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14 papers · 1 filter
False Vacuum Inflation with a Quartic Potential
David Roberts, Andrew R Liddle, David H Lyth
We consider a variant of Hybrid Inflation, where inflation is driven by two interacting scalar fields, one of which has a `Mexican hat' potential and the other a quartic potential.…
Trends in Large Scale Structure Observations and the Likelihood of Early Reionization
Andrew R Liddle, David H Lyth
With the imminent promise of constraints on the epoch of reionization from observations of microwave background anisotropies, the question of whether or not the standard Cold Dark…
False Vacuum Chaotic Inflation: The New Paradigm?
David H. Lyth, Ewan D. Stewart
Recent work is reported on inflation model building in the context of supergravity and superstrings, with special emphasis on False Vacuum (`Hybrid') Chaotic Inflation. Globally su…
Dynamical Generation of Spacetime Signature by Massive Quantum Fields on a Topologically Non-Trivial Background
Sergei D. Odintsov, August Romeo, Robin W. Tucker
The effective potential for a dynamical Wick field (dynamical signature) induced by the quantum effects of massive fields on a topologically non-trivial dimensional background…
On the Banach space isomorphism type of AF C*-algebras and their triangular subalgebras
S. C. Power
It is shown that all the approximately finite dimensional C*-algebras which are not of Type I are isomorphic as Banach spaces. This generalises the matroid case given previously by…
Infinite Lexicographic Products of Triangular Algebras
S. C. Power
Some new connections are given between linear orderings and triangular operator algebras. A lexicograhic product is defined for triangular operator algebras and the Jacobson radica…