359 citations · 1.4k across the 21 of their papers we have counts for
13 papers · 1 filter
BubbleDet: A Python package to compute functional determinants for bubble nucleation
Andreas Ekstedt, Oliver Gould, Joonas Hirvonen
We present a Python package, BubbleDet, for computing one-loop functional determinants around spherically symmetric background fields. This gives the next-to-leading order correcti…
Radiative first-order phase transitions to next-to-next-to-leading order
Andreas Ekstedt, Oliver Gould, Johan Löfgren
We develop new perturbative tools to accurately study radiatively-induced first-order phase transitions. Previous perturbative methods have suffered internal inconsistencies and be…
Early-Universe Model Building
Pouya Asadi, Saurabh Bansal, Asher Berlin +37
Theoretical investigations into the evolution of the early universe are an essential part of particle physics that allow us to identify viable extensions to the Standard Model as w…
Opportunities for new physics searches with heavy ions at colliders
David d'Enterria, Marco Drewes, Andrea Giammanco +15
Opportunities for searches for phenomena beyond the Standard Model (BSM) using heavy-ions beams at high energies are outlined. Different BSM searches proposed in the last years in…
Effective field theory approach to thermal bubble nucleation
Oliver Gould, Joonas Hirvonen
The standard vacuum bounce formalism suffers from inconsistencies when applied to thermal bubble nucleation, for which ad hoc workarounds are commonly adopted. Identifying the leng…
On the perturbative expansion at high temperature and implications for cosmological phase transitions
Oliver Gould, Tuomas V. I. Tenkanen
We revisit the perturbative expansion at high temperature and investigate its convergence by inspecting the renormalisation scale dependence of the effective potential. Although at…
Schwinger pair production of magnetic monopoles: momentum distribution for heavy-ion collisions
Oliver Gould, David L. -J. Ho, Arttu Rajantie
Magnetic monopoles may be produced by the dual Schwinger effect in strong magnetic fields. Today, the strongest known magnetic fields in the universe are produced fleetingly in hea…
Real scalar phase transitions: a nonperturbative analysis
Oliver Gould
We study the thermal phase transitions of a generic real scalar field, without a -symmetry, referred to variously as an inert, sterile or singlet scalar, or theory.…
Theoretical uncertainties for cosmological first-order phase transitions
Djuna Croon, Oliver Gould, Philipp Schicho +2
We critically examine the magnitude of theoretical uncertainties in perturbative calculations of first-order phase transitions, using the Standard Model effective field theory as o…
Nonperturbative analysis of the gravitational waves from a first-order electroweak phase transition
Oliver Gould, Jonathan Kozaczuk, Lauri Niemi +3
We present the first end-to-end nonperturbative analysis of the gravitational wave power spectrum from a thermal first-order electroweak phase transition (EWPT), using the framewor…
New physics searches with heavy-ion collisions at the LHC
Roderik Bruce, David d'Enterria, Albert de Roeck +18
This document summarises proposed searches for new physics accessible in the heavy-ion mode at the CERN Large Hadron Collider (LHC), both through hadronic and ultraperipheral …
Observing Thermal Schwinger Pair Production
Oliver Gould, Stuart Mangles, Arttu Rajantie +2
We study the possibility of observing Schwinger pair production enhanced by a thermal bath of photons. We consider the full range of temperatures and electric field intensities fro…
Magnetic monopole mass bounds from heavy ion collisions and neutron stars
Oliver Gould, Arttu Rajantie
Magnetic monopoles, if they exist, would be produced amply in strong magnetic fields and high temperatures via the thermal Schwinger process. Such circumstances arise in heavy ion…