Results 31 to 40 of about 683 (126)
The anomaly that was not meant IIB
Fortschritte der Physik, Volume 70, Issue 1, January 2022., 2022 Abstract Type IIB supergravity enjoys a discrete non‐Abelian duality group, which has potential quantum anomalies. In this paper we explicitly compute these, and present the bordism group that controls them, modulo some physically motivated assumptions.
Arun Debray +3 more
wiley +1 more source
Systematics of type IIA moduli stabilisation
Journal of High Energy Physics, 2020 We analyse the flux-induced scalar potential for type IIA orientifolds in the presence of p-form, geometric and non-geometric fluxes. Just like in the Calabi-Yau case, the potential presents a bilinear structure, with a factorised dependence on axions ...
Fernando Marchesano +3 more
doaj +1 more source
Anomalies, dualities, and topology of D = 6 N = 1 superstring vacua [PDF]
Nuclear Physics B, 1996 We consider various aspects of compactifications of the Type I/heterotic $Spin(32)/\Z_2$ theory on K3. One family of such compactifications includes the standard embedding of the spin connection in the gauge group, and is on the same moduli space as the compactification of the heterotic $E_8\times E_8$ theory on K3 with instanton numbers (8,16 ...
Berkooz, Micha +5 more
openaire +2 more sources
Fundamental Units of Measurement and Extra Dimensions
Advances in High Energy Physics, Volume 2022, Issue 1, 2022., 2022 The space available to our perception is three-dimensional with full evidence. The development of physics led to the hypothesis of extra dimensions. It is believed that an important role in the unification of physics should play by the Planck units of mass, length and time, built on the universal constants c (the speed of light in a vacuum), G (the ...
Askar Abdukadyrov, Gaetano Luciano
wiley +1 more source
Large field ranges from aligned and misaligned winding
Journal of High Energy Physics, 2019 We search for effective axions with super-Planckian decay constants in type IIB string models. We argue that such axions can be realised as long winding trajectories in complex-structure moduli space by an appropriate flux choice.
Arthur Hebecker +2 more
doaj +1 more source
Charge completeness and the massless charge lattice in F-theory models of supergravity
Journal of High Energy Physics, 2021 We prove that, for every 6D supergravity theory that has an F-theory description, the property of charge completeness for the connected component of the gauge group (meaning that all charges in the corresponding charge lattice are realized by massive or ...
David R. Morrison, Washington Taylor
doaj +1 more source
When rational sections become cyclic — Gauge enhancement in F-theory via Mordell-Weil torsion
Journal of High Energy Physics, 2018 We explore novel gauge enhancements from abelian to non-simply-connected gauge groups in F-theory. To this end we consider complex structure deformations of elliptic fibrations with a Mordell-Weil group of rank one and identify the conditions under which
Florent Baume +3 more
doaj +1 more source
Stable non-supersymmetric vacua in the moduli space of non-critical superstrings [PDF]
Nuclear Physics B, 2006 We study a set of asymmetric deformations of non-critical superstring theories in various dimensions. The deformations arise as Kaehler and complex structure deformations of an orthogonal two-torus comprising of a parallel and a transverse direction in the near-horizon geometry of NS5-branes.
Harmark, Troels +2 more
openaire +2 more sources
Analytics of type IIB flux vacua and their mass spectra
Journal of High Energy Physics, 2023 We analyze the tree-level potential of type IIB flux compactifications in warped Calabi-Yau orientifolds, in regions of weak coupling and moderately large complex structure.
Thibaut Coudarchet +3 more
doaj +1 more source
From Minkowski to de Sitter in multifield no-scale models
Journal of High Energy Physics, 2019 We show the uniqueness of superpotentials leading to Minkowski vacua of single-field no-scale supergravity models, and the construction of dS/AdS solutions using pairs of these single-field Minkowski superpotentials.
John Ellis +4 more
doaj +1 more source