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Spectrum of the open QCD flux tube and its effective string description

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arxiv 1811.11779 v1 pith:7J5DN4NJ submitted 2018-11-28 hep-lat hep-th

Bastian B. Brandt This is my paper · ORCID
classification hep-lathep-th
keywords stringresultstheoryboundarycoefficienteffectivefluxlimit
verification ladder T0 review T1 audit T2 compute T3 formal
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abstract

I perform a high precision measurement of the static quark-antiquark potential in three-dimensional ${\rm SU}(N)$ gauge theory with $N=2$ to 6. The results are compared to the effective string theory for the QCD flux tube and I obtain continuum limit results for the string tension and the non-universal leading order boundary coefficient, including an extensive analysis of all types of systematic uncertainties. The magnitude of the boundary coefficient decreases with increasing $N$, but remains non-vanishing in the large-$N$ limit. I also test for the presence of possible contributions from rigidity or massive modes and compare the results for the string theory parameters to data for the excited states.

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Cited by 3 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score. Full citation record

  1. Confining Flux Tube in the Trace Deformed (2+1) Dimensional SU(2) Gauge Theory

    hep-lat 2026-06 unverdicted novelty 7.0 of 10

    In the reconfined phase of trace-deformed (2+1)D SU(2) gauge theory, Polyakov-loop data are accurately fit by the Polchinski-Yang rigid string while Nambu-Goto fails, with modified flux-tube width and a shift to first...

  2. The spectrum of open confining strings in the large-Nc limit

    hep-lat 2025-06 conditional novelty 6.0 of 10

    The open flux-tube spectrum in SU(Nc) for Nc=3 to 6 shows massive axion-like states whose lightest mass, extrapolated to large Nc, is consistent with the worldsheet axion mass of the closed flux tube.

  3. Effective string description of the reconfined phase in the trace deformed $\mathrm{SU}(2)$ Yang-Mills theory in (2+1) dimensions

    hep-lat 2025-01 conditional novelty 6.0 of 10

    In the reconfined phase of trace deformed SU(2) gauge theory, the flux tube energy follows the Polchinski-Yang rigid string rather than the Nambu-Goto string.

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