Vacuum energy of two-dimensional N=(2,2) super Yang-Mills theory

Details Vacuum energy of two-dimensional N=(2,2) super Yang-Mills theory Vacuum energy of two-dimensional N=(2,2) super Yang-Mills theory

2009-02-17

arxiv.org/abs/0902.2876v3

Phys.Rev.D79:115015,2009

Physics

High Energy Physics

High Energy Physics - Lattice

6 pages, 6 figures; v2, a reference added, typos corrected; v3, discussion on treatment of Pfaffian is extended (3 figures add

Scientific paper

10.1103/PhysRevD.79.115015

We measure the vacuum energy of two-dimensional N=(2,2) super Yang-Mills theory using lattice simulation. The obtained vacuum energy density is E_0=0.09(9)(+10-8) g^2, where the first error is the systematic and the second is the statistical one, measured in the dimensionful gauge coupling g which governs the scale of the system. The result is consistent with unbroken supersymmetry, although we cannot exclude a possible very small non-zero vacuum energy.

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