Walking near a conformal fixed point

We investigate the 2-d O(3) model with a q-term as a toy model for slowly walking 4-d nonAbelian gauge theories. Using the very efficient meron-cluster algorithm, an accurate investigation of the scale dependence of the renormalized coupling is carried out for different values of the vacuum angle q....

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Detalles Bibliográficos
Autores principales: de Forcrand, P, Pepe, M, Wiese, U.J
Lenguaje:eng
Publicado: 2012
Acceso en línea:http://cds.cern.ch/record/1565564
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author de Forcrand, P
Pepe, M
Wiese, U.J
author_facet de Forcrand, P
Pepe, M
Wiese, U.J
author_sort de Forcrand, P
collection CERN
description We investigate the 2-d O(3) model with a q-term as a toy model for slowly walking 4-d nonAbelian gauge theories. Using the very efficient meron-cluster algorithm, an accurate investigation of the scale dependence of the renormalized coupling is carried out for different values of the vacuum angle q. Approaching q = p, the infrared dynamics of the 2-d O(3) model is determined by a non-trivial conformal fixed point. We provide evidence for a slowly walking behavior near the fixed point and we perform a finite-size scaling analysis of the mass gap.
id cern-1565564
institution Organización Europea para la Investigación Nuclear
language eng
publishDate 2012
record_format invenio
spelling cern-15655642019-09-30T06:29:59Zhttp://cds.cern.ch/record/1565564engde Forcrand, PPepe, MWiese, U.JWalking near a conformal fixed pointWe investigate the 2-d O(3) model with a q-term as a toy model for slowly walking 4-d nonAbelian gauge theories. Using the very efficient meron-cluster algorithm, an accurate investigation of the scale dependence of the renormalized coupling is carried out for different values of the vacuum angle q. Approaching q = p, the infrared dynamics of the 2-d O(3) model is determined by a non-trivial conformal fixed point. We provide evidence for a slowly walking behavior near the fixed point and we perform a finite-size scaling analysis of the mass gap.CERN-PH-TH-2012-292oai:cds.cern.ch:15655642012
spellingShingle de Forcrand, P
Pepe, M
Wiese, U.J
Walking near a conformal fixed point
title Walking near a conformal fixed point
title_full Walking near a conformal fixed point
title_fullStr Walking near a conformal fixed point
title_full_unstemmed Walking near a conformal fixed point
title_short Walking near a conformal fixed point
title_sort walking near a conformal fixed point
url http://cds.cern.ch/record/1565564
work_keys_str_mv AT deforcrandp walkingnearaconformalfixedpoint
AT pepem walkingnearaconformalfixedpoint
AT wieseuj walkingnearaconformalfixedpoint

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