publication . Article . Preprint . 2009

Zero point energy of renormalized Wilson loops

Robert D. Pisarski; Yoshimasa Hidaka;
Open Access
  • Published: 12 Oct 2009 Journal: Physical Review D, volume 80 (issn: 1550-7998, eissn: 1550-2368, Copyright policy)
  • Publisher: American Physical Society (APS)
Abstract
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 extrin...
Subjects
arXiv: High Energy Physics::LatticeHigh Energy Physics::Phenomenology
free text keywords: Nuclear and High Energy Physics, High Energy Physics - Phenomenology, High Energy Physics - Lattice, Curvature, Physics, Lattice field theory, Zero-point energy, Quantum electrodynamics, Perturbation theory (quantum mechanics), Wilson loop, Lattice (order), Renormalization

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