Results 101 to 110 of about 9,349 (162)

Octonionic Magical Supergravity, Niemeier Lattices, and Exceptional & Hilbert Modular Forms

Fortschritte der Physik, Volume 72, Issue 2, February 2024.
Abstract The quantum degeneracies of Bogomolny‐Prasad‐Sommerfield (BPS) black holes of octonionic magical supergravity in five dimensions are studied. Quantum degeneracy is defined purely number theoretically as the number of distinct states in charge space with a given set of invariant labels.
Murat Günaydin, Abhiram Kidambi
wiley   +1 more source

A note on O6 intersections in AdS flux vacua

Journal of High Energy Physics
The DGKT-CFI construction of AdS flux vacua in type IIA string theory has interesting features such as classical moduli stabilization and a parametric scale separation between the Hubble scale and the Kaluza-Klein scale.
Daniel Junghans
doaj   +1 more source

On scale separation in type II AdS flux vacua

Journal of High Energy Physics, 2020
We study the separation of AdS and Kaluza-Klein (KK) scales in type II 4d AdS orientifold vacua. We first address this problem in toroidal/orbifold type IIA vacua with metric fluxes, corresponding to compactifications in twisted tori, both from the 4d ...
Anamaría Font, Alvaro Herráez, Luis E. Ibáñez   +2 more
doaj   +1 more source

Anomalous U(1)s in Type I superstring vacua

, 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 ...
Antoniadis, I., Kiritsis, E., Rizos, J.
openaire   +2 more sources

An index for flux vacua

Journal of High Energy Physics
We propose to use the winding number of the gradient of a scalar potential as a simple topological index that relates critical points in the interior of the scalar field space to the behavior of the potential at the (asymptotic) boundary of the field ...
Severin Lüst
doaj   +1 more source

Symmetry points of N = 1 $$ \mathcal{N}=1 $$ modular geometry

Journal of High Energy Physics
We consider 4d N = 1 $$ \mathcal{N}=1 $$ supergravity theories with modular symmetry, where the modulus τ is the upper half-plane modulo SL(2, Z) action.
Amineh Mohseni, Cumrun Vafa
doaj   +1 more source

Neutrino Masses within the Minimal Supersymmetric Standard Model

, 1992
We investigate the possibility of accommodating neutrino masses compatible with the MSW study of the Solar neutrino deficit within the minimal supersymmetric Standard Model.
A. Font, A. Font, B. Green, B. Green, B. Greene, D. Gepner, E. Witten, E. Witten, J. Ellis, L. Dixon, L. Ibañez, L. Wolfenstein, L. Wolfenstein, M. Cvetič, M. Cvetič, M. Cvetič, M. Dine, M. Gell-Mann, Mirjam Cvetič, P. Ginsparg, P. Langacker, P. Langacker, Paul Langacker, S. Bludman, S. Bludman, S. Nandi, S. P. Mikheyev, S. P. Mikheyev, T. Yanagida, U. Amaldi, V. Kaplunovsky   +30 more
core   +2 more sources

A positive metric over DGKT vacua

Journal of High Energy Physics
We study the notion of a metric over the space of AdS solution in string theory, leading to an associated distance between them. Such a distance is the idea underlying the AdS distance conjecture.
Eran Palti, Nicolò Petri
doaj   +1 more source

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 ...
openaire   +2 more sources

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, David Prieto, Joan Quirant, Pramod Shukla   +3 more
doaj   +1 more source