early universe, a generalized Schwinger effect can create pairs from both electrical and gravitational fields. The expectation value of fermionic current induced by the…