Calculation of the Bulk Viscosity in SU(3) Gluodynamics

Journal Article · Fri Apr 25 00:00:00 EDT 2008 · Physical Review Letters

DOI:https://doi.org/10.1103/PHYSREVLETT.100.162001· OSTI ID:21128070

Meyer, Harvey B ^[1]

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1. Center for Theoretical Physics, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139 (United States)

We perform a lattice Monte Carlo calculation of the trace-anomaly two-point function at finite temperature in the SU(3) gauge theory. We obtain the long distance properties of the correlator in the continuum limit and extract the bulk viscosity {zeta} via a Kubo formula. Unlike the tensor correlator relevant to the shear viscosity, the scalar correlator depends strongly on temperature. If s is the entropy density, we find that {zeta}/s becomes rapidly small at high T, {zeta}/s<0.15 at 1.65T{sub c}, and {zeta}/s<0.015 at 3.2T{sub c}. However, {zeta}/s rises dramatically just above T{sub c}, with 0.5<{zeta}/s<2.0 at 1.02T{sub c}.

• OSTI ID: 21128070
• Journal Information: Physical Review Letters, Vol. 100, Issue 16; Other Information: DOI: 10.1103/PhysRevLett.100.162001; (c) 2008 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 0031-9007
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
ENTROPY
GAUGE INVARIANCE
GLUONS
KUBO FORMULA
MONTE CARLO METHOD
QUANTUM CHROMODYNAMICS
SU-3 GROUPS