T-duality and α′-corrections

Abstract: We construct an O(d, d) invariant universal formulation of the first-order α′-corrections of the string effective actions involving the dilaton, metric and two-form fields. Two free parameters interpolate between four-derivative terms that are even and odd with respect to a Z2-parity trans...

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Autores principales: Marqués, D., Nuñez, C.A.
Formato: JOUR
Materias:
Bosonic Strings
String Duality
Superstrings and Heterotic Strings
Acceso en línea:http://hdl.handle.net/20.500.12110/paper_11266708_v2015_n10_p_Marques
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Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id todo:paper_11266708_v2015_n10_p_Marques
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spelling todo:paper_11266708_v2015_n10_p_Marques2023-10-03T16:07:16Z T-duality and α′-corrections Marqués, D. Nuñez, C.A. Bosonic Strings String Duality Superstrings and Heterotic Strings Abstract: We construct an O(d, d) invariant universal formulation of the first-order α′-corrections of the string effective actions involving the dilaton, metric and two-form fields. Two free parameters interpolate between four-derivative terms that are even and odd with respect to a Z2-parity transformation that changes the sign of the two-form field. The Z2-symmetric model reproduces the closed bosonic string, and the heterotic string effective action is obtained through a Z2-parity-breaking choice of parameters. The theory is an extension of the generalized frame formulation of Double Field Theory, in which the gauge transformations are deformed by a first-order generalized Green-Schwarz transformation. This deformation defines a duality covariant gauge principle that requires and fixes the four-derivative terms. We discuss the O(d, d) structure of the theory and the (non-)covariance of the required field redefinitions. © 2015, The Author(s). Fil:Marqués, D. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_11266708_v2015_n10_p_Marques
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic Bosonic Strings
String Duality
Superstrings and Heterotic Strings
spellingShingle Bosonic Strings
String Duality
Superstrings and Heterotic Strings
Marqués, D.
Nuñez, C.A.
T-duality and α′-corrections
topic_facet Bosonic Strings
String Duality
Superstrings and Heterotic Strings
description Abstract: We construct an O(d, d) invariant universal formulation of the first-order α′-corrections of the string effective actions involving the dilaton, metric and two-form fields. Two free parameters interpolate between four-derivative terms that are even and odd with respect to a Z2-parity transformation that changes the sign of the two-form field. The Z2-symmetric model reproduces the closed bosonic string, and the heterotic string effective action is obtained through a Z2-parity-breaking choice of parameters. The theory is an extension of the generalized frame formulation of Double Field Theory, in which the gauge transformations are deformed by a first-order generalized Green-Schwarz transformation. This deformation defines a duality covariant gauge principle that requires and fixes the four-derivative terms. We discuss the O(d, d) structure of the theory and the (non-)covariance of the required field redefinitions. © 2015, The Author(s).
format JOUR
author Marqués, D.
Nuñez, C.A.
author_facet Marqués, D.
Nuñez, C.A.
author_sort Marqués, D.
title T-duality and α′-corrections
title_short T-duality and α′-corrections
title_full T-duality and α′-corrections
title_fullStr T-duality and α′-corrections
title_full_unstemmed T-duality and α′-corrections
title_sort t-duality and α′-corrections
url http://hdl.handle.net/20.500.12110/paper_11266708_v2015_n10_p_Marques
work_keys_str_mv AT marquesd tdualityandacorrections
AT nunezca tdualityandacorrections
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