Confining potential of Y-string on the lattice at finite T

Bakry, Ahmed S.; Chen, Xurong; Zhang, Pengming

doi:10.1051/epjconf/201612605001

Cited by 9 publications

(17 citation statements)

References 36 publications

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“…[2]). We find that the string tension of the diquark-quark to be the same as the mesonic string [3]. These results are compatible with the recent findings obtained employing the three Polyakov loop analysis at T=0 [4] (This instance elaborate on the close analogy between the analysis at end of QCD plateau [2,3] and that at T=0) and that using the Wilson loop overlap formalism [5].…”

Section: Numerical Lattice Resultssupporting

confidence: 91%

“…The off-plane and in-plane width of the Q(QQ) system exhibit cylindrical symmetry; even so, the string profile is apparently not identical to the QQ system. The coincidence with the mesonic string does not manifest neither at small nor intermediate separation regions indicating that the string is energetic enough to induce splitting towards a baryonic-like structure [2,3]. This is consistent with a significant change in the numerical values of the Polyakov correlators of (QQ)Q system for R < 1 fm with the increase of the temperature as depicted in Fig.…”

Section: Numerical Lattice Resultssupporting

confidence: 78%

“…It would be interesting to reiterate these calculations [1,2,3] with the employment of finer lattices at lower or higher temperatures or by considering dynamical quarks. One would question also the persistence of meson-baryon symmetries in the presence of strong magnetic fields.…”

Section: Conclusion and Prospectmentioning

confidence: 99%

See 2 more Smart Citations

Mesonic string of diquark-quark configuration at finite temperature

Bakry¹,

Chen²,

Deliyergiyev³

et al. 2018

Proceedings of XVII International Conference on Hadron Spectroscopy and Structure — PoS(Hadron2017)

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We investigate the distance and temperatures scale for which the string in baryonic quark configuration approaches the limiting behavior of mesonic strings in pure Yang-Mills SU(3) lattice gauge theory. We calculate and compare the numerical values of the Polyakov loop correlators and the width profile of both diquark-quark (QQ)Q and mesonic QQ strings. We find the diquarkquark configuration to exhibit an identical behavior to the mesonic string for the potential and energy-density width profile for temperature near the end of QCD plateau. In the vicinity of the deconfinement point; however, the symmetry in the energy-width profile with the meson does not manifest at both short and intermediate distance scales. Moreover, we observe significantly different numerical values for Polyakov loop correlators corresponding to each system. The splitting of the two identical system suggest that, in the high temperature region of the confined phase of QCD, the subsisted baryonic decouplet states overlap with the excited mesonic spectrum yielding the diquark-quark symmetry with the meson inexact in a small enough neighborhood of the critical point T c .

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Section: Numerical Lattice Resultssupporting

confidence: 91%

Section: Numerical Lattice Resultssupporting

confidence: 78%

See 1 more Smart Citation

Mesonic string of diquark-quark configuration at finite temperature

Bakry¹,

Chen²,

Deliyergiyev³

et al. 2018

Proceedings of XVII International Conference on Hadron Spectroscopy and Structure — PoS(Hadron2017)

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show abstract

“…The region extends behind distances at which the leading-order string model predictions is valid [1] at zero temperature. In the baryon [14,15], we found a similar behavior [16] for the long Y-string among quarks.…”

Section: Introductionsupporting

confidence: 65%

Stiff self-interacting strings at high temperature QCD

et al. 2018

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We investigate the implications of Nambu-Goto (NG), Lüscher Weisz (LW) and Polyakov-Kleinert (PK) effective string actions for the Casimir energy and the width of the quantum delocalization of the string in 4-dim pure SU(3) Yang-Mills lattice gauge theory. At a temperature closer to the critical point T/Tc=0.9, we found that the next to leading-order (NLO) contributions from the expansion of the NG string in addition to the boundary terms in LW action to decrease the deviations from the lattice data in the intermediate distance scales for both the quark-antiquark QQ̅ potential and broadening of the color tube compared to the free string approximation. We conjecture possible stiffness of the QCD string through studying the effects of extrinsic curvature term in PK action and find a good fitting behavior for the lattice Monte-Carlo data at both long and intermediate quark separations regions.

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“…The descripancies casts over source separation distances at which the leading-order string model predictions are valid [3] at zero temperature. In the baryon [56][57][58], taking into account the length of the Y-string between any two quarks, we found a similar behavior [59].…”

Section: Introductionsupporting

confidence: 53%

On QCD strings beyond non-interacting model

Bakry,

Deliyergiyev,

Galal

et al. 2020

Preprint

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We investigate the implications of Nambu-Goto (NG), Lscher-Weisz (LW) and Polyakov-Kleinert (PK) string actions for the Casimir energy of the QCD flux-tube at one and two loop order at finite temperature. We perform our numerical study on the 4-dim pure SU(3) Yang-Mills lattice gauge theory at finite temperature and coupling β = 6.0. The static quark-antiquark potential is calculated using link-integrated Polyakov loop correlators. At a high temperature-close to the critical point-We find that the rigidity and self-interactions effects of the QCD string to become detectable. The remarkable feature of this model is that it retrieves a correct dependency of the renormalized string tension on the temperature. Good fit to static potential data at source separations R ≥ 0.5 fm is obtained when including additional two-boundary terms of (LW) action. On the other-hand, at a lower temperature-near the QCD plateau-We detect signatures of two boundary terms of the Lscher-Weisz (LW) string action. The (LW) string with boundary action is yielding a static potential which is in a good agreement with the lattice Monte-Carlo data, however, for color source separation as short as R = 0.3 fm.

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Confining potential of Y-string on the lattice at finite T

Cited by 9 publications

References 36 publications

Mesonic string of diquark-quark configuration at finite temperature

Mesonic string of diquark-quark configuration at finite temperature

Stiff self-interacting strings at high temperature QCD

On QCD strings beyond non-interacting model

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