Physics – High Energy Physics – High Energy Physics - Lattice
Scientific paper
2008-11-18
Phys.Lett.B672:307-311,2009
Physics
High Energy Physics
High Energy Physics - Lattice
13 pages, 5 figures, uses elsart.cls, the final version to appear in Phys. Lett. B
Scientific paper
10.1016/j.physletb.2009.01.039
We illustrate some physical application of a lattice formulation of the two-dimensional $\mathcal{N}=(2,2)$ supersymmetric SU(2) Yang-Mills theory with a (small) supersymmetry breaking scalar mass. Two aspects, power-like behavior of certain correlation functions (which implies the absence of the mass gap) and the static potential $V(R)$ between probe charges in the fundamental representation, are considered. For the latter, for $R\lesssim1/g$, we observe a linear confining potential with a finite string tension. This confining behavior appears distinct from a theoretical conjecture that a probe charge in the fundamental representation is screened in two-dimensional gauge theory with an adjoint massless fermion, although the static potential for $R\gtrsim1/g$ has to be systematically explored to conclude real asymptotic behavior in large distance.
Kanamori Issaku
Suzuki Hiroshi
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