309 citations
- Consejo Superior de Investigaciones CientíficasES52 papers
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7 papers · 1 filter
Free Fermion Orientifolds
Elias Kiritsis, Michael Lennek, Bert Schellekens
We investigate a class of orientifold models based on tensor products of 18 Ising models. Using the same search criteria as for the comparable case of Gepner model orientifolds we…
Non-supersymmetric Orientifolds of Gepner Models
B. Gato-Rivera, A. N. Schellekens
Starting from a previously collected set of tachyon-free closed strings, we search for N=2 minimal model orientifold spectra which contain the standard model and are free of tachyo…
Non-supersymmetric Tachyon-free Type-II and Type-I Closed Strings from RCFT
B. Gato-Rivera, A. N. Schellekens
We consider non-supersymmetric four-dimensional closed string theories constructed out of tensor products of N=2 minimal models. Generically such theories have closed string tachyo…
The Adapted Ordering Method for Lie Algebras and Superalgebras and their Generalizations
Beatriz Gato-Rivera
In 1998 the Adapted Ordering Method was developed for the representation theory of the superconformal algebras in two dimensions. It allows: to determine maximal dimensions for a g…
Instanton Induced Neutrino Majorana Masses in CFT Orientifolds with MSSM-like spectra
L. E. Ibanez, A. N. Schellekens, A. M. Uranga
Recently it has been shown that string instanton effects may give rise to neutrino Majorana masses in certain classes of semi-realistic string compactifications. In this paper we m…
Scaling Phenomena in Gravity from QCD
Luis Alvarez-Gaume, Cesar Gomez, Miguel A. Vazquez-Mozo
We present holographic arguments to predict properties of strongly coupled gravitational systems in terms of weakly coupled gauge theories. In particular we relate the latest compu…