8 papers
Vortices in Theories with Flat Directions
A. Achucarro, A. C. Davis, M. Pickles +1
In theories with flat directions containing vortices, such as supersymmetric QED, there is a vacuum selection effect in the allowed asymptotic configurations. We explain the role p…
Prolongation of Friction Dominated Evolution for Superconducting Cosmic Strings
B. Carter, R. Brandenberger, A. -C. Davis +1
This investigation is concerned with cosmological scenarios based on particle physics theories that give rise to superconducting cosmic strings (whose subsequent evolution may prod…
Cosmic Vortons and Particle Physics Constraints
R. Brandenberger, B. Carter, A. -C. Davis +1
We investigate the cosmological consequences of particle physics theories that admit stable loops of superconducting cosmic string - {\it vortons}. General symmetry breaking scheme…
The Stability of Primordial Magnetic Fields Produced by Phase Transitions
A. P. Martin, A. C. Davis
Primordial magnetic fields seem to be a generic relic of phase transitions in the early universe. We consider a primordial electromagnetic field formed as a result of a second-orde…
Evolution of Fields in a Second Order Phase Transition
A. P. Martin, A. C. Davis
We analyse the evolution of scalar and gauge fields during a second order phase transition using a Langevin equation approach. We show that topological defects formed during the ph…
Global Strings and the Aharonov-Bohm Effect
A. C. Davis, A. P. Martin
When a fermion interacts with a global vortex or cosmic string a solenoidal "gauge" field is induced. This results in a non-trivial scattering cross-section. For scalars and non-re…