Local wave grouping in a parameter-gradient system and its formation mechanism

Liao, Huimin; Wu, Yang-Le; Yu, Jianglei; Ouyang, Qi

doi:10.1103/physreve.77.016206

Cited by 4 publications

(3 citation statements)

References 29 publications

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“…where the E(z) integral equation is solved recursively. For radiational processes, the CUJET3 model employs the dynamical DGLV opacity expansion theory [1,3,6,75] with the Liao-Shuryak chromo-magnetic-monopole scenario [76][77][78][79][80]. The inclusive single gluon emission spectrum at n = 1 opacity series reads:…”

Section: A Cujet3 Frameworkmentioning

confidence: 99%

Global constraints from RHIC and LHC on transport properties of QCD fluids in CUJET/CIBJET framework

2019

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We report results of a comprehensive global χ 2 analysis of nuclear collision data from RHIC (0.2 ATeV), LHC1 (2.76 ATeV), and recent LHC2 (5.02 ATeV) energies using the updated CUJET framework. The framework consistently combines viscous hydrodynamic fields predicted by VISHNU2+1 (validated with soft pT < 2 GeV bulk observables) and the DGLV theory of jet elastic and inelastic energy loss generalized to QGP fluids with an sQGMP color structure, including effective semi-QGP color electric quark and gluon as well as emergent color magnetic monopole degrees of freedom constrained by lattice QCD data. We vary the two control parameters of the model (the maximum value of the running QCD coupling, αc, and the ratio cm of color magnetic to electric screening scales) and calculate the global χ 2 (αc, cm) compared with available jet fragment observables (RAA, v2). A global χ 2 < 2 minimum is found with αc ≈ 0.9 ± 0.1 and cm ≈ 0.25 ± 0.03. Using CIBJET, the event-by-event (ebe) generalization of the CUJET framework, we show that ebe fluctuations in the initial conditions do not significantly alter our conclusions (except for v3). An important theoretical advantage of the CUJET and CIBJET frameworks is not only its global χ 2 consistency with jet fragment observables at RHIC and LHC and with non-perturbative lattice QCD data, but also its internal consistency of the constrained jet transport coefficient,q(E, T )/T 3 , with the near-perfect fluid viscosity to entropy ratio (η/s ∼ T 3 /q ∼ 0.1−0.2) property of QCD fluids near Tc needed to account for the low pT < 2 GeV flow observables. Predictions for future tests at LHC with 5.44 ATeV Xe + Xe and 5.02 ATeV Pb + Pb are also presented.

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Section: A Cujet3 Frameworkmentioning

confidence: 99%

Global constraints from RHIC and LHC on transport properties of QCD fluids in CUJET/CIBJET framework

2019

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“…Shuryak and co-workers have also argued for the existence of flux tubes past the transition based on a dual superconductor model of confinement, cf. [17,18]. As we will show in a subsequent article [19], the survival of electric flux tubes at T > T c , in the context of the gluon chain model [20], may also be connected with the persistence (indeed, the increase) of the color Coulomb string tension in the deconfined phase.…”

Section: Discussionmentioning

confidence: 84%

Adjoint torelons, and the persistence of color electric flux tubes in the deconfined phase

Greensite

Olejník

2011

Phys. Rev. D

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It is argued that the adjoint torelon loop, i.e. a Polyakov loop in the adjoint representation running in a spatial, rather than temporal, direction, is an observable which is sensitive to the presence of long color electric flux tubes at high temperatures. We show via lattice Monte Carlo simulations that this observable has a sharp peak at the deconfinement transition, remains much larger than the vacuum value for some range of T > T c , and falls below the vacuum value for T > 2T c . This result suggests that long electric flux tubes may persist for a finite range of temperatures past the deconfinement transition, and at some stage disappear, presumably melting into a plasma of gluons. As a side remark, we point out that our results at T < T c imply that the eigenvalues of ordinary Polyakov loop holonomies in the confinement phase have a slight tendency to attract rather than repel, which may be relevant to certain models of confinement.

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“…In Refs. [11]- [12] the spiral tip was artificially dragged to imitate the meandering spiral waves in the experimental condition. And in Ref.…”

Section: Introductionmentioning

confidence: 99%

Multi-mode Spiral Wave in a Coupled Oscillatory Medium

Wang

Gao

Hua-Ping

et al. 2010

Commun. Theor. Phys.

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Multi-mode spiral wave and its breakup in 1-d and 2-d coupled oscillatory media is studied here by theoretic analysis and numerical simulations. The analysis in 1-d system shows that the dispersion relation curve could be non-monotonic depending on the coupling strength. It may also lead to the coexistence of different wave numbers within one system. Direct numerical observations in 1-d and 2-d systems conform to the prediction of dispersion relation analysis. Our findings indicate that the wave grouping can also be observed in oscillatory media without tip meandering and waves with negative group velocity can occur without inhomogeneity.

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Local wave grouping in a parameter-gradient system and its formation mechanism

Cited by 4 publications

References 29 publications

Global constraints from RHIC and LHC on transport properties of QCD fluids in CUJET/CIBJET framework

Global constraints from RHIC and LHC on transport properties of QCD fluids in CUJET/CIBJET framework

Adjoint torelons, and the persistence of color electric flux tubes in the deconfined phase

Multi-mode Spiral Wave in a Coupled Oscillatory Medium

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