Results 11 to 20 of about 105,358 (314)
String bit models for superstring [PDF]
Physical Review D, 1995 We extend the model of string as a polymer of string bits to the case of superstring. We mainly concentrate on type II-B superstring, with some discussion of the obstacles presented by not II-B superstring, together with possible strategies for surmounting them. As with previous work on bosonic string we work within the light-cone gauge.
Bergman, Oren, Thorn, Charles B.
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Very effective string model? [PDF]
Physical Review D, 1998 Additional evidence is presented for a recently proposed effective string model, conjectured to hold throughout the parameter space of the basic 5 dimensional, triply charged black holes, which includes the effects of brane excitations, as well as momentum modes.
Kastor, David, Traschen, Jennie
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AIP Conference Proceedings, 2010 In this talk I review some recent progress in heterotic and F theory model building. I then consider work in progress attempting to find the F theory dual to a class of heterotic orbifold models which come quite close to the MSSM.
Stuart Raby +3 more
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Fine-tuned vs. natural supersymmetry: what does the string landscape predict?
Journal of High Energy Physics, 2022 A vast array of (metastable) vacuum solutions arise from string compactifications, each leading to different 4-d laws of physics. The space of these solutions, known as the string landscape, allows for an environmental solution to the cosmological ...
Howard Baer +3 more
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String Sigma Models on Curved Supermanifolds
Universe, 2018 We use the techniques of integral forms to analyze the easiest example of two-dimensional sigma models on a supermanifold. We write the action as an integral of a top integral form over a D = 2 supermanifold, and we show how to interpolate between ...
Roberto Catenacci +1 more
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Physical Review D, 1995 13 pages, published version, now in Latex, minor revisions, references ...
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Radiative natural supersymmetry emergent from the string landscape
Journal of High Energy Physics, 2022 In string theory with flux compactifications, anthropic selection for structure formation from a discretuum of vacuum energy values provides at present our only understanding of the tiny yet positive value of the cosmological constant.
Howard Baer +3 more
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Modified models of a free boson string and their solutions
Қарағанды университетінің хабаршысы. Физика сериясы, 2019 In this paper we consider the modified models of a free boson string and examine their dynamics. Modified models of the boson string are investigated from the point of view of the second order formalism (the Polyakov action).
З.К. Шанина, О.В. Разина
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Supergravity solution-generating techniques and canonical transformations of σ-models from O(D, D)
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 ...
Riccardo Borsato, Sibylle Driezen
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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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