☆ 4.8 Article

From Decay to Complete Breaking: Pulling the Strings in SU(2) Yang-Mills Theory

PHYSICAL REVIEW LETTERS (2009)

Journal

PHYSICAL REVIEW LETTERS

Volume 102, Issue 19, Pages -

Publisher

AMER PHYSICAL SOC

DOI: 10.1103/PhysRevLett.102.191601

Keywords

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Categories

Physics, Multidisciplinary

Funding

Schweizerischer Nationalfonds (SNF)

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Abstract

We study {2Q+1} strings connecting two static charges Q in (2+1)D SU(2) Yang-Mills theory. While the fundamental {2} string between two charges Q=1/2 is unbreakable, the adjoint {3} string connecting two charges Q=1 can break. When a {4} string is stretched beyond a critical length, it decays into a {2} string by gluon pair creation. When a {5} string is stretched, it first decays into a {3} string, which eventually breaks completely. The energy of the screened charges at the ends of a string is well described by a phenomenological constituent gluon model.

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