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13 papers · 2 filters
Covariant Quantization of Superstrings Without Pure Spinor Constraints
P. A. Grassi, G. Policastro, M. Porrati +1
We construct a covariant quantum superstring, extending Berkovits' approach by introducing new ghosts to relax the pure spinor constraints. The central charge of the underlying Kac…
On dimensional regularization of sums
Roberto Contino, Andrea Gambassi
We discuss a systematic way to dimensionally regularize divergent sums arising in field theories with an arbitrary number of physical compact dimensions or finite temperature. The…
Holography of asymmetrically warped space-times
Paolo Creminelli
We study the holographic dual of asymmetrically warped space-times, which are asymptotically AdS. The self-tuning of the cosmological constant is reinterpreted as a cancellation of…
Quest for Localized 4-D Black Holes in Brane Worlds
Panagiota Kanti, Kyriakos Tamvakis
We investigate the possibility of obtaining localized black hole solutions in brane worlds by introducing a dependence of the four-dimensional line--element on the extra dimension.…
Modified Dispersion Relations from Closed Strings in Toroidal Cosmology
Mar Bastero-Gil, Paul H. Frampton, Laura Mersini
A long-standing problem of theoretical physics is the exceptionally small value of the cosmological constant measured in natural Planckian units. Here we derive t…
Holography and the Electroweak Phase Transition
Paolo Creminelli, Alberto Nicolis, Riccardo Rattazzi
We study through holography the compact Randall-Sundrum (RS) model at finite temperature. In the presence of radius stabilization, the system is described at low enough temperature…