Results 111 to 120 of about 9,349 (162)

Dual Gauged Supergravities [PDF]

open access: yes, 2007
We shall review a novel formulation of four dimensional gauged supergravity which is manifestly covariant with respect to the non-perturbative electric-magnetic duality symmetry transformations of the ungauged theory, at the level of the equations of ...
Trigiante, Mario
core   +1 more source

de Sitter String Vacua from Supersymmetric D-terms

open access: yes, 2003
We propose a new mechanism for obtaining de Sitter vacua in type IIB string theory compactified on (orientifolded) Calabi-Yau manifolds similar to those recently studied by Kachru, Kallosh, Linde and Trivedi (KKLT).
A. Font   +67 more
core   +2 more sources

Large field ranges from aligned and misaligned winding

open access: yesJournal 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

String Vacua with N=2 Supersymmetry in Four Dimensions [PDF]

open access: yes, 1998
In this article we review four-dimensional string vacua with N=2 space-time supersymmetry. In particular, we will discuss several aspects of the string-string duality between the heterotic string, compactified on $K3\times T^2$, and the type II ...
Aldazabal   +91 more
core   +2 more sources

When rational sections become cyclic — Gauge enhancement in F-theory via Mordell-Weil torsion

open access: yesJournal 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

Branes in Anti de Sitter Space-Time [PDF]

open access: yes, 1998
An intense study of the relationship between certain quantum theories of gravity realized on curved backgrounds and suitable gauge theories, has been originated by a remarkable conjecture put forward by Maldacena almost one year ago.
Trigiante, M.
core   +2 more sources

Time Evolution in Superstring Field Theory on non-BPS brane.I. Rolling Tachyon and Energy-Momentum Conservation

open access: yes, 2003
We derive equations of motion for the tachyon field living on an unstable non-BPS D-brane in the level truncated open cubic superstring field theory in the first non-trivial approximation.
A. Sen   +30 more
core   +1 more source

100 years of mathematical cosmology: Models, theories and problems, Part B. [PDF]

open access: yesPhilos Trans A Math Phys Eng Sci, 2022
Cotsakis S, Yefremov AP.
europepmc   +1 more source

Detection of early-universe gravitational-wave signatures and fundamental physics. [PDF]

open access: yesGen Relativ Gravit, 2022
Caldwell R   +37 more
europepmc   +1 more source

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