927 citations · 6.3k across the 60 of their papers we have counts for
46 papers · 1 filter
Gravitational Wave Emission from a Cosmic String Loop, I: Global Case
Jorge Baeza-Ballesteros, Edmund J. Copeland, Daniel G. Figueroa +1
We study the simultaneous decay of global string loops into scalar particles (massless and massive modes) and gravitational waves (GWs). Using field theory simulations in flat spac…
Cosmological Background Interpretation of Pulsar Timing Array Data
Daniel G. Figueroa, Mauro Pieroni, Angelo Ricciardone +1
We discuss the interpretation of the detected signal by Pulsar Timing Array (PTA) observations as a gravitational wave background (GWB) of cosmological origin. We combine NANOGrav…
The strong backreaction regime in axion inflation
Daniel G. Figueroa, Joanes Lizarraga, Ander Urio +1
We study the non-linear dynamics of axion inflation, capturing for the first time the inhomogeneity and full dynamical range during strong backreaction, till the end of inflation.…
Stochastic gravitational wave background from stellar origin binary black holes in LISA
Stanislav Babak, Chiara Caprini, Daniel G. Figueroa +7
We use the latest constraints on the population of stellar origin binary black holes (SOBBH) from LIGO/Virgo/KAGRA (LVK) observations, to estimate the stochastic gravitational wave…
Gravitational wave production from preheating with trilinear interactions
Catarina Cosme, Daniel G. Figueroa, Nicolas Loayza
We investigate the production of gravitational waves (GWs) during preheating with monomial/polynomial inflationary potentials, considering a trilinear coupling between a dau…
Cosmology with the Laser Interferometer Space Antenna
Pierre Auclair, David Bacon, Tessa Baker +177
The Laser Interferometer Space Antenna (LISA) has two scientific objectives of cosmological focus: to probe the expansion rate of the universe, and to understand stochastic gravita…
"Stairway to Heaven" -- Spectroscopy of Particle Couplings with Gravitational Waves
Daniel G. Figueroa, Adrien Florio, Nicolas Loayza +1
We discuss the possibility to measure particle couplings with stochastic gravitational wave backgrounds (SGWBs). Under certain circumstances a sequence of peaks of different amplit…
Probing Anisotropies of the Stochastic Gravitational Wave Background with LISA
Nicola Bartolo, Daniele Bertacca, Robert Caldwell +19
We investigate the sensitivity of the Laser Interferometer Space Antenna (LISA) to the anisotropies of the Stochastic Gravitational Wave Background (SGWB). We first discuss the mai…
Characterizing the post-inflationary reheating history, Part I: single daughter field with quadratic-quadratic interaction
Stefan Antusch, Daniel G. Figueroa, Kenneth Marschall +1
We study the evolution of the energy distribution and equation of state of the Universe from the end of inflation until the onset of either radiation domination (RD) or a transient…
Implications of stochastic effects for primordial black hole production in ultra-slow-roll inflation
Daniel G. Figueroa, Sami Raatikainen, Syksy Rasanen +1
We study the impact of stochastic noise on the generation of primordial black hole (PBH) seeds in ultra-slow-roll (USR) inflation with numerical simulations. We consider the non-li…
CosmoLattice
Daniel G. Figueroa, Adrien Florio, Francisco Torrenti +1
This is the user manual for CosmoLattice, a modern package for lattice simulations of the dynamics of interacting scalar and gauge fields in an expanding universe. CosmoLattice inc…
Non-Gaussian tail of the curvature perturbation in stochastic ultra-slow-roll inflation: implications for primordial black hole production
Daniel G. Figueroa, Sami Raatikainen, Syksy Rasanen +1
We consider quantum diffusion in ultra-slow-roll (USR) inflation. Using the formalism, we present the first stochastic calculation of the probability distribution $P(\mathcal{…
Irreducible background of gravitational waves from a cosmic defect network: update and comparison of numerical techniques
Daniel G. Figueroa, Mark Hindmarsh, Joanes Lizarraga +1
Cosmological phase transitions in the early Universe may produce relics in the form of a network of cosmic defects. Independently of the order of a phase transition, topology of th…
The First Three Seconds: a Review of Possible Expansion Histories of the Early Universe
Rouzbeh Allahverdi, Mustafa A. Amin, Asher Berlin +23
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. W…
The art of simulating the early Universe -- Part I
Daniel G. Figueroa, Adrien Florio, Francisco Torrenti +1
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 formulatio…
Energy distribution and equation of state of the early Universe: matching the end of inflation and the onset of radiation domination
Stefan Antusch, Daniel G. Figueroa, Kenneth Marschall +1
We study the energy distribution and equation of state of the universe between the end of inflation and the onset of radiation domination (RD), considering observationally consiste…
Probing the gravitational wave background from cosmic strings with LISA
Pierre Auclair, Jose J. Blanco-Pillado, Daniel G. Figueroa +8
Cosmic string networks offer one of the best prospects for detection of cosmological gravitational waves (GWs). The combined incoherent GW emission of a large number of string loop…
Reconstructing the spectral shape of a stochastic gravitational wave background with LISA
Chiara Caprini, Daniel G. Figueroa, Raphael Flauger +5
We present a set of tools to assess the capabilities of LISA to detect and reconstruct the spectral shape and amplitude of a stochastic gravitational wave background (SGWB). We fir…
Ability of LIGO and LISA to probe the equation of state of the early Universe
Daniel G. Figueroa, Erwin H. Tanin
The expansion history of the Universe between the end of inflation and the onset of radiation-domination (RD) is currently unknown. If the equation of state during this period is s…
Lattice formulation of axion inflation. Application to preheating
Jose Roberto Canivete Cuissa, Daniel G. Figueroa
We present a lattice formulation of an interaction between an axion and some gauge sector with the following properties: it reproduces the continuum th…
Inconsistency of an inflationary sector coupled only to Einstein gravity
Daniel G. Figueroa, Erwin H. Tanin
From a model-building perspective, the inflationary sector might very well have no direct couplings to other species, apart from inevitable gravitational interactions. Within the c…
LISA as a probe for particle physics: electroweak scale tests in synergy with ground-based experiments
Daniel G. Figueroa, Eugenio Megias, Germano Nardini +4
We forecast the prospective of detection for a stochastic gravitational wave background sourced by cosmological first-order phase transitions. We focus on first-order phase transit…
Probing non-Gaussian Stochastic Gravitational Wave Backgrounds with LISA
Nicola Bartolo, Valerie Domcke, Daniel G. Figueroa +7
The stochastic gravitational wave background (SGWB) contains a wealth of information on astrophysical and cosmological processes. A major challenge of upcoming years will be to ext…
Cosmological Backgrounds of Gravitational Waves
Chiara Caprini, Daniel G. Figueroa
Gravitational waves (GWs) have a great potential to probe cosmology. We review early universe sources that can lead to cosmological backgrounds of GWs. We begin by presenting defin…