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Nonperturbative estimate of the heavy quark momentum diffusion coefficient
http://hdl.handle.net/2241/00134451
http://hdl.handle.net/2241/00134451d71cd583-7fec-43df-9e9f-148d89dbb98e
名前 / ファイル | ライセンス | アクション |
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PRD_92-11 (415.7 kB)
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Item type | Journal Article(1) | |||||
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公開日 | 2016-01-27 | |||||
タイトル | ||||||
言語 | en | |||||
タイトル | Nonperturbative estimate of the heavy quark momentum diffusion coefficient | |||||
言語 | ||||||
言語 | eng | |||||
資源タイプ | ||||||
資源 | http://purl.org/coar/resource_type/c_6501 | |||||
タイプ | journal article | |||||
アクセス権 | ||||||
アクセス権 | open access | |||||
アクセス権URI | http://purl.org/coar/access_right/c_abf2 | |||||
著者 |
Francis, A.
× Francis, A.× Kaczmarek, O.× Laine, M.× Neuhaus, T.× 大野, 浩史 |
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抄録 | ||||||
内容記述タイプ | Abstract | |||||
内容記述 | 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 192^3×48 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)T^3. This implies that the “drag coefficient,” characterizing the time scale at which heavy quarks adjust to hydrodynamic flow, is η^-1_D=(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. | |||||
言語 | en | |||||
書誌情報 |
en : Physical review D 巻 92, 号 11, p. 116003, 発行日 2015-12 |
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ISSN | ||||||
収録物識別子タイプ | PISSN | |||||
収録物識別子 | 2470-0010 | |||||
書誌レコードID | ||||||
収録物識別子タイプ | NCID | |||||
収録物識別子 | AA00773624 | |||||
DOI | ||||||
関連タイプ | isIdenticalTo | |||||
識別子タイプ | DOI | |||||
関連識別子 | https://doi.org/10.1103/PhysRevD.92.116003 | |||||
権利 | ||||||
言語 | en | |||||
権利情報 | (c) 2015 American Physical Society | |||||
出版タイプ | ||||||
出版タイプ | VoR | |||||
出版タイプResource | http://purl.org/coar/version/c_970fb48d4fbd8a85 | |||||
出版者 | ||||||
言語 | en | |||||
出版者 | American Physical Society |