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001     279700
005     20220628190224.0
024 7 _ |a 10.1103/PhysRevD.92.116003
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024 7 _ |a 1089-4918
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024 7 _ |a 1550-2368
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100 1 _ |a Francis, A.
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245 _ _ |a Nonperturbative estimate of the heavy quark momentum diffusion coefficient
260 _ _ |a [S.l.]
|c 2015
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264 _ 1 |3 online
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|b American Physical Society (APS)
|c 2015-12-09
264 _ 1 |3 print
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|b American Physical Society (APS)
|c 2015-12-01
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520 _ _ |a We estimate the momentum diffusion coefficient of a heavy quark within a pure SU(3) plasma at a temperature of about 1.5Tc. Large-scale Monte Carlo simulations on a series of lattices extending up to 1923×48 permit us to carry out a continuum extrapolation of the so-called color-electric imaginary-time correlator. The extrapolated correlator is analyzed with the help of theoretically motivated models for the corresponding spectral function. Evidence for a nonzero transport coefficient is found and, incorporating systematic uncertainties reflecting model assumptions, we obtain κ=(1.8–3.4)T3. This implies that the “drag coefficient,” characterizing the time scale at which heavy quarks adjust to hydrodynamic flow, is η−1D=(1.8–3.4)(Tc/T)2(M/1.5  GeV)  fm/c, where M is the heavy quark kinetic mass. The results apply to bottom and, with somewhat larger systematic uncertainties, to charm quarks.
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536 _ _ |a Massive current--current correlators in thermal QCD (jara0108_20141101)
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|f Massive current--current correlators in thermal QCD
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542 _ _ |i 2015-12-09
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700 1 _ |a Kaczmarek, O.
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700 1 _ |a Laine, M.
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700 1 _ |a Neuhaus, T.
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700 1 _ |a Ohno, H.
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773 1 8 |a 10.1103/physrevd.92.116003
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773 _ _ |a 10.1103/PhysRevD.92.116003
|g Vol. 92, no. 11, p. 116003
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