76 citations · 230 across the 4 of their papers we have counts for
4 papers
Cosmological Dynamics of a Dirac-Born-Infeld field
Edmund J. Copeland, Shuntaro Mizuno, Maryam Shaeri
We analyze the dynamics of a Dirac-Born-Infeld (DBI) field in a cosmological set-up which includes a perfect fluid. Introducing convenient dynamical variables, we show the evolutio…
Dynamics of a scalar field in Robertson-Walker spacetimes
Edmund J. Copeland, Shuntaro Mizuno, Maryam Shaeri
We analyze the dynamics of a single scalar field in Friedmann-Robertson-Walker universes with spatial curvature. We obtain the fixed point solutions which are shown to be late time…
The gravitational wave background from super-inflation in Loop Quantum Cosmology
E. J. Copeland, D. J. Mulryne, N. J. Nunes +1
We investigate the behaviour of tensor fluctuations in Loop Quantum Cosmology, focusing on a class of scaling solutions which admit a near scale-invariant scalar field power spectr…
Super-inflation in Loop Quantum Cosmology
E. J. Copeland, D. J. Mulryne, N. J. Nunes +1
We investigate the dynamics of super-inflation in two versions of Loop Quantum Cosmology, one in which the Friedmann equation is modified by the presence of inverse volume correcti…