14.2k citations
Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- University of Rome Tor VergataIT2.7k papers
- Istituto Nazionale di Fisica Nucleare, Sezione di Roma IIT2.4k papers
- Centre National de la Recherche ScientifiqueFR2.4k papers
- Institut National de Physique Nucléaire et de Physique des ParticulesFR2.2k papers
- Istituto Nazionale di Fisica Nucleare, Sezione di PisaIT2.2k papers
- Istituto Nazionale di Fisica Nucleare, Laboratori Nazionali di FrascatiIT2k papers
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- University of GlasgowGB2k papers
- National Institute for Subatomic PhysicsNL1.9k papers
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8 papers · 2 filters
Type I Vacua from Diagonal -Orbifolds
Gianfranco Pradisi
We discuss the open descendants of diagonal irrational orbifolds, starting from the case and analyzing six-dimensional and four-dimensional models. As recently argued,…
Fivebrane instantons and higher derivative couplings in type I theory
Amine B. Hammou, Jose F. Morales
We express the infinite sum of D-fivebrane instanton corrections to couplings in type I string vacua, in terms of an elliptic index counting 1/2-BPS excit…
D-branes on Fourfolds with Discrete Torsion
Subir Mukhopadhyay, Koushik Ray
We study D1-branes on the fourfold $\C^4/(\Z_2\times\Z_2\times\Z_2)$, in the presence of discrete torsion. Discrete torsion is incorporated in the gauge theory of the D1-branes by…
Discrete torsion in non-geometric orbifolds and their open-string descendants
Massimo Bianchi, Jose' F. Morales, Gianfranco Pradisi
We discuss some Z_N^L x Z_N^R orbifold compactifications of the type IIB superstring to D= 4,6 dimensions and their type I descendants. Although the Z_N^L x Z_N^R generators act as…
Brane Supersymmetry Breaking
I. Antoniadis, E. Dudas, A. Sagnotti
We show how to construct chiral tachyon-free perturbative orientifold models, where supersymmetry is broken at the string scale on a collection of branes while, to lowest order, th…
Open Descendants of Z_2\times Z_2 Freely-Acting Orbifolds
I. Antoniadis, G. D'Appollonio, E. Dudas +1
We discuss Z_2 \times Z_2 orientifolds where the orbifold twists are accompanied by shifts on momentum or winding lattice states. The models contain variable numbers of D5 branes,…
Candidates for anti-de Sitter Horizons
Koushik Ray
We find, from the toric description of the moduli space of D3-branes on non-compact six-dimensional singularities $\C^3/\Z_3$ and $\C^3/\Z_5$ in the blown-down limit, the four-dime…
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…