期刊
JOURNAL OF HIGH ENERGY PHYSICS
卷 -, 期 12, 页码 -出版社
SPRINGER
DOI: 10.1007/JHEP12(2010)078
关键词
Thermal Field Theory; NLO Computations; Lattice Gauge Field Theories
资金
- BMBF
- Academy of Finland [128792]
- Alexander von Humboldt foundation
- Academy of Finland (AKA) [128792, 128792] Funding Source: Academy of Finland (AKA)
Lattice measurements of spatial correlation functions of the operators FF and F (F) over tilde in thermal SU(3) gauge theory have revealed a clear difference between the two channels at intermediate distances, x similar to 1/pi T. This is at odds with the AdS/CFT limit which predicts the results to coincide. On the other hand, an OPE analysis at short distances (x << 1/pi T) as well as effective theory methods at long distances (x >> 1/pi T) suggest differences. Here we study the situation at intermediate distances by determining the time-averaged spatial correlators through a 2-loop computation. We do find unequal results, however the numerical disparity is small. Apart from theoretical issues, a future comparison of our results with time-averaged lattice measurements might also be of phenomenological interest in that understanding the convergence of the weak-coupling series at intermediate distances may bear on studies of the thermal broadening of heavy quarkonium resonances.
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