Results 11 to 20 of about 20,674,433 (271)

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 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

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, M. A. Garcia, N. Nagata, D. Nanopoulos, K. Olive, S. Verner   +5 more
semanticscholar   +6 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

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

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   +5 more sources

Constraints on Supergravity Chaotic Inflationary Models [PDF]

Physics Letters B, 1995
We discuss, in the context of $N=1$ hidden sector non-minimal supergravity chaotic inflationary models, constraints on the parameters of a polynomial superpotential resulting from existing bounds on the reheating temperature and on the amplitude of the ...
Bento, M. C., Bertolami, O.
core   +5 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, Allahverdi R, Antusch S, Arkani-Hamed N, Bailin D, Ballesteros G, Barvinsky A O, Barvinsky A O Kamenshchik A Y Kiefer C Starobinsky A A Steinwachs C F, Bezrukov F, Bezrukov F Magnin A Shaposhnikov M Sibiryakov S, Binetruy P, Chiba T, Chiba T, Dunkley J, Endo M, Ferrara S Kallosh R Linde A Marrani A Van Proeyen A, Germani C, Goncharov A S, Hwang J C, Jeannerot R, Jeannerot R, Kallosh R, Kallosh R Linde A Rube T, Kamada K Kobayashi T Yamaguchi M Yokoyama J, Kaneda S, Ketov S V, Ketov S V Starobinsky A A, Khalil S Rehman M U Shafi Q Zaakouk E A, Khoury J Lehners J L Ovrut B, Kobayashi T Takahashi F, Komatsu E, Lee H M, Lyth D H, Masahide Yamaguchi, Mazumdar A Rocher J, McAllister L Silverstein E Westphal A, Nakayama K, Nakayama K, Nakayama K Takahashi F, Peiris H V, Rocher J, Rocher J, Sato K, Starobinsky A A, Starobinsky A A, Suyama T Takahashi T Yamaguchi M Yokoyama S, Wess J   +46 more
core   +3 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, N. M. C. Santos, Anjan A. Sen   +2 more
openalex   +4 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 ...
R. Borsato, Sibylle Driezen
semanticscholar   +1 more source