5 papers
On The Absence Of Open Strings In A Lattice-Free Simulation Of Cosmic String Formation
Julian Borrill
Lattice-based string formation algorithms can, at least in principle, be reduced to the study of the statistics of the corresponding aperiodic random walk. Since in three or more d…
Defect Production in Slow First Order Phase Transitions
Julian Borrill, T. W. B. Kibble, Tanmay Vachaspati +1
We study the formation of vortices in a U(1) gauge theory following a first-order transition proceeding by bubble nucleation, in particular the effect of a low velocity of expansio…
Thermal Phase Mixing During First Order Phase Transitions
Julian Borrill, Marcelo Gleiser
The dynamics of first order phase transitions are studied in the context of (3+1)-dimensional scalar field theories. Particular attention is paid to the question of quantifying the…
Numerical Methods in Cosmological Global Texture Simulations
Julian Borrill
Numerical simulations of the evolution of a global topological defect field have two characteristic length scales --- one macrophysical, of order the field correlation length, and…
Texture-Induced Microwave Background Anisotropies
Julian Borrill, Edmund J Copeland, Andrew R Liddle +2
We use numerical simulations to calculate the cosmic microwave background anisotropy induced by the evolution of a global texture field, with special emphasis on individual texture…