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20 papers · 2 filters
String Universality for Permutation Orbifolds
Alexandre Belin, Christoph A. Keller, Alexander Maloney
The hypothesis that every theory of quantum gravity in AdS_3 is a dimensional reduction of string/M-theory leads to a natural conjecture for the density of states of two dimensiona…
Non-Kahler Resolved Conifold, Localized Fluxes in M-Theory and Supersymmetry
Keshav Dasgupta, Maxim Emelin, Evan McDonough
The known supergravity solution for wrapped D5-branes on the two-cycle of a Kahler resolved conifold is in general ISD but not supersymmetric, with the supersymmetry being broken b…
On the possibility of blue tensor spectrum within single field inflation
Yi-Fu Cai, Jinn-Ouk Gong, Shi Pi +2
We present a series of theoretical constraints on the potentially viable inflation models that might yield a blue spectrum for primordial tensor perturbations. By performing a deta…
New model of axion monodromy inflation and its cosmological implications
Yi-Fu Cai, Fang Chen, Elisa G. M. Ferreira +1
We propose a new realization of axion monodromy inflation in which axion monodromy arises from torsional cycles in a type IIB compactification. A class of monomial potentials is ob…
A New Instability of the Topological black hole
Alexandre Belin, Alexander Maloney
We investigate the stability of massless topological black holes in AdS_d when minimally coupled to a scalar field of negative mass-squared. In many cases such black holes are unst…
Monopoles, Dirac operator and index theory for fuzzy
Nirmalendu Acharyya, Verónica Errasti Díez
The intersection of the 10-dimensional fuzzy conifold with is the compact 8-dimensional fuzzy space . We show that is (the analogue o…