Spectrum of the open QCD ﬂux tube in $d = 2 + 1$ and its effective string description - INSPIRE

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Spectrum of the open QCD ﬂux tube in $d = 2 + 1$ and its effective string description

Bastian B. Brandt
(
- Regensburg U.
)

Aug 22, 2013

5 pages

Part of Proceedings, 2013 European Physical Society Conference on High Energy Physics (EPS-HEP 2013) : Stockholm, Sweden, July 18-24, 2013, 540

Published in:

PoS EPS-HEP2013 (2013) 540

Contribution to:

- EPS-HEP 2013
, 540

Published: 2014

e-Print:

1308.4993 [hep-lat]

DOI:

10.22323/1.180.0540

View in:

ADS Abstract Service

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Abstract: (arXiv)

Simulations in lattice gauge theory suggest that the formation of a flux tube between quark and antiquark leads to quark confinement. It is conjectured that the infrared behaviour of the flux tube is governed by an effective string theory and simulations show good agreement between lattice data and its predictions. To next-to leading order (

R^{-3}

) in the inverse

q\bar{q}

separation

R

the effective string theory is equivalent to Nambu-Goto string theory. For the open flux tube in three dimensions corrections appear at order

R^{-4}

. We compare these predictions to high-accuracy measurements of the groundstate energy of the flux tube in 3d SU(2) and SU(3) gauge theory and extract the coefficient of the leading order boundary term in the effective action.

Note:

5 pages, 2 figures, talk presented at the European Physical Society Conference on High Energy Physics (EPS-HEP) 2013 in Stockholm

flux tube: energy
gauge field theory: SU(3)
quark: confinement
dimension: 3
higher-order: 1
string model
lattice field theory
boundary condition
effective action
quark antiquark: force

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