Results 21 to 30 of about 20,674,433 (271)
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
openalex +7 more sources
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
openalex +5 more sources
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
doaj +1 more source
Supergravity EFTs and swampland constraints [PDF]
Proceedings of Corfu Summer Institute 2022 "School and Workshops on Elementary Particle Physics and Gravity" — PoS(CORFU2022), 2023 In these proceedings, we review recent progress in analyzing the behavior of lower-dimensional supergravity theories when combined with swampland conjectures. We show that within supergravity the effectiveness and usefulness of swampland conjectures gets
N. Cribiori, F. Farakos
semanticscholar +1 more source
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
doaj +1 more source
1D Supergravity FLRW Model of Starobinsky [PDF]
Universe, 2021 We study two homogeneous supersymmetric extensions for the f(R) modified gravity model of Starobinsky with the FLRW metric. The actions are defined in terms of a superfield R that contains the FLRW scalar curvature. One model has N = 1 local supersymmetry, and its bosonic sector is the Starobinsky action; the other action has N = 2, its bosonic sector ...
Nephtalí E. Martínez-Pérez +2 more
openaire +4 more sources
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
doaj +1 more source
Jackiw-Teitelboim supergravity, minimal strings, and matrix models
, 2021 The author studies a family of two-dimensional Jackiw--Teitelboim (JT) supergravites, and, by using string theory techniques, he gives them a complete definition to all orders in the topological expansion.
Clifford V. Johnson
semanticscholar +1 more source
Baryogenesis in supergravity inflationary models [PDF]
Physics Letters B, 1985 Realistic N=1 supergravity theories with a gravitino mass of order 1 TeV require a period of inflation to dilute the gravitino abundance. Moreover, if the gravitino is unstable the reheat temperature is bounded to be no greater than O(108 GeV). We show that such models may still have acceptable rates of baryosynthesis and discuss possible mechanisms.
Department of Theoretical Physics Keble Road, Oxford OX1 3NP, UK ( host institution ) +6 more
openaire +5 more sources
Journal of High Energy Physics, 2021 We explicitly compute the component action of certain recently discovered new N $$ \mathcal{N} $$ = 1 supergravity actions which enlarge the space of scalar potentials allowed by supersymmetry and also contain fermionic interaction terms that become ...
Hun Jang, Massimo Porrati
doaj +1 more source