Results 71 to 80 of about 21,619,463 (236)
Strongest experimental constraints on SU(5) x U(1) supergravity models. [PDF]
Physical Review D, Particles and fields, 1993 We consider a class of well-motivated string-inspired flipped SU(5) supergravity models which include four supersymmetry-breaking scenarios: no-scale, strict no-scale, dilaton, and special dilaton, such that only three parameters are needed to describe ...
López, Nanopoulos, Park, Zichichi
semanticscholar +1 more source
The DNA of Calabi–Yau Hypersurfaces
Fortschritte der Physik, EarlyView.Abstract Genetic Algorithms are implemented for triangulations of four‐dimensional reflexive polytopes, which induce Calabi–Yau threefold hypersurfaces via Batyrev's construction. These algorithms are shown to efficiently optimize physical observables such as axion decay constants or axion–photon couplings in string theory compactifications.
Nate MacFadden +2 more
wiley +1 more source
On AdS4 superspace and supergravity
Journal of High Energy PhysicsIn the N = 1 superspace, AdS4 supersymmetry is realized as the non-linear super coordinate transformations. The fermionic coordinates form a faithful non-linear representation of supersymmetry on their own.
Chen-Xu Han, Zhao-Long Wang, Yi Yan
doaj +1 more source
Supersymmetric dS4 solutions in D = 11 supergravity
Journal of High Energy Physics, 2022 The necessary and sufficient conditions for warped product dS4 solutions in D = 11 supergravity to be supersymmetric are determined. The Killing spinor is associated with two possible stabilizer groups, SU(3) and G2.
M. Di Gioia, J. Gutowski
doaj +1 more source
Supersymmetry and Supergravity: Phenomenology and Grand Unification
, 1993 A survey is given of supersymmetry and supergravity and their phenomenology. Some of the topics discussed are the basic ideas of global supersymmetry, the minimal supersymmetric Standard Model (MSSM) and its phenomenology, the basic ideas of local ...
Arnowitt, R., Nath, Pran
core +2 more sources
New Precision Electroweak Tests in Supergravity Models [PDF]
, 1997 We update the analysis of the precision electroweak tests in terms of 4 epsilon parameters, $\epsilon_{1,2,3,b}$, to obtain more accurate experimental values of them by taking into account the new LEP data released at the 28th ICHEP (1996, Poland).
Altarelli G. +12 more
core +2 more sources
New constraints on supergravity models from b-->s gamma. [PDF]
Physical Review D, Particles and fields, 1994 We perform a detailed study of the constraints from [ital b][r arrow][ital s][gamma] on a large class of supergravity models, including generic four-parameter supergravity models, the minimal SU(5) supergravity model, and SU(5)[times]U(1) supergravity ...
López, Nanopoulos, Wang, Zichichi
semanticscholar +1 more source
Fortschritte der Physik, Volume 74, Issue 1, January 2026.Abstract In this article I consider type II superstring in the pure spinor formulation with constant background fields in the context of T‐dualization. First, I prove that bosonic and fermionic T‐dualization commute using already known T‐dual transformation laws for bosonic and fermionic T‐dualization.
B. Nikolić
wiley +1 more source
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
Higher derivative couplings and massive supergravity in three dimensions
, 2015 We develop geometric superspace settings to construct arbitrary higher derivative couplings (including R^n terms) in three-dimensional supergravity theories with N=1,2,3 by realising them as conformal supergravity coupled to certain compensators. For all
Kuzenko, Sergei M. +2 more
core +1 more source