New approach to lattice QCD thermodynamics from Yang-Mills gradient flow

20 May 2014, 11:30
20m
platinum (darmstadtium)

platinum

darmstadtium

Schlossgraben 1 64283 Darmstadt Germany
Contributed Talk New Theoretical Developments New theoretical developments

Speaker

Dr Tetsuo Hatsuda (RIKEN)

Description

A novel method to study the bulk thermodynamics in lattice gauge theory is proposed on the basis of the Yang-Mills gradient flow with a fictitious time t. The energy density (epsilon) and the pressure (P) of SU(3) gauge theory at fixed temperature are calculated directly on 32$^3 \times$ (6,8,10) lattices from the thermal average of the well-defined energy-momentum tensor ($T_{\mu \nu}^R(x)$) obtained by the gradient flow. It is demonstrated that the continuum limit can be taken in a controlled manner from the t-dependence of the flowed data. [1] M. Asakawa, T. Hatsuda, E. Itou, M. Kitazawa and H. Suzuki [FlowQCD Coll.], arXiv:1312.7492 [hep-lat].

Primary author

Dr Tetsuo Hatsuda (RIKEN)

Co-authors

Dr Etsuko Itou (KEK) Prof. Hiroshi Suzuki (Kyushu Univ.) Dr Masakiyo Kitazawa (Osaka Univ.) Prof. Masayuki Asakawa (Osaka Univ.)

Presentation Materials