Results 11 to 20 of about 21,105,413 (272)
Building models of inflation in no-scale supergravity [PDF]
International Journal of Modern Physics D, 2020 After reviewing the motivations for cosmological inflation formulated in the formalism of supersymmetry, we argue that the appropriate framework is that of no-scale supergravity.
J. Ellis +5 more
semanticscholar +6 more sources
Developments in Supergravity Unified Models [PDF]
, 2010 A review is given of developments in supergravity unified models proposed in 1982 and their implications for current and future experiment are discussed.Comment: 24 pages, 1 figure.
Arnowitt, Richard, Nath, Pran
core +3 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
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
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
openalex +4 more sources
Supergravity based inflation models: a review [PDF]
Classical and Quantum Gravity, 2011 In this review, we discuss inflation models based on supergravity. After explaining the difficulties in realizing inflation in the context of supergravity, we show how to evade such difficulties. Depending on types of inflation, we give concrete examples,
't Hooft G +46 more
core +3 more sources
KK Compactification of Supergravity Models
Fundamental Theories of Physics, 2019 In this chapter, we will study the KK compactification of supergravity models in higher dimensions. Supergravity models in higher dimensions have: -a graviton, described by the metric \(g_{\mu \nu }\) (which can be written as \(e^a_\mu \eta _{ab}e^b_\nu \)), except for the coupling to fermions, which is written in terms of \(\omega _\mu ^{ab}(e ...
H. Nastase
semanticscholar +4 more sources
$R_b$ in supergravity models [PDF]
, 1995 We compute the supersymmetric contribution to $R_{b}\equiv \Gamma (Z\to b{\bar b})/\Gamma (Z\to {\rm hadrons})$ in a variety of supergravity models. We find $R^{\rm susy}_b\lsim0.0004$, which does not shift significantly the Standard Model prediction
Lopez, J., Nanopoulos, D., Wang, X.
core +3 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).
Gye T. Park, Kang Young Lee
openalex +4 more sources
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