Confining strings with topological term

M. C. Diamantini, F. Quevedo, C. A. Trugenberger

Research output: Contribution to journalArticlepeer-review

Abstract

We consider several aspects of 'confining strings', recently proposed to describe the confining phase of gauge field theories. We perform the exact duality transformation that leads to the confining string action and show that it reduces to the Polyakov action in the semiclassical approximation. In 4D we introduce a 'θ-term' and compute the low-energy effective action for the confining string in a derivative expansion. We find that the coefficient of the extrinsic curvature (stiffness) is negative, confirming previous proposals. In the absence of a θ-term, the effective string action is only a cut-off theory for finite values of the coupling e, whereas for generic values of θ, the action can be renormalized and to leading order we obtain the Nambu-Goto action plus a topological 'spin' term that could stabilize the system.

Original languageEnglish (US)
Pages (from-to)115-121
Number of pages7
JournalPhysics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume396
Issue number1-4
DOIs
StatePublished - Mar 20 1997

ASJC Scopus subject areas

  • Nuclear and High Energy Physics

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