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hep-th2007★ 91 cited

Towards an S-matrix Description of Gravitational Collapse

D. Amati, M. Ciafaloni, G. Veneziano

Extending our previous results on trans-Planckian () scattering of light particles in quantum string-gravity we present a calculation of the corresponding S-matrix fr…

hep-th2007★ 27 cited

On the geometry and the moduli space of beta-deformed quiver gauge theories

Agostino Butti, Davide Forcella, Luca Martucci +3

We consider a class of super-conformal beta-deformed N=1 gauge theories dual to string theory on with fluxes, where is a deformed Sasaki-Einstein manifold. The…

hep-th2007★ 16 cited

On the stability of thick brane worlds non-minimally coupled to gravity

A. A. Andrianov, Luca Vecchi

We analyze a class of 5D models where a 3 brane is generated by a bulk scalar field non minimally coupled to gravity. We show that perturbative stability of such branes is normally…

hep-th2007★ 11 cited

Positive Energy Representations, Holomorphic Discrete Series and Finite-Dimensional Irreps

V. K. Dobrev

Let G be a semi-simple non-compact Lie group with unitary lowest/highest weight representations. We consider explicitly the relation between three types of representations of G: po…

hep-th2007★ 11 cited

On interactions of higher spin fields with gravity and branes in AdS_5

Cristiano Germani, Arabella Schelpe

We construct actions of higher spin fields interacting with gravity on AdS_5 backgrounds such that the Compton scattering amplitudes of the interaction are tree-level unitary. We t…

hep-th2007★ 19 cited

Isomorphism of critical and off-critical operator spaces in two-dimensional quantum field theory

G. Delfino, G. Niccoli

For the simplest quantum field theory originating from a non-trivial fixed point of the renormalization group, the Lee-Yang model, we show that the operator space determined by the…