Results 1 to 10 of about 21,105,413 (272)
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
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
On the topology of the inflaton field in minimal supergravity models [PDF]
Journal of High Energy Physics, 2013 A bstractWe consider global issues in minimal supergravity models where a single field inflaton potential emerges. In a particular case we reproduce the Starobinsky model and its description dual to a certain formulation of R + R2 supergravity.
S. Ferrara, P. Fré, A. Sorin
semanticscholar +8 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
Enriques and octonionic magic supergravity models [PDF]
Journal of High Energy Physics, 2008 We reconsider the Enriques Calabi Yau (FHSV) model and its string derivation and argue that the Octonionic magic supergravity theory admits a string interpretation closely related to the Enriques model.
Massimo Bianchi, S. Ferrara
semanticscholar +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 +5 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
Supergravity Unified Models [PDF]
, 1997 The development of supergravity unified models and their implications for current and future experiments are discussed.Comment: Latex, 21 pages, to appear in book "Perspectives on Supergravity", World Scientific, Editor G.
Arnowitt, R., Nath, Pran
core +4 more sources
On sgoldstino-less supergravity models of inflation [PDF]
Journal of High Energy Physics, 2014 A bstractWe go a step further in the search for a consistent and realistic supergravity model of large-field inflation by building a class of models with the following features: during slow-roll, all the scalar fields other than the inflaton are frozen ...
G. Dall’Agata, F. Zwirner
semanticscholar +6 more sources
Supergravity solution-generating techniques and canonical transformations of σ-models from O(D, D) [PDF]
Journal of High Energy Physics, 2021 Within the framework of the flux formulation of Double Field Theory (DFT) we employ a generalised Scherk-Schwarz ansatz and discuss the classification of the twists that in the presence of the strong constraint give rise to constant generalised fluxes ...
Riccardo Borsato, Sibylle Driezen
doaj +2 more sources