Results 1 to 10 of about 20,804,533 (246)
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 multiplet, or to a dual formulation with a linear multiplet and a massive tensor field. In both cases the
Sergio Ferrara +3 more
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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. This suggests that we should be considering models in the context of supergravity.
Edmund J. Copeland +2 more
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Tree level supergravity and the Matrix model [PDF]
Nuclear Physics B, 2000 It has recently been shown that the Matrix model and supergravity give the same predictions for three graviton scattering. This contradicts an earlier claim in the literature (hep-th/9710174). We explain the error in this earlier work, and go on to show that certain terms in the $n$-graviton scattering amplitude involving $v^{2n}$ are given correctly ...
Michael Dine +2 more
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WMAP and supergravity inflationary models [PDF]
Physical Review D, 2004 7 pages, 4 eps figures, references corrected, version to appear in Phys.
M. C. Bento +2 more
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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 universal gaugino masses are assumed. For each of these particles we show how fine-tuning increases
Mar Bastero-Gil +2 more
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Updated Constraints on the Minimal Supergravity Model [PDF]
Journal of High Energy Physics, 2002 Recently, refinements have been made on both the theoretical and experimental determinations of the i.) mass of the lightest Higgs scalar, ii.) relic density of cold dark matter in the universe, iii.) branching fraction for radiative B decay BF(b \to s ), iv.) muon anomalous magnetic moment, and v.) flavor violating decay B_s \to ^+ ^-.
Howard Baer +5 more
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Testing primordial black holes as dark matter in supergravity from gravitational waves
Physics Letters B, 2021 We explore the Gravitational Waves (GW) phenomenology of a simple class of supergravity models that can explain and unify inflation and Primordial Black Holes (PBH) as Dark Matter (DM).
Yermek Aldabergenov +2 more
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Component decompositions and adynkra libraries for supermultiplets in lower dimensional superspaces
Journal of High Energy Physics, 2021 We present Adynkra Libraries that can be used to explore the embedding of multiplets of component field (whether on-shell or partial on-shell) within Salam-Strathdee superfields for theories in dimension nine through four.
S. James Gates +2 more
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Supergravities and branes from Hilbert-Poincaré series
Journal of High Energy Physics, 2023 The Molien-Weyl integral formula and the Hilbert-Poincaré series have proven to be powerful mathematical tools in relation to gauge theories, allowing to count the number of gauge invariant operators.
C. A. Cremonini +3 more
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Journal of High Energy Physics, 2021 Within the framework of N $$ \mathcal{N} $$ = 1 anti-de Sitter (AdS) supersymmetry in four dimensions, we derive superspin projection operators (or superprojectors). For a tensor superfield V α m α ⋅ n ≔ V α 1 … αm α ⋅ 1 … α ⋅ n $$ {\mathfrak{V}}_{\alpha
E. I. Buchbinder +3 more
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