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Geometrical Construction of Type I Superstring Vacua
, 1997 12 pages, latex, no figures; contribution to the Proceedings of the 12th Italian Conference on General Relativity and Gravitational Physics, Rome, september 23-27 ...
Gianfranco Pradisi
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, 2023 In a multi-fold universe, gravity emerges from Entanglement through the multi-fold mechanisms. As a result, gravity-like effects appear in between entangled particles that they be real or virtual. Long range, massless gravity results from entanglement of massless virtual particles.
Stéphane Maes
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Symmetries on the Space of (2, 2) Superstring Vacua and Automorphism Groups of Calabi-Yau Manifolds [PDF]
Progress of Theoretical Physics Supplement, 1990 Symmetry groups on 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 symmetries on the resolution of isolated singularities of superpotentials ...
Amit Giveon, Dirk-Jan Smit
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Anomalous U(1)s in Type I superstring vacua [PDF]
Nuclear Physics B, 2002 We perform a systematic string computation of the masses of anomalous U(1) gauge bosons in four-dimensional orientifold vacua, and we study their localization properties in the internal (compactified) space. We find that N=1 supersymmetric sectors yield four-dimensional contributions, localized in the whole six-dimensional internal space, while N=2 ...
I. Antoniadis, Elias Kiritsis, J. Rizos
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On
Advances in High Energy Physics, 2011 We compute one-loop threshold corrections toℛ4terms inN=5,6supergravity vacua of Type II superstrings. We then discuss nonperturbative corrections generated by asymmetric D-brane instantons. Finally we derive generating functions for MHV amplitudes at tree level inN=5,6supergravities.
Massimo Bianchi
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Cosmological implications of domain walls due to duality invariant moduli sector of superstring vacua [PDF]
Physics Letters B, 1992 10p., 3 figures, not included, minor wording ...
Mirjam Cvetič, Richard L. Davis
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Classification of flat directions in perturbative heterotic superstring vacua with anomalous U(1) [PDF]
Nuclear Physics B, 1998 26 ...
Gerald Cleaver +4 more
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On R^4 terms and MHV amplitudes in N = 5,6 supergravity vacua of Type II superstrings
Advances in High Energy Physics, 2010 19 ...
Massimo Bianchi
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Symmetries of cosmological superstring vacua [PDF]
Physics Letters B, 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 ...
Krzysztof A. Meissner +1 more
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Quaternionic manifolds for type II superstring vacua of Calabi-Yau spaces [PDF]
Nuclear Physics B, 1990 Abstract In type II theories compactified on Calabi-Yau manifolds the moduli fields are accompanied by (Ramond-Ramond) scalar superpartners. N = 2 space-time supersymmetry requires the low-energy effective mutual interaction of these excitations be described by a quaternionic σ-model in target space.
S. Ferrara, S. Sabharwal
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