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String-Generated Gravity Models [PDF]
Physical Review Letters, 1985 Expansion of supersymmetric string theory suggests that the leading quadratic curvature correction to the Einstein action is the Gauss-Bonnet invariant. We show that this model has both flat and anti-de Sitter space as solutions, but that the cosmological branch is unstable, because the graviton becomes a ghost there: The theory solves its own ...
Boulware, David G., Deser, S.
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CHARMED BARYON IN A STRING MODEL [PDF]
International Journal of Modern Physics E, 2010 Charmed baryon spectroscopy has been studied under a string model. In this model, charmed baryons are composed of a diquark and a charm quark which are connected by a constant tension. In this diquark picture, the quantum numbers JP of confirmed baryons have been well assigned.
Wang, Q. W., Zhang, P. M.
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Sterile neutrinos in string derived models
European Physical Journal C: Particles and Fields, 2018 The MiniBooNE collaboration recently reported further evidence for the existence of sterile neutrinos, implying substantial mixing with the left-handed active neutrinos and at a comparable mass scale.
Alon E. Faraggi
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A model for string-breaking in QCD [PDF]
Journal of High Energy Physics, 2003 7 pages, minor improvements of the text and of the reference ...
ANTONOV D. +2 more
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Non-singular pre-big bang scenarios from all-order α′ corrections
Journal of High Energy Physics, 2023 We reformulate in Hamiltonian language the recent proposal by Hohm and Zwiebach of an action yielding the most general O(d, d)-symmetric string cosmology equations, at tree-level in the string-loop expansion, but to all orders in the α′ expansion.
M. Gasperini, G. Veneziano
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Modulated reheating and large non-gaussianity in string cosmology [PDF]
, 2012 A generic feature of the known string inflationary models is that the same physics that makes the inflaton lighter than the Hubble scale during inflation often also makes other scalars this light.
CICOLI, MICHELE +9 more
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Bit-string models for parasex [PDF]
Physica A: Statistical Mechanics and its Applications, 2003 We present different bit-string models of haploid asexual populations in which individuals may exchange part of their genome with other individuals (parasex) according to a given probability. We study the advantages of this parasex concerning population sizes, genetic fitness and diversity.
Moss de Oliveira, S. +2 more
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Causal models in string diagrams
CoRR, 2023 105 pages, lots of diagrams; comments very ...
Robin Lorenz, Sean Tull
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Generalised U-dual solutions via ISO(7) gauged supergravity
Journal of High Energy Physics, 2022 We study a solution generating technique in supergravity which can be viewed as a generalised version of U-duality, taking solutions of type IIA supergravity on a 6-sphere with RR flux to new solutions of 11-dimensional supergravity.
Chris D. A. Blair, Sofia Zhidkova
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Non-abelian fermionic T-duality in supergravity
Journal of High Energy Physics, 2021 Field transformation rules of the standard fermionic T-duality require fermionic isometries to anticommute, which leads to complexification of the Killing spinors and results in complex valued dual backgrounds.
Lev Astrakhantsev +2 more
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