Showing 2000 · hep-thShow all

8 papers · 2 filters

hep-th2000★ 9 cited

A note on the torsion dependence of D-brane RR couplings

Claudio A. Scrucca, Marco Serone

The dependence on the torsion H=db of the Wess-Zumino couplings of D-branes that are trivially embedded in space-time is studied. We show that even in this simple set-up some torsi…

hep-th2000★ 202 cited

Supersymmetric Conical Defects: Towards a string theoretic description of black hole formation

Vijay Balasubramanian, Jan de Boer, Esko Keski-Vakkuri +1

Conical defects, or point particles, in AdS_3 are one of the simplest non-trivial gravitating systems, and are particularly interesting because black holes can form from their coll…

hep-th2000★ 5 cited

Simple models with Alice fluxes

J. Striet, F. A. Bais

We introduce two simple models which feature an Alice electrodynamics phase. In a well defined sense the Alice flux solutions we obtain in these models obey first order equations s…

hep-th2000★ 35 cited

One-point functions in perturbed boundary conformal field theories

P. Dorey, M. Pillin, R. Tateo +1

We consider the one-point functions of bulk and boundary fields in the scaling Lee-Yang model for various combinations of bulk and boundary perturbations. The one-point functions o…

hep-th2000★ 12 cited

Sigma-model symmetry in orientifold models

Claudio A. Scrucca, Marco Serone

We investigate in the simplest compact D=4 N=1 Type IIB orientifold models the sigma-model symmetry suggested by the proposed duality of these models to heterotic orbifold vacua. T…

hep-th2000★ 30 cited

On the stringy nature of winding modes in noncommutative thermal field theories

G. Arcioni, J. L. F. Barbon, Joaquim Gomis +1

We show that thermal noncommutative field theories admit a version of `channel duality' reminiscent of open/closed string duality, where non-planar thermal loops can be replaced by…

hep-th2000★ 33 cited

New families of flows between two-dimensional conformal field theories

Patrick Dorey, Clare Dunning, Roberto Tateo

We present evidence for the existence of infinitely-many new families of renormalisation group flows between the nonunitary minimal models of conformal field theory. These are asso…

hep-th2000★ 27 cited

Initial Conditions and the Structure of the Singularity in Pre-Big-Bang Cosmology

A. Feinstein, K. E. Kunze, M. A. Vazquez-Mozo

We propose a picture, within the pre-big-bang approach, in which the universe emerges from a bath of plane gravitational and dilatonic waves. The waves interact gravitationally bre…