Results 1 to 10 of about 683 (126)

Flux Vacua and Branes of the Minimal Superstring [PDF]

open access: yesJournal of High Energy Physics, 2005
We analyze exactly the simplest minimal superstring theory, using its dual matrix model. Its target space is one dimensional (the Liouville direction), and the background fields include a linear dilaton, a possible tachyon condensate, and RR flux. The theory has both charged and neutral branes, and these exhibit new and surprising phenomena. The smooth
David Shih, Nathan Seiberg
exaly   +3 more sources

Symmetries of cosmological superstring vacua [PDF]

open access: yesPhysics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, 1991
Abstract The concept of discrete scale-factor-duality transformations is extended to a full, continuous O(d, d) group. The action of the group transforms “cosmological” solutions of the low-energy, string-modified Einstein equations (including non-trivial dilaton and antisymmetric tensor fields) into other solutions, thus representing the natural ...
K.A. Meissner, G. Veneziano
exaly   +2 more sources

The “landscape” of Pati–Salam heterotic superstring vacua [PDF]

open access: yesFortschritte Der Physik, 2010
AbstractThe main aspects of a recently developed method for classification of heterotic superstring vacua in the Free Fermionic Formulation are presented. Using these techniques we classify a big number of approximately 1015 heterotic string vacua with Pati–Salam, SU(4) × SU(2)L × SU(2)R gauge symmetry with respect to their main phenomenological ...
exaly   +5 more sources

Non-perturbative stability of supergravity and superstring vacua

open access: yesNuclear Physics B, 1993
25 pages NSF-ITP-92-84, UPR-494-T, YCTP-P44 ...
Soo-Jong Rey   +2 more
exaly   +3 more sources

Geometry and Quantum Symmetries of Superstring Vacua [PDF]

open access: yes, 1992
We report on some recent progress which has been made in the understanding of general features of superstring compactifications. The following aspects are discussed: special geometry of the moduli space of (2,2) vacua, target-space duality symmetries, differential equations for the periods of holomorphic three-forms, and higher loop (genus) string ...
Ferrara S
exaly   +2 more sources

Superstring Vacua of 4-dimensional PP-Waves with Enhanced Supersymmetry [PDF]

open access: yesJournal of High Energy Physics, 2002
We study the superstring vacua constructed from the conformal field theories of the type H_4 x M, where H_4 denotes the super Nappi-Witten model (super WZW model on the 4-dimensional Heisenberg group H_4) and M denotes an arbitrary N=2 rational superconformal field theory with c=9.
Yasuaki Hikida, Yuji Sugawara
exaly   +3 more sources

New N=1 supersymmetric 3-dimensional superstring vacua from U-manifolds [PDF]

open access: yesPhysics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, 1998
12 pages ...
Gottfried Curio
exaly   +3 more sources

Symmetries on the moduli space of (2,2) superstring vacua

open access: yesNuclear Physics B, 1991
Abstract Symmetries of the space of (2,2) string vacua for c = 3, 6, 9 are discussed in the context of orbifoldized Landau-Ginzburg theories. A general method for finding the maximal symmetry groups on the moduli space of untwisted marginal operators is presented, by studying deformations of superpotentials.
Amit Giveon
exaly   +2 more sources

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