Abstract
We present here results on the fine structure of the static q
potential in d = 4 SU(3) Yang-Mills theory.
The potential is obtained from Polyakov loop correlators having
separations between 0.3 and 1.2 fermi.
Measurements
were carried out on lattices of spatial extents of about 4 and 5.4 fermi. The temporal
extent was 5.4 fermi in both cases.
The results are analyzed in terms of the force between a q pair
as well as in terms of a scaled second derivative of the potential.
The data is accurate enough to distinguish between different effective
string models and it seems to favour the expression for ground state
energy of a Nambu-Goto string.
Export citation and abstract BibTeX RIS