Bulk and shear spectral functions in weakly and strongly coupled Yang-Mills theory
arXiv:1301.3449
Abstract
In this talk, we discuss a number of recent calculations aimed at determining the spectral functions corresponding to various components of the energy momentum tensor in high-temperature SU(N) Yang-Mills theory. The computations reviewed include applications of both weak coupling and gauge/gravity techniques, and thus enable one to access different limits of the quantities. The motivation for the work is twofold: On one hand, the results are hoped to aid the eventual nonperturbative extraction of the bulk and shear viscosities from lattice data, while on the other hand they also enable an immediate comparison of the lattice, perturbative and holographic predictions for certain Euclidean correlators.
8 pages, 5 figures. To appear in the proceedings of the workshop 'Xth Quark Confinement and the Hadron Spectrum', TUM Campus Garching, Munich, October 8-12, 2012
References in corpus (24)
- New Developments in Relativistic Viscous Hydrodynamics
- First Results from Pb+Pb collisions at the LHC
- A calculation of the bulk viscosity in SU(3) gluodynamics
- Violation of the Holographic Viscosity Bound in a Strongly Coupled Anisotropic Plasma
- The stickiness of sound: An absolute lower limit on viscosity and the breakdown of second order relativistic hydrodynamics
- Spectral sum rules for the quark-gluon plasma
- Asymptotics of thermal spectral functions
- On finite-temperature holographic QCD in the Veneziano limit
- Thermal Correlators in the ρ channel of two-flavor QCD
- Towards flavour diffusion coefficient and electrical conductivity without ultraviolet contamination
- The Bulk Channel in Thermal Gauge Theories
- The QGP shear viscosity -- elusive goal or just around the corner?
- Next-to-leading order thermal spectral functions in the perturbative domain
- Correlation functions of the energy-momentum tensor in SU(2) gauge theory at finite temperature
- Ultraviolet asymptotics of scalar and pseudoscalar correlators in hot Yang-Mills theory
- Massive vector current correlator in thermal QCD
- Lattice Gauge Theory Sum Rule for the Shear Channel
- The shear channel spectral function in hot Yang-Mills theory
- The ultraviolet limit and sum rule for the shear correlator in hot Yang-Mills theory
- Spatial correlators in strongly coupled plasmas
- Bulk spectral functions in single and multi-scalar gravity duals
- A shear spectral sum rule in a non-conformal gravity dual
- Highlights from BNL-RHIC
- Spatial scalar correlator in strongly coupled hot N=4 Yang-Mills theory