The first three seconds: a review of possible expansion histories of the early universe

R Allahverdi, MA Amin, A Berlin, N Bernal… - arXiv preprint arXiv …, 2020 - arxiv.org
It is commonly assumed that the energy density of the Universe was dominated by radiation
between reheating after inflation and the onset of matter domination 54,000 years later …

Planck constraints and gravitational wave forecasts for primordial black hole dark matter seeded by multifield inflation

W Qin, SR Geller, S Balaji, E McDonough, DI Kaiser - Physical Review D, 2023 - APS
We perform a Markov Chain Monte Carlo analysis of a simple yet generic multifield inflation
model characterized by two scalar fields coupled to each other and nonminimally coupled to …

Primordial black holes from multifield inflation with nonminimal couplings

SR Geller, W Qin, E McDonough, DI Kaiser - Physical Review D, 2022 - APS
Primordial black holes (PBHs) provide an exciting prospect for accounting for dark matter. In
this paper, we consider inflationary models that incorporate realistic features from high …

CosmoLattice: A modern code for lattice simulations of scalar and gauge field dynamics in an expanding universe

DG Figueroa, A Florio, F Torrenti… - Computer Physics …, 2023 - Elsevier
This paper describes C osmo L attice, a modern package for lattice simulations of the
dynamics of interacting scalar and gauge fields in an expanding universe. C osmo L attice …

The art of simulating the early universe. Part I. Integration techniques and canonical cases

DG Figueroa, A Florio, F Torrenti… - Journal of Cosmology …, 2021 - iopscience.iop.org
We present a comprehensive discussion on lattice techniques for the simulation of scalar
and gauge field dynamics in an expanding universe. After reviewing the continuum …

Preheating in Palatini Higgs inflation

J Rubio, ES Tomberg - Journal of Cosmology and Astroparticle …, 2019 - iopscience.iop.org
We study the details of preheating in Palatini Higgs inflation. We show, that contrary to what
happens in the metric formulation of the model, the Universe does not reheat through the …

Preheating in Einstein-Cartan Higgs Inflation: oscillon formation

M Piani, J Rubio - Journal of Cosmology and Astroparticle …, 2023 - iopscience.iop.org
We make use of classical lattice simulations in 3+ 1 dimensions to study the preheating
stage of Higgs Inflation in Einstein-Cartan gravity. Focusing for concreteness on a simplified …

Oscillon formation during inflationary preheating with general relativity

JC Aurrekoetxea, K Clough, F Muia - Physical Review D, 2023 - APS
We study the nonperturbative evolution of inflationary fluctuations during preheating using
fully nonlinear general-relativistic field-theory simulations. We choose a single-field …

[PDF][PDF] Lectures on reheating after inflation

KD Lozanov - arXiv preprint arXiv:1907.04402, 2019 - arxiv.org
arXiv:1907.04402v1 [astro-ph.CO] 9 Jul 2019 Page 1 2018 MPA LECTURE SERIES ON
COSMOLOGY Lectures on Reheating after Inflation Kaloian Lozanov Max Planck Institute for …

Preheating after multifield inflation with nonminimal couplings. I. Covariant formalism and attractor behavior

MP DeCross, DI Kaiser, A Prabhu… - Physical Review D, 2018 - APS
This is the first of a three-part series of papers, in which we study the preheating phase for
multifield models of inflation involving nonminimal couplings. In this paper, we study the …