Spectral densities for hot QCD plasmas in a leading-log approximation

Hong, Juhee; Teaney, Derek

doi:10.1103/physrevc.82.044908

Cited by 70 publications

(108 citation statements)

References 72 publications

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“…This may be an indication of different non-trivial small frequency behavior as suggested in Ref. [15]. Note that calculations in Ref.…”

Section: Lattice Qcd Resultsmentioning

confidence: 90%

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Momentum dependences of charmonium properties from lattice QCD

Ding¹

2013

Nuclear Physics A

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Charmonia produced in initial hard parton scatterings during heavy ion collisions move with respect to the medium rather than flow with the medium. Lattice studies suggest that charmonium bound states at the rest are dissociated at T 1.5 T c . We present results on momentum dependences of charmonium properties in a hot medium from lattice QCD Monte Carlo simulations. The dispersion relation of the screening mass and the change of correlation and spectral functions at various temperatures and momenta are discussed.

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“…This may be an indication of different non-trivial small frequency behavior as suggested in Ref. [15]. Note that calculations in Ref.…”

Section: Lattice Qcd Resultsmentioning

confidence: 90%

“…Note that calculations in Ref. [15] are done for the light quark modes thus it would be more suitable to have a follow up study on the momentum dependences of the light correlation functions after Ref. [16].…”

Section: Lattice Qcd Resultsmentioning

confidence: 99%

Momentum dependences of charmonium properties from lattice QCD

Ding¹

2013

Nuclear Physics A

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“…(i) The correlation function at τ T = 1/2 is about 2% larger than the corresponding free field value, G ii (1/2)/G f ree ii (1/2) = 1.024 (8) (ii) The deviation from the free field value increases with decreasing Euclidean time. At τ T = 1/4 the ratio is G ii (1/4)/G f ree ii (1/4) = 1.051 (7) (iii) The second moment of the vector spectral function deviates from the free field value by about 7%, G…”

Section: Analysis Of the Vector Current Correlation Functionmentioning

confidence: 99%

“…Depending on the invariant mass regime one can get information on in-medium properties of heavy [1] and light [2] quark bound states. For low invariant masses one enters the hydrodynamic regime where spectral functions reflect transport properties of the thermal medium [3][4][5][6][7][8]. In the case of the vector correlation function and its spectral representation this is characterized by a transport coefficient, the electrical conductivity.…”

Section: Introductionmentioning

confidence: 99%

Thermal dilepton rate and electrical conductivity: An analysis of vector current correlation functions in quenched lattice QCD

et al. 2011

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We calculate the vector current correlation function for light valence quarks in the deconfined phase of QCD. The calculations have been performed in quenched lattice QCD at T ≃ 1.45T c for four values of the lattice cut-off on lattices up to size 128 3 × 48. This allows to perform a continuum extrapolation of the correlation function in the Euclidean time interval 0.2 ≤ τ T ≤ 0.5, which extends to the largest temporal separations possible at finite temperature, to better than 1% accuracy. In this interval, at the value of the temperature investigated, we find that the vector correlation function never deviates from the free correlator for massless quarks by more than 9%. We also determine the first two non-vanishing thermal moments of the vector meson spectral function. The second thermal moment deviates by less than 7% from the free value. With these constraints, we then proceed to extract information on the spectral representation of the vector correlator and discuss resulting consequences for the electrical conductivity and the thermal dilepton rate in the plasma phase.

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“…It is not difficult to extract the logarithmic dependence on µ for µ T . Indeed, let us consider for illustration a leading-log approximation to C 2↔2 [µ]: we expand the distribution function and matrix elements to second order in the exchange momentum Q and arrive at a Fokker-Planck equation [21][22][23] for f p…”

Section: The Kinetic Picture At Leading Ordermentioning

confidence: 99%

Parton energy loss and momentum broadening at NLO in high temperature QCD plasmas

Ghiglieri

Teaney

2015

Int. J. Mod. Phys. E

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We present an overview of a perturbative-kinetic approach to jet propagation, energy loss, and momentum broadening in a high temperature quark-gluon plasma. The leading-order kinetic equations describe the interactions between energetic jet-particles and a non-abelian plasma, consisting of on-shell thermal excitations and soft gluonic fields. These interactions include 2 ↔ 2 scatterings, collinear bremsstrahlung, and drag and momentum diffusion. We show how the contribution from the soft gluonic fields can be factorized into a set of Wilson line correlators on the light cone. We review recent field-theoretical developments, rooted in the causal properties of these correlators, which simplify the calculation of the appropriate Wilson lines in thermal field theory. With these simplifications lattice measurements of transverse momentum broadening have become possible, and the kinetic equations describing parton transport have been extended to next-to-leading order in the coupling g.

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Spectral densities for hot QCD plasmas in a leading-log approximation

Cited by 70 publications

References 72 publications

Momentum dependences of charmonium properties from lattice QCD

Momentum dependences of charmonium properties from lattice QCD

Thermal dilepton rate and electrical conductivity: An analysis of vector current correlation functions in quenched lattice QCD

Parton energy loss and momentum broadening at NLO in high temperature QCD plasmas

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