Double-copy towards supergravity inflation with $α$-attractor models [PDF]
Journal of High Energy Physics, 2022 Key to the simplicity of supergravity α -attractor models of inflation are Volkov-Akulov fermions, often in the form of nilpotent superfields. Here we explore the possibility of using the double-copy to construct theories of Dirac-Born-Infeld-Volkov ...
John Joseph M. Carrasco +2 more
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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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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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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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One-loop four-graviton amplitudes in
, 2013 We evaluate with great details one-loop four-graviton field theory amplitudes in pure N=4 D=4 supergravity. The expressions are obtained by taking the field theory limit of (4,0) and (2,2) string theory models. For each model we extract the contributions
Piotr Tourkine, Pierre Vanhove
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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
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Sparticle and Higgs-boson production and detection at CERN LEP II in two supergravity models [PDF]
Physical Review D, Particles and fields, 1993 We study the most promising signals for supersymmetry at CERN LEP II in the context of two well-motivated supergravity models: (i) the minimal SU(5) supergravity model including the stringent constraints from proton stability and a not too young universe
Jorge L. Lopez +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
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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
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