15 citations · 29 across the 11 of their papers we have counts for
11 papers
Compaction function in stochastic inflation: a \texttt{FOREST} of type I and II primordial black holes
Chiara Animali, Pierre Auclair, Baptiste Blachier +2
We show how to compute the compaction function within stochastic inflation, by solving the random field dynamics on stochastic binary trees. In this framework, the compaction funct…
Time-reversed stochastic inflation in the quantum well
Chiara Animali, Baptiste Blachier, Nanoka Okada +3
Time-reversed stochastic inflation solves the stochastic evolution of the inflationary universe backward in time, by counting the number of e-folds from the end of quantum diffusio…
Excursion-set for Primordial Black Holes I: white noise and moving barrier
Pierre Auclair, Baptiste Blachier, Vincent Vennin
In the excursion-set formalism, the mass distribution of primordial black holes (PBHs) is derived from the first-passage time of a random walk describing the density contrast as th…
Friction in Stochastic Inflation
Baptiste Blachier, Christophe Ringeval
We solve time-reversed stochastic inflation in the semi-infinite flat potential with a constant drift term and derive an exact expression for the probability distribution of the cu…
Time-reversed Stochastic Inflation
Baptiste Blachier, Christophe Ringeval
Cosmic inflation may exhibit stochastic periods during which quantum fluctuations dominate over the semi-classical evolution. Extracting observables in these regimes is a notorious…
Harvesting primordial black holes from stochastic trees with
Chiara Animali, Pierre Auclair, Baptiste Blachier +1
We introduce a novel framework to implement stochastic inflation on stochastic trees, modelling the inflationary expansion as a branching process. Combined with the formalism,…
Clocking the End of Cosmic Inflation
Pierre Auclair, Baptiste Blachier, Christophe Ringeval
Making observable predictions for cosmic inflation requires determining when the wavenumbers of astrophysical interest today exited the Hubble radius during the inflationary epoch.…
Small-scale clustering of Primordial Black Holes: cloud-in-cloud and exclusion effects
Pierre Auclair, Baptiste Blachier
Using an excursion-set approach, we revisit the initial spatial clustering of Primordial Black Holes (PBHs) originating from the Hubble re-entry of large Gaussian density fluctuati…
Einstein vs Hawking: Black hole binaries and cosmological expansion
Aurélien Barrau, Baptiste Blachier, Maxime Lahlou +2
This note aims at investigating two different situations where the classical general relativistic dynamics competes with the evolution driven by Hawking evaporation. We focus, in p…
Competitive effects between gravitational radiation and mass variation for two-body systems in circular orbits
Baptiste Blachier, Aurélien Barrau, Killian Martineau +1
This work provides, at lower order, general analytical solutions for the orbital separation, merging time, and orbital frequency of binary systems emitting gravitational waves whil…
Spatial Curvature from Super-Hubble Cosmological Fluctuations
Baptiste Blachier, Pierre Auclair, Christophe Ringeval +1
We revisit how super-Hubble cosmological fluctuations induce, at any time in the cosmic history, a non-vanishing spatial curvature of the local background metric. The random nature…