TY - JOUR
T1 - Spectral functions of charmonium with 2+1 flavours of dynamical quarks
AU - Borsányi, Szabolcs
AU - Dürr, Stephan
AU - Fodor, Zoltán
AU - Hoelbling, Christian
AU - Katz, Sándor D.
AU - Krieg, Stefan
AU - Mages, Simon
AU - Nógrádi, Dániel
AU - Pásztor, Attila
AU - Schäfer, Andreas
AU - Szabó, Kálmán K.
AU - Tóth, Bálint C.
AU - Trombitás, Norbert
N1 - Funding Information:
Computations were carried out on GPU clusters at the Universities of Wuppertal and Budapest as well as on supercomputers in Forschungszentrum Juelich. This work was supported by the EU Framework Programme 7 grant (FP7/2007-2013)/ERC No 208740, by the Deutsche Forschungsge-meinschaft grants FO 502/2, SFB-TR 55 and by Hungarian Scientific Research Fund grant OTKA-NF-104034..
Publisher Copyright:
© Copyright owned by the author(s) under the terms of the Creative Commons Attribution-NonCommercial-ShareAlike Licence.
PY - 2014
Y1 - 2014
N2 - Finite temperature charmonium spectral functions in the pseudoscalar(PS) and vector(V) channels are studied in lattice QCD with 2+1 flavours of dynamical Wilson quarks, on fine isotropic lattices (with a lattice spacing of 0.057fm), with a non-physical pion mass of mπ ≈ 545MeV. The highest temperature studied is approximately 1.4Tc. Up to this temperature no significant variation of the spectral function is seen in the PS channel. The V channel shows some temperature dependence, which seems to be consistent with a temperature dependent low frequency peak related to heavy quark transport, plus a temperature independent term at ω > 0. These results are in accord with previous calculations using the quenched approximation. The details of the study can be found in [1].
AB - Finite temperature charmonium spectral functions in the pseudoscalar(PS) and vector(V) channels are studied in lattice QCD with 2+1 flavours of dynamical Wilson quarks, on fine isotropic lattices (with a lattice spacing of 0.057fm), with a non-physical pion mass of mπ ≈ 545MeV. The highest temperature studied is approximately 1.4Tc. Up to this temperature no significant variation of the spectral function is seen in the PS channel. The V channel shows some temperature dependence, which seems to be consistent with a temperature dependent low frequency peak related to heavy quark transport, plus a temperature independent term at ω > 0. These results are in accord with previous calculations using the quenched approximation. The details of the study can be found in [1].
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M3 - Conference article
AN - SCOPUS:85030102226
VL - Part F130500
JO - Proceedings of Science
JF - Proceedings of Science
SN - 1824-8039
M1 - 218
T2 - 32nd International Symposium on Lattice Field Theory, LATTICE 2014
Y2 - 23 June 2014 through 28 June 2014
ER -