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Abstract:

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).

Registro:

Documento: Artículo
Título:A new twist on heterotic string compactifications
Autor:Fraiman, B.; Graña, M.; Nuñez, C.A.
Filiación:Instituto de Astronom ıa y Física del Espacio (IAFE-CONICET-UBA), Ciudad Universitaria, Pabellón IAFE, Buenos Aires, 1428, Argentina
Departamento de Física, FCEyN, Universidad de Buenos Aires (UBA), Ciudad Universitaria, Buenos Aires, 1428, Argentina
Institut de Physique Théorique, CEA/ Saclay, Gif-sur-Yvette Cedex, 91191, France
Palabras clave:Gauge Symmetry; Global Symmetries; String Duality; Superstrings and Heterotic Strings
Año:2018
Volumen:2018
Número:9
DOI: http://dx.doi.org/10.1007/JHEP09(2018)078
Título revista:Journal of High Energy Physics
Título revista abreviado:J. High Energy Phys.
ISSN:11266708
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_11266708_v2018_n9_p_Fraiman

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Citas:

---------- APA ----------
Fraiman, B., Graña, M. & Nuñez, C.A. (2018) . A new twist on heterotic string compactifications. Journal of High Energy Physics, 2018(9).
http://dx.doi.org/10.1007/JHEP09(2018)078
---------- CHICAGO ----------
Fraiman, B., Graña, M., Nuñez, C.A. "A new twist on heterotic string compactifications" . Journal of High Energy Physics 2018, no. 9 (2018).
http://dx.doi.org/10.1007/JHEP09(2018)078
---------- MLA ----------
Fraiman, B., Graña, M., Nuñez, C.A. "A new twist on heterotic string compactifications" . Journal of High Energy Physics, vol. 2018, no. 9, 2018.
http://dx.doi.org/10.1007/JHEP09(2018)078
---------- VANCOUVER ----------
Fraiman, B., Graña, M., Nuñez, C.A. A new twist on heterotic string compactifications. J. High Energy Phys. 2018;2018(9).
http://dx.doi.org/10.1007/JHEP09(2018)078