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...
Guardado en:
| Publicado: |
2018
|
|---|---|
| Materias: | |
| Acceso en línea: | https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_11266708_v2018_n9_p_Fraiman http://hdl.handle.net/20.500.12110/paper_11266708_v2018_n9_p_Fraiman |
| Aporte de: |
| id |
paper:paper_11266708_v2018_n9_p_Fraiman |
|---|---|
| record_format |
dspace |
| spelling |
paper:paper_11266708_v2018_n9_p_Fraiman2023-06-08T16:09:00Z A new twist on heterotic string compactifications 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). 2018 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_11266708_v2018_n9_p_Fraiman 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 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). |
| 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 |
| publishDate |
2018 |
| url |
https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_11266708_v2018_n9_p_Fraiman http://hdl.handle.net/20.500.12110/paper_11266708_v2018_n9_p_Fraiman |
| _version_ |
1768543385676677120 |