5 papers
Large deviations for halos and voids: beyond perturbative non-gaussianities
Martin Teuscher, Ruth Durrer, Julien Grain +2
The excursion-set formalism provides a key connection between primordial density fluctuations and the abundance of cosmic structures such as dark matter halos and voids, traditiona…
A universal scaling law for gravitational waves induced during inflation
Martin Teuscher, Ruth Durrer, Killian Martineau +1
We consider the stochastic gravitational wave background induced by arbitrary source fields that are amplified during cosmological inflation. The associated tensor spectral index i…
Gravitational Waves sourced by Gauge Fields during Inflation
Martin Teuscher, Ruth Durrer, Killian Martineau +1
We study the inflationary gravitational wave background induced by Abelian gauge fields generated by non-minimal kinetic and axial couplings to the inflaton. We show that, up to sl…
Prospects for detection of ultra high frequency gravitational waves from hyperbolic encounters with resonant cavities
Aurélien Barrau, Juan GarcÃa-Bellido, Killian Martineau +1
In this brief article, we pursue the systematic investigation of possible gravitational wave sources in the gigahertz band. We focus on hyperbolic encounters of light black holes a…
Elementary considerations on gravitational waves from hyperbolic encounters
Martin Teuscher, Aurélien Barrau, Killian Martineau
We examine the main properties of gravitational waves (GWs) emitted by transient hyperbolic encounters of black holes. We begin by building the set of basic variables most relevant…