Walking near a conformal fixed point

de Forcrand, P.; Pepe, M.; Wiese, Uwe-Jens (2013). Walking near a conformal fixed point. PoS - proceedings of science, LATTIC(041), pp. 1-7. Scuola Internazionale Superiore di Studi Avanzati SISSA

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We investigate the 2-d O(3) model with a q-term as a toy model for slowly walking 4-d non-Abelian 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.

Item Type:

Conference or Workshop Item (Paper)

Division/Institute:

08 Faculty of Science > Institute of Theoretical Physics
10 Strategic Research Centers > Albert Einstein Center for Fundamental Physics (AEC)

UniBE Contributor:

Wiese, Uwe-Jens

Subjects:

500 Science > 530 Physics

ISSN:

1824-8039

Publisher:

Scuola Internazionale Superiore di Studi Avanzati SISSA

Language:

English

Submitter:

Esther Fiechter

Date Deposited:

14 Aug 2014 10:16

Last Modified:

06 Dec 2014 20:39

BORIS DOI:

10.7892/boris.46325

URI:

https://boris.unibe.ch/id/eprint/46325

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