191 citations · 628 across the 20 of their papers we have counts for
14 papers · 1 filter
The Creation of Defects with Core Condensation
Nuno D. Antunes, Pedro Gandra, Ray J. Rivers +1
Defects in superfluid 3He, high-Tc superconductors, QCD colour superfluids and cosmic vortons can possess (anti)ferromagnetic cores, and their generalisations. In each case there i…
Domain Formation: Decided Before, or After the Transition?
Nuno D. Antunes, Pedro Gandra, Ray J. Rivers
There is increasing evidence that causality provides useful bounds in determining the domain structure after a continuous transition. In devising their scaling laws for domain size…
The role of dissipation in biasing the vacuum selection in quantum field theory at finite temperature
F. Freire, N. D. Antunes, P. Salmi +1
We study the symmetry breaking pattern of an O(4) symmetric model of scalar fields, with both charged and neutral fields, interacting with a photon bath. Nagasawa and Brandenberger…
The Effects of Multiplicative Noise in Relativistic Phase Transitions
Nuno D. Antunes, Pedro Gandra, Ray J. Rivers
Effective stochastic equations for the continuous transitions of relativistic quantum fields inevitably contain multiplicative noise. We examine the effect of such noise in a numer…
Spontaneous formation of domain wall lattices in two spatial dimensions
Nuno D. Antunes, Tanmay Vachaspati
We show that the process of spontaneous symmetry breaking can trap a field theoretic system in a highly non-trivial state containing a lattice of domain walls. In one large compact…
Numerical simulation of vacuum particle production: applications to cosmology, dynamical Casimir effect and time-dependent non-homogeneous dielectrics
Nuno D. Antunes
We develop a general numerical method aimed at studying particle production from vacuum states in a variety of settings. As a first example we look at particle production in a simp…