Flux tubes in Nf = 2 + 1 QCD with external magnetic fields

Bonati, Claudio; Calì, Salvatore; D’Elia, Massimo; Mesiti, Michele; Negro, Francesco; Rucci, Andrea; Sanfilippo, Francesco

doi:10.1051/epjconf/201817512008

Cited by 5 publications

(3 citation statements)

References 22 publications

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“…Indeed, Monte Carlo simulations produce samples of vacuum configurations that, in principle, contain all the relevant information on the nonperturbative sector of QCD. A wealth of numerical analyses in QCD has firmly established that the chromoelectric field between a static quark-antiquark pair distributes in tubelike structures or "flux tubes" [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15][16][17][18][19][20]. From these tubelike structures a linear potential between static color charges naturally arises, thus representing a numerical evidence of color confinement.…”

Section: Introductionmentioning

confidence: 99%

QCD flux tubes across the deconfinement phase transition

et al. 2018

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Section: Introductionmentioning

confidence: 99%

QCD flux tubes across the deconfinement phase transition

et al. 2018

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“…Preliminary results have been presented at the 35 th International Symposium on Lattice Field Theory (Lattice 2017)[45].…”

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confidence: 99%

Effects of a strong magnetic field on the QCD flux tube

et al. 2018

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In this work we investigate the effect of an external magnetic field B on the shape of flux tubes in QCD by means of lattice simulations, performed with N f = 2 + 1 flavors of stout improved dynamical staggered quarks with physical masses. After having discussed some difficulties in the practical definition of the flux tube at B = 0, we show that these ambiguities do not affect the determination of the flux tube modifications induced by the magnetic field. Different results are obtained depending on the relative orientations of the flux tube and of the magnetic field: they confirm that the magnetic field acts as transverse confinement catalyser and longitudinal confinement inhibitor; moreover, the flux tube itself loses its axial symmetry when it is not directed along the magnetic background. * Electronic address: claudio.bonati@df.unipi.it † Electronic address: scali@uni-wuppertal.de ‡ Electronic address: massimo.delia@unipi.it § Electronic address: michele.mesiti@swansea.ac.uk ¶ Electronic address: fnegro@pi.infn.it * * Electronic address: andrea.rucci@pi.infn.it † † Electronic address: francesco.sanfilippo@roma3.infn.it

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“…Otherwise, to draw a conclusive remarks on the roughness of the approximation at extreme conditions such as small neighborhoods of T C or higher states of excited spectrum [93,164,165], a careful analysis considering smaller lattice spacings, even higher temperatures and strong magnetic fields [166][167][168][169] ought to be addressed. In this work, we inspect the symmetry between the gluon flux-tubes for the quark-antiquark (Q Q) and three quark systems at finite temperature.…”

Section: Table VIIImentioning

confidence: 99%

Strings of diquark-quark (QQ)Q baryon before phase transition

Bakry¹,

Chen²,

Deliyergiyev

et al. 2020

Preprint

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We explore the limit at which effective baryonic Y-string model of the junction approaches the mesonic stringlike behavior. We calculate and compare the numerical values of the static potential and energy-density correlators of diquark-quark (QQ)Q and quark-antiquark (Q Q) configurations. The gauge model is pure Yang-Mills SU(3) lattice gauge theory at coupling β = 6.0 and finite temperature. The diquark set up is approximated as two-quarks confined within a sphere of radius 0.1 fm. The lattice data of the potential and energy show that the string binding the diquark-quark (QQ)Q configuration exhibits an identical behavior to the quark-antiquark (Q Q) confining string. However, with the temperature increase to a small enough neighborhood of the critical point Tc, the gluonic symmetries between the two systems do not manifest neither at short nor intermediate distance scales. The comparison between the Polyakov loop correlators and the second moment of the action-density correlators for both system shows significant splitting. This suggests that subsisted baryonic decouplet states overlap with the mesonic spectrum. The baryonic junction's model for the potential and profile returns good fit to the numerical lattice data of the diquarkquark (QQ)Q arrangement. However, near the critical point the mesonic string displays fits with large deviations compared to fits of the corresponding (Q Q) data.

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Flux tubes in N_f = 2 + 1 QCD with external magnetic fields

Cited by 5 publications

References 22 publications

QCD flux tubes across the deconfinement phase transition

QCD flux tubes across the deconfinement phase transition

Effects of a strong magnetic field on the QCD flux tube

Strings of diquark-quark (QQ)Q baryon before phase transition

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