529 citations · 4.3k across the 96 of their papers we have counts for
6 papers · 1 filter
Real-Time Perturbation Theory in de Sitter Space
Kevin Goldstein, David A. Lowe
We consider scalar field theory in de Sitter space with a general vacuum invariant under the continuously connected symmetries of the de Sitter group. We begin by reviewing approac…
Ultra High Energy Cosmic Rays and de Sitter Vacua
Gian Luigi Alberghi, Kevin Goldstein, David A. Lowe
The production of ultra high-energy cosmic rays in de Sitter invariant vacuum states is considered. Assuming the present-day universe is asymptoting toward a future de Sitter phase…
Stretched horizons, quasiparticles and quasinormal modes
Norihiro Iizuka, Daniel Kabat, Gilad Lifschytz +1
We propose that stretched horizons can be described in terms of a gas of non-interacting quasiparticles. The quasiparticles are unstable, with a lifetime set by the imaginary part…
Massive IIA String Theory and Matrix Theory Compactification
David A. Lowe, Horatiu Nastase, Sanjaye Ramgoolam
We propose a Matrix Theory approach to Romans' massive Type IIA supergravity. It is obtained by applying the procedure of Matrix Theory compactifications to Hull's proposal of the…
A note on alpha-vacua and interacting field theory in de Sitter space
Kevin Goldstein, David A. Lowe
We set up a consistent renormalizable perturbation theory of a scalar field in a nontrivial alpha vacuum in de Sitter space. Although one representation of the effective action inv…
Quasiparticle picture of black holes and the entropy--area relation
Norihiro Iizuka, Daniel Kabat, Gilad Lifschytz +1
We propose an effective description of 0-brane black holes, in which the black hole is modeled as a gas of non-interacting quasi-particles in the dual quantum mechanics. This simpl…