Spinor-vector duality in fermionic Z(2) x Z(2) heterotic orbifold models
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Ημερομηνία
Συγγραφείς
Faraggi, A. E.
Kounnas, C.
Rizos, J.
Τίτλος Εφημερίδας
Περιοδικό ISSN
Τίτλος τόμου
Εκδότης
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Είδος δημοσίευσης σε συνέδριο
Είδος περιοδικού
peer reviewed
Είδος εκπαιδευτικού υλικού
Όνομα συνεδρίου
Όνομα περιοδικού
Nuclear Physics B
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Έκδοση βιβλίου
Συμπληρωματικός/δευτερεύων τίτλος
Περιγραφή
We continue the classification of the fermionic Z(2) x Z(2) heterotic string vacua with symmetric internal shifts. The space of models is spanned by working with a fixed set of boundary condition basis vectors and by varying the sets of independent Generalized GSO (GGSO) projection coefficients (discrete torsion). This includes the Calabi-Yau like compactifications with (2, 2) world-sheet superconformal symmetry, as well as more general vacua with only (2, 0) superconformal symmetry. In contrast to our earlier classification that utilized a Monte Carlo technique to generate random sets of GGSO phases, in this paper we present the results of a complete classification of the subclass of the models in which the four-dimensional gauge group arises solely from the null sector. In line with the results of the statistical classification we find a bell shaped distribution that peaks at vanishing net number of generations and with similar to 15% of the models having three net chiral families. The complete classification reveals a novel spinor-vector duality symmetry over the entire space of vacua. The S-t <-> V duality interchanges the spinor plus anti-spinor representations with vector representations. We present the data that demonstrates the spinor-vector duality. We illustrate the existence of a duality map in a concrete example. We provide a general algebraic proof for the existence of the S-t <-> V duality map. We discuss the case of self-dual solutions with an equal number of vectors and spinors, in the presence and absence of E-6 gauge symmetry, and presents a couple of concrete examples of self-dual models without E-6 symmetry. (c) 2007 Elsevier B.V. All rights reserved.
Περιγραφή
Λέξεις-κλειδιά
standard-like model, yau moduli space, string formulation, classification, superstrings, unification, n=2
Θεματική κατηγορία
Παραπομπή
Σύνδεσμος
<Go to ISI>://000247567400008
http://ac.els-cdn.com/S0550321307002490/1-s2.0-S0550321307002490-main.pdf?_tid=1e6e1483de7bd13f2dfc2f1def14e9ac&acdnat=1334230745_272757711146d8d44d5754428c5f90a0
http://ac.els-cdn.com/S0550321307002490/1-s2.0-S0550321307002490-main.pdf?_tid=1e6e1483de7bd13f2dfc2f1def14e9ac&acdnat=1334230745_272757711146d8d44d5754428c5f90a0
Γλώσσα
en
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Γενική Περιγραφή / Σχόλια
Ίδρυμα και Σχολή/Τμήμα του υποβάλλοντος
Πανεπιστήμιο Ιωαννίνων. Σχολή Επιστημών και Τεχνολογιών. Τμήμα Βιολογικών Εφαρμογών και Τεχνολογιών