arXiv subjects

Pedro J. Silva

Publications and source records attributed to Pedro J. Silva.

41 records · Page 3Linked to original sources

arXiv1999

T-duality and Gauge Theories from Near Horizon Dp-branes

We study the significance of T-duality in the context of the gravitational description of gauge theories. We found that T-duality relates the deferents points of the moduli of a given gauge theory always far from the conformal fixed point. Also the described gauge theories seems to flow naturally to the able conformal points, those that naturally saturate all the possible known examples of near horizon geometries. Supersymmetry properties and T-duality breaking of it are discuss.

hep-th↗

arXiv1999

T-duality and The Gravitational Description Of Gauge Theories

This is a review of some basic features on the relation between supergravity and pure gauge theories with special emphasis on the relation between T-duality and supersymmetry. Some new results concerning the interplay between T-duality and near horizon geometries are presented

hep-th↗

arXiv1998

On the relation of Matrix theory and Maldacena conjecture

We report a sign that M(atrix) theory conjecture and the Maldacena conjecture for the case of D0-branes are compatible. Furthermore Maldacena point of view implies a restriction of range of validity in the DLCQ version of M(atrix) theory. The analysis is based on the uplift of type IIA supersymetric solution in the Maldacena approach to eleven dimensions, using a boost as a main tool. The relation is explored on both, IMF and DLCF versions of M(atrix) theory

hep-th↗

arXiv1997

General D-branes solutions from string theory

We give the general solution for the elementary and solitonic D-brane configurations as a result of a reinterpretation of the already known p-branes. These solutions are found by means of a relevant conformal transformation on the string inspired action and its dual form. From this point of view, the nature of the electric and magnetic charge is clearer and the elementary and solitonic behaviour dependence on the initial lagrangian set. We give a complete characterisation of the spacetime defined by these solutions. The dual pair of instanton and 7-brane solution is presented as an example.

hep-th↗

arXiv1996

BRST Invariant Boundary Conditions for Gauge Theories

A systematic way of generating sets of local boundary conditions on the gauge fields in a path integral is presented. These boundary conditions are suitable for one--loop effective action calculations on manifolds with boundary and for quantum cosmology. For linearised gravity, the general proceedure described here leads to new sets of boundary conditions.

gr-qc↗