Results 61 to 70 of about 21,399,211 (273)
Chargino production at LEP2 in a supergravity model [PDF]
Physics Letters B, 1996 11 pages, latex, 4 figures ...
Diaz, Marco A., King, Steve F.
openaire +2 more sources
Hyper-dilaton Weyl multiplet of 4D, N $$ \mathcal{N} $$ = 2 conformal supergravity
Journal of High Energy Physics, 2022 We define a new dilaton Weyl multiplet of N $$ \mathcal{N} $$ = 2 conformal supergravity in four dimensions. This is constructed by reinterpreting the equations of motion of an on-shell hypermultiplet as constraints that render some of the fields of the ...
Gregory Gold +3 more
doaj +1 more source
Symplectic Deformations of Gauged Maximal Supergravity [PDF]
, 2014 We identify the space of symplectic deformations of maximal gauged supergravity theories. Coordinates of such space parametrize inequivalent supergravity models with the same gauge group.
Dall'Agata, Gianguido +2 more
core +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
Quintessence with two energy scales [PDF]
, 2001 We study quintessence models using low energy supergravity inspired from string theory. We consider effective supergravity with two scales m_S, the string scale, and m_PL, the Planck scale and show that quintessence naturally arises from a supersymmetry ...
A. Balbi +41 more
core +2 more sources
The inflatino problem in supergravity inflationary models [PDF]
Physics Letters B, 2001 We consider the potential problems due to the production of inflatinos and gravitinos after inflation. Inflationary models with a single scale set by the microwave background anisotropies have a low enough reheat temperature to avoid problems with the thermal production of gravitinos.
Nilles H. P., Olive K. A., Peloso M.
openaire +4 more sources
Supergravity backgrounds of the η-deformed AdS2 × S2 × T6 and AdS5 × S5 superstrings
Journal of High Energy Physics, 2019 We construct supergravity backgrounds for the integrable η-deformations of the AdS2 × S2 × T6 and AdS5 × S5 superstring sigma models. The η-deformation is governed by an R-matrix that solves the non-split modified classical Yang-Baxter equation on the ...
Ben Hoare, Fiona K. Seibold
doaj +1 more source
Non-abelian fermionic T-duality in supergravity
Journal of High Energy Physics, 2021 Field transformation rules of the standard fermionic T-duality require fermionic isometries to anticommute, which leads to complexification of the Killing spinors and results in complex valued dual backgrounds.
Lev Astrakhantsev +2 more
doaj +1 more source
On Nonstandard Vacuua in Minimal Supergravity Models [PDF]
Journal of High Energy Physics, 2003 The plethora of scalar fields participating in the formulation of a softly broken supersymmetric theory can threat the stability of the standard vacuum. The generic situation is twofold. Directions in scalar field space may exist along which the potential becomes unbounded from below or local minima deeper than the standard one are likely to appear ...
Gioutsos, D. V., Vayonakis, C. E.
openaire +3 more sources
Swampland conjectures for type IIB orientifolds with closed-string U(1)s
Journal of High Energy Physics, 2020 We study the weak gravity conjecture, the swampland distance conjecture and the emergence proposal for N $$ \mathcal{N} $$ = 1 orientifold compactifications of type IIB string theory with O3-/O7-planes. We allow for orientifold projections with h + 2 , 1
Martín Enríquez Rojo, Erik Plauschinn
doaj +1 more source