132 citations · 286 across the 6 of their papers we have counts for
7 papers
Non-Equilibrium Phase Transitions and Domain Walls
D. Coulson, Z. Lalak, B. Ovrut
Non-equilibrium phase transitions of a scalar field in an expanding spacetime are discussed. These transitions are shown to lead, for appropriate potential energy functions, to a b…
Causality, randomness, and the microwave background
Andreas Albrecht, David Coulson, Pedro Ferreira +1
Fluctuations in the cosmic microwave background (CMB) temperature are being studied with ever increasing precision. Two competing types of theories might describe the origins of th…
Temperature-Polarization Correlations from Tensor Fluctuations
R. G. Crittenden, D. Coulson, N. G. Turok
We study the polarization-temperature correlations on the cosmic microwave sky resulting from an initial scale invariant spectrum of tensor (gravity wave) fluctuations, such as tho…
Temperature Anisotropies in a Universe with Global Defects
David Coulson
We present a technique of calculating microwave anisotropies from global defects in a reionised universe. We concentrate on angular scales down to one degree where we expect the no…
Polarization and Anisotropy of the Microwave Sky
David Coulson, Robert G. Crittenden, Neil Turok
We study the polarization-polarization and polarization-temperature correlations in standard adiabatic scenarios for structure formation. Temperature anisotropies due to gravitatio…
in the Sky ? Microwave Anisotropies from Cosmic Defects
David Coulson, Pedro Ferreira, Paul Graham +1
High resolution maps of the anisotropy of the microwave sky will yield invaluable clues as to the mechanisms involved in cosmic structure formation. One fundamental question they s…