A new twist on heterotic string compactifications

A rich pattern of gauge symmetries is found in the moduli space of heterotic string toroidal compactifications, at fixed points of the T-duality transformations. We analyze this pattern for generic tori, and scrutinize in full detail compactifications on a circle, where we find all the maximal gauge...

Descripción completa

Guardado en:

Detalles Bibliográficos
Autores principales:	Fraiman, B., Graña, M., Nuñez, C.A.
Formato:	JOUR
Materias:	Gauge Symmetry Global Symmetries String Duality Superstrings and Heterotic Strings
Acceso en línea:	http://hdl.handle.net/20.500.12110/paper_11266708_v2018_n9_p_Fraiman
Aporte de:	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires

id	todo:paper_11266708_v2018_n9_p_Fraiman
record_format	dspace
spelling	todo:paper_11266708_v2018_n9_p_Fraiman2023-10-03T16:07:45Z A new twist on heterotic string compactifications Fraiman, B. Graña, M. Nuñez, C.A. Gauge Symmetry Global Symmetries String Duality Superstrings and Heterotic Strings A rich pattern of gauge symmetries is found in the moduli space of heterotic string toroidal compactifications, at fixed points of the T-duality transformations. We analyze this pattern for generic tori, and scrutinize in full detail compactifications on a circle, where we find all the maximal gauge symmetry groups and the points where they arise. We present figures of two-dimensional slices of the 17-dimensional moduli space of Wilson lines and circle radii, showing the rich pattern of points and curves of symmetry enhancement. We then study the target space realization of the duality symmetry. Although the global continuous duality symmetries of dimensionally reduced heterotic supergravity are completely broken by the structure constants of the maximally enhanced gauge groups, the low energy effective action can be written in a manifestly duality covariant form using heterotic double field theory. As a byproduct, we show that a unique deformation of the generalized diffeomorphisms accounts for both SO(32) and E8 × E8 heterotic effective field theories, which can thus be considered two different backgrounds of the same double field theory even before compactification. Finally we discuss the spontaneous gauge symmetry breaking and Higgs mechanism that occurs when slightly perturbing the background fields, both from the string and the field theory perspectives. © 2018, The Author(s). JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_11266708_v2018_n9_p_Fraiman
institution	Universidad de Buenos Aires
institution_str	I-28
repository_str	R-134
collection	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic	Gauge Symmetry Global Symmetries String Duality Superstrings and Heterotic Strings
spellingShingle	Gauge Symmetry Global Symmetries String Duality Superstrings and Heterotic Strings Fraiman, B. Graña, M. Nuñez, C.A. A new twist on heterotic string compactifications
topic_facet	Gauge Symmetry Global Symmetries String Duality Superstrings and Heterotic Strings
description	A rich pattern of gauge symmetries is found in the moduli space of heterotic string toroidal compactifications, at fixed points of the T-duality transformations. We analyze this pattern for generic tori, and scrutinize in full detail compactifications on a circle, where we find all the maximal gauge symmetry groups and the points where they arise. We present figures of two-dimensional slices of the 17-dimensional moduli space of Wilson lines and circle radii, showing the rich pattern of points and curves of symmetry enhancement. We then study the target space realization of the duality symmetry. Although the global continuous duality symmetries of dimensionally reduced heterotic supergravity are completely broken by the structure constants of the maximally enhanced gauge groups, the low energy effective action can be written in a manifestly duality covariant form using heterotic double field theory. As a byproduct, we show that a unique deformation of the generalized diffeomorphisms accounts for both SO(32) and E8 × E8 heterotic effective field theories, which can thus be considered two different backgrounds of the same double field theory even before compactification. Finally we discuss the spontaneous gauge symmetry breaking and Higgs mechanism that occurs when slightly perturbing the background fields, both from the string and the field theory perspectives. © 2018, The Author(s).
format	JOUR
author	Fraiman, B. Graña, M. Nuñez, C.A.
author_facet	Fraiman, B. Graña, M. Nuñez, C.A.
author_sort	Fraiman, B.
title	A new twist on heterotic string compactifications
title_short	A new twist on heterotic string compactifications
title_full	A new twist on heterotic string compactifications
title_fullStr	A new twist on heterotic string compactifications
title_full_unstemmed	A new twist on heterotic string compactifications
title_sort	new twist on heterotic string compactifications
url	http://hdl.handle.net/20.500.12110/paper_11266708_v2018_n9_p_Fraiman
work_keys_str_mv	AT fraimanb anewtwistonheteroticstringcompactifications AT granam anewtwistonheteroticstringcompactifications AT nunezca anewtwistonheteroticstringcompactifications AT fraimanb newtwistonheteroticstringcompactifications AT granam newtwistonheteroticstringcompactifications AT nunezca newtwistonheteroticstringcompactifications
_version_	1807323007946850304

A new twist on heterotic string compactifications

Ejemplares similares