Abstract
We investigate the discretization errors affecting correlators of the energy-momentum tensor Tμν at finite temperature in SU(Nc) gauge theory with the Wilson action and two different discretizations of Tμν. We do so by using lattice perturbation theory and non-perturbative Monte-Carlo simulations. These correlators, which are functions of Euclidean time x0 and spatial momentum p, are the starting point for a lattice study of the transport properties of the gluon plasma. We find that the correlator of the energy ∫d3x T00 has much larger discretization errors than the correlator of momentum ∫d3x T0k. Secondly, the shear and diagonal stress correlators (T12 and Tkk) require Nτ ⩾ 8 for the Tx0 = ½ point to be in the scaling region and the cutoff effect to be less than 10%. We then show that their discretization errors on an anisotropic lattice with aσ/aτ = 2 are comparable to those on the isotropic lattice with the same temporal lattice spacing. Finally, we also study finite p correlators.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
