Analysis of topological structure of the QCD vacuum with overlap-Dirac operator eigenmode

Iritani, Takumi; Cossu, Guido; Hashimoto, S.

doi:10.22323/1.187.0376

Cited by 3 publications

(4 citation statements)

References 17 publications

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“…The ratio of chiral condensate in the 3Q-system r 3Q ( x) is given by substituting the 3Q-Wilson loop W 3Q for the Wilson loop W (R, T ) in Eq. (2.5) [3].…”

Section: Chiral Condensate In Three Quark Systemmentioning

confidence: 99%

“…The topological charge density is constructed by the Dirac eigenfunction using Gattringer's decomposition [3,10]. They show an intersection on the same X-T slice of the four-dimensional lattice.…”

Section: ⋅10 -15mentioning

confidence: 99%

“…For example, a color flux-tube emerges between quark and antiquark, which induces a linearly rising confining potential [1]. This flux-tube can be observed by gluonic degrees of freedom around the color sources from lattice QCD calculations [2,3]. It is also reported that color charges modify the chiral condensate [3,4,5].…”

Section: Introductionmentioning

confidence: 97%

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Partial restoration of chiral symmetry inside hadrons

Iritani

Cossu

Hashimoto

2016

AIP Conference Proceedings

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By using the overlap-Dirac operator eigenmodes, we investigate spatial distribution of the chiral condensate around static color sources for both quark-antiquark and three quark systems. In the presence of color sources, a characteristic flux-tube structure appears among them, suggesting a linear confining potential. We show that the magnitude of the condensate is reduced inside the color flux, which indicates the partial restoration of chiral symmetry inside the hadrons. Considering a periodic box containing a static baryon source, which mimics the nuclear matter, we estimate the chiral symmetry restoration in the presence of finite baryon number density.

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“…The ratio of chiral condensate in the 3Q-system r 3Q ( x) is given by substituting the 3Q-Wilson loop W 3Q for the Wilson loop W (R, T ) in Eq. (2.5) [3].…”

Section: Chiral Condensate In Three Quark Systemmentioning

confidence: 99%

Section: ⋅10 -15mentioning

confidence: 99%

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Partial restoration of chiral symmetry inside hadrons

Iritani

Cossu

Hashimoto

2016

AIP Conference Proceedings

Self Cite

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“…However, lattice QCD demonstrates that the presence of a colour string modifies the QCD vacuum. For example, the correlator between the quark-antiquark chiral condensate, q q , and the Wilson loop, W, is appeared to be not a constant as a function of the transverse distance from a string [51]. Indeed, at large distances it reaches the value of unity, meaning that there is no string influence.…”

Section: String Transverse Dynamicsmentioning

confidence: 98%

Emergent Flow Signal and the Colour String Fusion

Prokhorova,

Andronov

2024

Physics

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In this study, we develop the colour string model of particle production, based on the multi-pomeron exchange scenario, to address the controversial origin of the flow signal measured in proton–proton inelastic interactions. Our approach takes into account the string–string interactions but does not include a hydrodynamic phase. We consider a comprehensive three-dimensional dynamics of strings that leads to the formation of strongly heterogeneous string density in an event. The latter serves as a source of particle creation. The string fusion mechanism, which is a major feature of the model, modifies the particle production and creates azimuthal anisotropy. Model parameters are fixed by comparing the model distributions with the ATLAS experiment proton–proton data at the centre-of-mass energy s=13 TeV. The results obtained for the two-particle angular correlation function, C(Δη,Δϕ), with Δη and Δϕ differences in, respectively, pseudorapidities and azimuthal angles between two particles, reveal the resonance contributions and the near-side ridge. Model calculations of the two-particle cumulants, c2{2}, and second order flow harmonic, v2{2}, also performed using the two-subevent method, are in qualitative agreement with the data. The observed absence of the away-side ridge in the model results is interpreted as an imperfection in the definition of the time for the transverse evolution of the string system.

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Влияние взаимодействия кварк-глюонных струн на корреляции частиц в p+p взаимодействиях

Andronov,

Prokhorova,

Belousov

2023

TMF

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Изучаются начальные состояния p+p взаимодействий и их влияние на чувствительные к ним корреляционные и флуктуационные наблюдаемые посредством рассмотрения процессов мультипомеронного обмена и натяжения цветовых КХД-струн. Исследованы полная струнная динамика, их продольное движение за счет торможения струнных концов и поперечное движение, вызванное притяжением за счет обмена сигма-мезонами с последующим слиянием. Проведены вычисления коэффициента быстротных корреляций, а также сильноинтенсивных переменных, построенных для множественности заряженных частиц $N$ и суммарного попереченого импульса $P_\mathrm{T}$ для неупругих p+p взаимодействий при энергии 200 ГэВ.

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Analysis of topological structure of the QCD vacuum with overlap-Dirac operator eigenmode

Cited by 3 publications

References 17 publications

Partial restoration of chiral symmetry inside hadrons

Partial restoration of chiral symmetry inside hadrons

Emergent Flow Signal and the Colour String Fusion

Влияние взаимодействия кварк-глюонных струн на корреляции частиц в p+p взаимодействиях

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