151 citations
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6 papers · 1 filter
Non-Adiabatic Perturbations from Single-Field Inflation
C. Armendariz-Picon
If the inflaton decays into several components during reheating, and if the corresponding decay rates are functions of spacetime-dependent quantities, it is possible to generate en…
Spectral Dependence of CMB Polarization and Parity
K. R. S. Balaji, Robert H. Brandenberger, Damien A. Easson
The polarization of the cosmic microwave background radiation (CMBR) can serve as a probe for nonstandard parity violating interactions. Many such interactions are predicted in par…
Exact Lattice Supersymmetry from Topological Field Theory
Simon Catterall
We discuss the connection between supersymmetric field theories and topological field theories and show how this connection may be used to construct local lattice field theories wh…
Percolation of satisfiability in finite dimensions
J. M. Schwarz, A. Alan Middleton
The satisfiability and optimization of finite-dimensional Boolean formulas are studied using percolation theory, rare region arguments, and boundary effects. In contrast with mean-…
Inflation and Brane Gases
Robert Brandenberger, Damien A. Easson, Anupam Mazumdar
We investigate a new way of realizing a period of cosmological inflation in the context of brane gas cosmology. It is argued that a gas of co-dimension one branes, out of thermal e…
Local spectra of operator weighted shifts
A. Bourhim
In this paper, we study the local spectral properties of unilateral operator weighted shifts.