Effective Actions near Singularities

We study the heterotic string compactified on K3 x T^2 near the line T=U, where the effective action becomes singular due to an SU(2) gauge symmetry enhancement. By `integrating in' the light W^\pm vector multiplets we derive a quantum corrected effective action which is manifestly SU(2) invari...

Descripción completa

Detalles Bibliográficos
Autores principales: Louis, Jan, Mohaupt, Thomas, Zagermann, Marco
Lenguaje:eng
Publicado: 2003
Materias:
Particle Physics - Theory
Acceso en línea:https://dx.doi.org/10.1088/1126-6708/2003/02/053
http://cds.cern.ch/record/601534
_version_ 1780900018945785856
author Louis, Jan
Mohaupt, Thomas
Zagermann, Marco
author_facet Louis, Jan
Mohaupt, Thomas
Zagermann, Marco
author_sort Louis, Jan
collection CERN
description We study the heterotic string compactified on K3 x T^2 near the line T=U, where the effective action becomes singular due to an SU(2) gauge symmetry enhancement. By `integrating in' the light W^\pm vector multiplets we derive a quantum corrected effective action which is manifestly SU(2) invariant and non-singular. This effective action is found to be consistent with a residual SL(2,Z) quantum symmetry on the line T=U. In an appropriate decompactification limit, we recover the known SU(2) invariant action in five dimensions.
id cern-601534
institution Organización Europea para la Investigación Nuclear
language eng
publishDate 2003
record_format invenio
spelling cern-6015342023-03-14T18:42:37Zdoi:10.1088/1126-6708/2003/02/053http://cds.cern.ch/record/601534engLouis, JanMohaupt, ThomasZagermann, MarcoEffective Actions near SingularitiesParticle Physics - TheoryWe study the heterotic string compactified on K3 x T^2 near the line T=U, where the effective action becomes singular due to an SU(2) gauge symmetry enhancement. By `integrating in' the light W^\pm vector multiplets we derive a quantum corrected effective action which is manifestly SU(2) invariant and non-singular. This effective action is found to be consistent with a residual SL(2,Z) quantum symmetry on the line T=U. In an appropriate decompactification limit, we recover the known SU(2) invariant action in five dimensions.We study the heterotic string compactified on K3 x T^2 near the line T=U, where the effective action becomes singular due to an SU(2) gauge symmetry enhancement. By `integrating in' the light W^\pm vector multiplets we derive a quantum corrected effective action which is manifestly SU(2) invariant and non-singular. This effective action is found to be consistent with a residual SL(2,Z) quantum symmetry on the line T=U. In an appropriate decompactification limit, we recover the known SU(2) invariant action in five dimensions.hep-th/0301125FSU-TPI-08-02CERN-TH-2002-377CERN-TH-2002-377oai:cds.cern.ch:6015342003-01-17
spellingShingle Particle Physics - Theory
Louis, Jan
Mohaupt, Thomas
Zagermann, Marco
Effective Actions near Singularities
title Effective Actions near Singularities
title_full Effective Actions near Singularities
title_fullStr Effective Actions near Singularities
title_full_unstemmed Effective Actions near Singularities
title_short Effective Actions near Singularities
title_sort effective actions near singularities
topic Particle Physics - Theory
url https://dx.doi.org/10.1088/1126-6708/2003/02/053
http://cds.cern.ch/record/601534
work_keys_str_mv AT louisjan effectiveactionsnearsingularities
AT mohauptthomas effectiveactionsnearsingularities
AT zagermannmarco effectiveactionsnearsingularities

Ejemplares similares