Zero Point Energy of Renormalized Wilson Loops

Details Zero Point Energy of Renormalized Wilson Loops Zero Point Energy of Renormalized Wilson Loops

2009-07-27

arxiv.org/abs/0907.4609v3

Phys.Rev.D80:074504,2009

Physics

High Energy Physics

High Energy Physics - Phenomenology

14 pages, ReVTeX. Paper shortened, results unchanged

Scientific paper

10.1103/PhysRevD.80.074504

The quark antiquark potential, and its associated zero point energy, can be extracted from lattice measurements of the Wilson loop. We discuss a unique prescription to renormalize the Wilson loop, for which the perturbative contribution to the zero point energy vanishes identically. A zero point energy can arise nonperturbatively, which we illustrate by considering effective string models. The nonperturbative contribution to the zero point energy vanishes in the Nambu model, but is nonzero when terms for extrinsic curvature are included. At one loop order, the nonperturbative contribution to the zero point energy is negative, regardless of the sign of the extrinsic curvature term.

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