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Families of N=2 Strings

In a given 4d spacetime bakcground, one can often construct not one but a family of distinct N=2 string theories. This is due to the multiple ways N=2 superconformal algebra can be embedded in a given worldsheet theory. We formulate the principle of obtaining different physical theories by gauging d...

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Detalles Bibliográficos
Autores principales: Cheung, Yeuk-Kwan E., Oz, Yaron, Yin, Zheng
Lenguaje:eng
Publicado: 2002
Materias:
Acceso en línea:https://dx.doi.org/10.1088/1126-6708/2003/11/026
http://cds.cern.ch/record/591844
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author Cheung, Yeuk-Kwan E.
Oz, Yaron
Yin, Zheng
author_facet Cheung, Yeuk-Kwan E.
Oz, Yaron
Yin, Zheng
author_sort Cheung, Yeuk-Kwan E.
collection CERN
description In a given 4d spacetime bakcground, one can often construct not one but a family of distinct N=2 string theories. This is due to the multiple ways N=2 superconformal algebra can be embedded in a given worldsheet theory. We formulate the principle of obtaining different physical theories by gauging different embeddings of the same symmetry algebra in the same ``pre-theory.'' We then apply it to N=2 strings and formulate the recipe for finding the associated parameter spaces of gauging. Flat and curved target spaces of both (4,0) and (2,2) signatures are considered. We broadly divide the gauging choices into two classes, denoted by alpha and beta, and show them to be related by T-duality. The distinction between them is formulated topologically and hinges on some unique properties of 4d manifolds. We determine what their parameter spaces of gauging are under certain simplicity ansatz for generic flat spaces (R^4 and its toroidal compactifications) as well as some curved spaces. We briefly discuss the spectra of D-branes for both alpha and beta families.
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institution Organización Europea para la Investigación Nuclear
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spelling cern-5918442023-03-14T17:08:26Zdoi:10.1088/1126-6708/2003/11/026http://cds.cern.ch/record/591844engCheung, Yeuk-Kwan E.Oz, YaronYin, ZhengFamilies of N=2 StringsParticle Physics - TheoryIn a given 4d spacetime bakcground, one can often construct not one but a family of distinct N=2 string theories. This is due to the multiple ways N=2 superconformal algebra can be embedded in a given worldsheet theory. We formulate the principle of obtaining different physical theories by gauging different embeddings of the same symmetry algebra in the same ``pre-theory.'' We then apply it to N=2 strings and formulate the recipe for finding the associated parameter spaces of gauging. Flat and curved target spaces of both (4,0) and (2,2) signatures are considered. We broadly divide the gauging choices into two classes, denoted by alpha and beta, and show them to be related by T-duality. The distinction between them is formulated topologically and hinges on some unique properties of 4d manifolds. We determine what their parameter spaces of gauging are under certain simplicity ansatz for generic flat spaces (R^4 and its toroidal compactifications) as well as some curved spaces. We briefly discuss the spectra of D-branes for both alpha and beta families.In a given 4d spacetime bakcground, one can often construct not one but a family of distinct N=2 string theories. This is due to the multiple ways N=2 superconformal algebra can be embedded in a given worldsheet theory. We formulate the principle of obtaining different physical theories by gauging different embeddings of the same symmetry algebra in the same ``pre-theory.'' We then apply it to N=2 strings and formulate the recipe for finding the associated parameter spaces of gauging. Flat and curved target spaces of both (4,0) and (2,2) signatures are considered. We broadly divide the gauging choices into two classes, denoted by alpha and beta, and show them to be related by T-duality. The distinction between them is formulated topologically and hinges on some unique properties of 4d manifolds. We determine what their parameter spaces of gauging are under certain simplicity ansatz for generic flat spaces (R^4 and its toroidal compactifications) as well as some curved spaces. We briefly discuss the spectra of D-branes for both alpha and beta families.hep-th/0211147CALT-68-2410CERN-TH-2002-317TAUP-2717-02CALT68-2410CERN-TH-2002-317TAUP-2717oai:cds.cern.ch:5918442002-11-15
spellingShingle Particle Physics - Theory
Cheung, Yeuk-Kwan E.
Oz, Yaron
Yin, Zheng
Families of N=2 Strings
title Families of N=2 Strings
title_full Families of N=2 Strings
title_fullStr Families of N=2 Strings
title_full_unstemmed Families of N=2 Strings
title_short Families of N=2 Strings
title_sort families of n=2 strings
topic Particle Physics - Theory
url https://dx.doi.org/10.1088/1126-6708/2003/11/026
http://cds.cern.ch/record/591844
work_keys_str_mv AT cheungyeukkwane familiesofn2strings
AT ozyaron familiesofn2strings
AT yinzheng familiesofn2strings