Results 11 to 20 of about 6,873,885 (298)

T-duality invariant approaches to string theory [PDF]

open access: yes, 2010
PhDThis thesis investigates the quantum properties of T-duality invariant formalisms of String Theory. We introduce and review duality invariant formalisms of String Theory including the Doubled Formalism.
Thompson, Daniel C.
core   +4 more sources

Fine-tuned vs. natural supersymmetry: what does the string landscape predict?

open access: yesJournal 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
doaj   +1 more source

Radiative natural supersymmetry emergent from the string landscape

open access: yesJournal 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
doaj   +1 more source

String-motivated model [PDF]

open access: yesPhysical Review D, 1995
13 pages, published version, now in Latex, minor revisions, references ...
openaire   +3 more sources

Counting string theory standard models

open access: yesPhysics Letters B, 2019
We derive an approximate analytic relation between the number of consistent heterotic Calabi-Yau compactifications of string theory with the exact charged matter content of the standard model of particle physics and the topological data of the internal ...
Andrei Constantin   +2 more
doaj   +1 more source

Modified models of a free boson string and their solutions

open access: yesҚарағанды 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
doaj   +1 more source

Supergravity solution-generating techniques and canonical transformations of σ-models from O(D, D)

open access: yesJournal 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
doaj   +1 more source

On a ‘Replicating Character String’ Model [PDF]

open access: yesJournal of Applied Probability, 2014
In Chaudhuri and Dasgupta's 2006 paper a certain stochastic model for ‘replicating character strings’ (such as in DNA sequences) was studied. In their model, a random ‘input’ sequence was subjected to random mutations, insertions, and deletions, resulting in a random ‘output’ sequence.
openaire   +4 more sources

BFKL pomeron in string models [PDF]

open access: yesNuclear Physics B, 2006
48 pages, 2 ...
Danilov, G. S., Lipatov, L. N.
openaire   +2 more sources

Aspects of finite temperature corrections in string theory [PDF]

open access: yes, 2011
PhDIn this thesis some aspects of temperature corrections in string theory are analyzed: in particular, we study the thermal contributions to the 4 dimensional effective potential arising from string theory compactifications.
Calo, Vincenzo
core   +4 more sources

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