Results 1 to 10 of about 20,674,433 (271)
Quintessence models in supergravity [PDF]
Physical Review D, 2000 Scalar field models of quintessence typically require that the expectation value of the field today is of order the Planck mass, if we want them to explain the observed acceleration of the Universe.
Edmund J. Copeland +2 more
core +7 more sources
Minimal Supergravity Models of Inflation [PDF]
Physical Review D, 2013 We present a superconformal master action for a class of supergravity models with one arbitrary function defining the Jordan frame. It leads to a gauge-invariant action for a real vector multiplet, which upon gauge fixing describes a massive vector ...
S. Ferrara +3 more
semanticscholar +6 more sources
Fine-tuning constraints on supergravity models [PDF]
Physics Letters B, 2000 We discuss fine-tuning constraints on supergravity models. The tightest constraints come from the experimental mass limits on two key particles: the lightest CP even Higgs boson and the gluino. We also include the lightest chargino which is relevant when
Mar Bastero-Gil +2 more
core +5 more sources
Multi-Field versus Single-Field in the Supergravity Models of Inflation and Primordial Black Holes
Universe, 2021 We review the models unifying inflation and Primordial Black Hole (PBH) formation, which are based on the modified (Starobinsky-type) supergravity. We begin with the basic (Starobinsky) inflationary model of modified gravity and its alpha-attractor-type ...
Sergei V. Ketov
doaj +2 more sources
Glueball mass spectra and other issues for supergravity duals of QCD models [PDF]
, 1999 We derive WKB expressions for glueball masses of various finite temperature supergravity models. The results are very close to recent numerical computations.
Joseph A. Minahan
openalex +6 more sources
Strongest experimental constraints on SU(5)×U(1) supergravity models [PDF]
Physical Review D, Particles and fields, 1994 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 ...
Jorge L. Lopez +3 more
openalex +3 more sources
SUSY breaking after inflation in supergravity with inflaton in a massive vector supermultiplet [PDF]
Physics Letters B, 2016 We propose a limited class of models, describing interacting chiral multiplets with a non-minimal coupling to a vector multiplet, in curved superspace of N=1 supergravity. Those models are suitable for the inflationary model building in supergravity with
Yermek Aldabergenov, Sergei V. Ketov
doaj +4 more sources
Reach of Fermilab Tevatron upgrades for SU(5) supergravity models with nonuniversal gaugino masses [PDF]
, 2000 We explore the reach of luminosity upgrades of the Fermilab Tevatron collider for SU(5) supergravity models in which non-universal GUT-scale gaugino masses arise via a vacuum expectation value for the auxiliary component of a superfield that transforms ...
Greg W. Anderson +4 more
openalex +3 more sources
Classical Yang-Baxter equation from β-supergravity
Journal of High Energy Physics, 2019 Yang-Baxter deformations of superstring σ-models have recently inspired a supergravity solution generating technique. Using the open/closed string map and a Killing bi-vector as a deformation parameter, new solutions can be built, such that the ...
Ilya Bakhmatov, Edvard T. Musaev
doaj +3 more sources
Double-copy towards supergravity inflation with α-attractor models [PDF]
Journal of High Energy Physics, 2022 Key to the simplicity of supergravity α -attractor models of inflation are Volkov-Akulov fermions, often in the form of nilpotent superfields. Here we explore the possibility of using the double-copy to construct theories of Dirac-Born-Infeld-Volkov ...
J. J. Carrasco +2 more
semanticscholar +1 more source