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14 papers · 2 filters
Gauge field production in SUGRA inflation: local non-Gaussianity and primordial black holes
Andrei Linde, Sander Mooij, Enrico Pajer
When inflation is driven by a pseudo-scalar field χcoupled to vectors as α/4 χF \tilde F, this coupling may lead to a copious production of gauge quanta, which in turns induces non…
Going beyond the Standard Model with noncommutative geometry
Thijs van den Broek, Walter D. van Suijlekom
The derivation of the full Standard Model from noncommutative geometry has been a promising sign for possible applications of the latter in High Energy Physics. Many believe, howev…
Holographic Renormalisation for the Spin-3 Theory and the (A)dS3/CFT2 correspondence
Shailesh Lal, Bindusar Sahoo
We compute the two-point correlation functions for the spin-3 theory in three dimensional (Anti-) de Sitter spacetimes by using holographic renormalisation. For the AdS case, we fi…
Nonlinear sigma models with AdS supersymmetry in three dimensions
Daniel Butter, Sergei M. Kuzenko, Gabriele Tartaglino-Mazzucchelli
In three-dimensional anti-de Sitter (AdS) space, there exist several realizations of N-extended supersymmetry, which are traditionally labelled by two non-negative integers p>=q su…
On the positivity of black hole degeneracies in string theory
Kathrin Bringmann, Sameer Murthy
Certain helicity trace indices of charged states in N=4 and N=8 superstring theory have been computed exactly using their explicit weakly coupled microscopic description. These ind…
All solutions of the localization equations for N=2 quantum black hole entropy
Rajesh Kumar Gupta, Sameer Murthy
We find the most general bosonic solution to the localization equations describing the contributions to the quantum entropy of supersymmetric black holes in four-dimensional N=2 su…