261 citations · 2.8k across the 60 of their papers we have counts for
31 papers · 1 filter
Primordial Black Holes in a Radiation-Dominated Universe
Thomas W. Baumgarte, Katy Clough, Mary Gerhardinger +2
Primordial fluctuations frozen out during inflation re-enter the cosmological horizon and can collapse, leading to the formation of primordial black holes. We perform simulations o…
Primordial Black Holes from Kinetic Preheating
Peter Adshead, Eve Currens, John T. Giblin
We demonstrate that violent kinetic preheating following inflation can lead to the formation of black holes in the early Universe. In -attractor models with derivative inflaton…
The Effect of Nonlinear Gravity on the Cosmological Background During Preheating
Ryn Grutkoski, Hayley J. Macpherson, John T. Giblin +1
We use numerical relativity to study the violent preheating era at the end of inflation. This epoch can result in highly nonlinear fluctuations in density and gravitational potenti…
Conversations and Deliberations: Non-Standard Cosmological Epochs and Expansion Histories
Brian Batell, Keith R. Dienes, Brooks Thomas +17
This document summarizes the discussions which took place during the PITT-PACC Workshop entitled "Non-Standard Cosmological Epochs and Expansion Histories," held in Pittsburgh, Pen…
Gravitational Waves from Kinetic Preheating
Peter Adshead, John T. Giblin, Avery Tishue
We study gravitational wave production during kinetic preheating after inflation with a focus on scenarios that arise in -attractor models where a scalar dilaton-like inflaton i…
Generalized Models for Inflationary Preheating: Oscillations and Symmetries
Leia Barrowes, Fred C. Adams, Anthony M. Bloch +2
The paradigm of the inflationary universe provides a possible explanation for several observed cosmological properties. In order for such solutions to be successful, the universe m…