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21 papers · 2 filters
Cosmology of the Spinor Emergent Universe and Scale-invariant Perturbations
Yi-Fu Cai, Youping Wan, Xinmin Zhang
A nonsingular emergent universe cosmology can be realized by a nonconventional spinor field as first developed in \cite{Cai:2012yf}. We study the mechanisms of generating scale-inv…
Cosmological Perturbations Across an S-brane
Robert H. Brandenberger, Costas Kounnas, Herve Partouche +2
Space-filling S-branes can mediate a transition between a contracting and an expanding universe in the Einstein frame. Following up on previous work that uncovered such bouncing so…
Gravitational Waves from Preheating in M-flation
Amjad Ashoorioon, Brandon Fung, Robert B. Mann +2
Matrix inflation, or M-flation, is a string theory motivated inflationary model with three scalar field matrices and gauge fields in the adjoint representation of the $\mathbf{U}(N…
Deconfinement in N=1 super Yang-Mills theory on R^3 x S^1 via dual-Coulomb gas and "affine" XY-model
Mohamed M. Anber, Scott Collier, Erich Poppitz +2
We study finite-temperature N=1 SU(2) super Yang-Mills theory, compactified on a spatial circle of size L with supersymmetric boundary conditions. In the semiclassical small-L regi…
Holographic Charged Renyi Entropies
Alexandre Belin, Ling-Yan Hung, Alexander Maloney +3
We construct a new class of entanglement measures by extending the usual definition of Renyi entropy to include a chemical potential. These charged Renyi entropies measure the degr…
Perturbative Corrections to Kahler Moduli Spaces
James Halverson, Hans Jockers, Joshua M. Lapan +1
We propose a general formula for perturbative-in-alpha' corrections to the Kahler potential on the quantum Kahler moduli space of Calabi-Yau n-folds, for any n, in their asymptotic…