The QCD static potential in 2+1 dimensions at weak coupling

Abstract

Using the effective theory pNRQCD we determine the potential energy of a color singlet quark-antiquark pair with (fixed) distance r in three space-time dimensions at weak coupling (alpha r << 1). The precision of our result reaches O(alpha^3 r^2), i.e. NNLO in the multipole expansion, and NNLL in a alpha/DeltaV expansion, where Delta V ~ alpha ln(alpha r). We even include all logarithmic terms up to N^4LL order and compare the outcome to existing lattice data.

Comments: 4 pages, 2 figures; Talk given at QCD 10 - 15th International QCD Conference, 28th June - 3rd July, Montpellier (France); to appear in Nuc. Phys. (Proc. Suppl.)