7 papers
D1/D5 systems in string theories
E. Gava, A. B. Hammou, J. F. Morales +1
We propose CFT descriptions of the D1/D5 system in a class of freely acting Z_2 orbifolds/orientifolds of type IIB theory, with sixteen unbroken supercharges. The CFTs describing D…
Anomalies & Tadpoles
Massimo Bianchi, Jose F. Morales
We show that massless RR tadpoles in vacuum configurations with open and unoriented strings are always related to anomalies. RR tadpoles arising from sectors of the internal SCFT w…
On the perturbative corrections around D-string instantons
E. Gava, A. Hammou, J. F. Morales +1
We study -threshold corrections in an eight dimensional S-dual pair of string theories, as a prototype of dual string vacua with sixteen supercharges. We show that the…
Spin dependent D-brane interactions and scattering amplitudes in matrix theory
J. F. Morales, J. C. Plefka, C. A. Scrucca +2
Spin interactions beteween two moving Dp-branes are analyzed using the Green-Schwarz formalism of boundary states. This approach turns out to be extremely efficient to compute all…
D-strings in unconventional type I vacuum configurations
M. Bianchi, E. Gava, J. F. Morales +1
We determine the spectrum of D-string bound states in various classes of generalized type I vacuum configurations with sixteen and eight supercharges. The precise matching of the B…
Bound States of Type I D-Strings
E. Gava, J. F. Morales, K. S. Narain +1
We study the infra-red limit of the O(N) gauge theory that describes the low energy modes of a system of type I D-strings and provide some support to the conjecture that, in th…