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
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Primordial black hole production in inflationary models of supergravity with a single chiral superfield [PDF]
Physical Review D, 2018 We propose a double inflection point inflationary model in supergravity with a single chiral superfield. Such a model allows for the generation of primordial black holes(PBHs) at small scales, which can account for a significant fraction of dark matter ...
T. Gao, Zong‐Kuan Guo
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Jackiw-Teitelboim supergravity, minimal strings, and matrix models [PDF]
, 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
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On the equivalence of Starobinsky and Higgs inflationary models in gravity and supergravity [PDF]
Journal of Physics A: Mathematical and Theoretical, 2020 Starobinsky inflation and Higgs inflation in gravity, and their equivalence based on the common inflationary potential are extended to supergravity in the proper framework, where the Starobinsky and Higgs descriptions of inflation arise in two different ...
Sergei V. Ketov
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Large
Physical Review D, Particles and fields, 1994 We compute the supersymmetric contribution to the anomalous magnetic moment of the muon within the context of $SU(5)\times U(1)$ supergravity models. The largest possible contributions to $a^{susy}_\mu$ occur for the largest allowed values of $\tan\beta$
Jorge L. Lopez +2 more
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Reach of Fermilab Tevatron upgrades for SU(5) supergravity models with nonuniversal gaugino masses [PDF]
, 2000 We explore the reach of luminosity upgrades of the Fermilab Tevatron collider for SU(5) supergravity models in which non-universal GUT-scale gaugino masses arise via a vacuum expectation value for the auxiliary component of a superfield that transforms ...
Greg W. Anderson +4 more
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Classical Yang-Baxter equation from β-supergravity
Journal of High Energy Physics, 2019 Yang-Baxter deformations of superstring σ-models have recently inspired a supergravity solution generating technique. Using the open/closed string map and a Killing bi-vector as a deformation parameter, new solutions can be built, such that the ...
Ilya Bakhmatov, Edvard T. Musaev
doaj +3 more sources
On sgoldstino-less supergravity models of inflation [PDF]
, 2014 We 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 by large ...
Dall'Agata, Gianguido, Zwirner, Fabio
core +4 more sources
On the Topology of the Inflaton Field in Minimal Supergravity Models [PDF]
, 2013 We 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+R^2 supergravity. For definiteness we
Ferrara, Sergio +2 more
core +5 more sources
Impacts of supersymmetric higher derivative terms on inflation models in supergravity [PDF]
, 2015 We show the effects of supersymmetric higher derivative terms on inflation models in supergravity. The results show that such terms generically modify the effective kinetic coefficient of the inflaton during inflation if the cut off scale of the higher ...
Shuntaro Aoki +3 more
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