  We perform lattice simulations of two-flavor QCD using Neuberger's overlap
fermion, with which the exact chiral symmetry is realized at finite lattice
spacings. The epsilon-regime is reached by decreasing the light quark mass down
to 3 MeV on a 16^3 32 lattice with a lattice spacing \sim 0.11 fm. We find a
good agreement of the low-lying Dirac eigenvalue spectrum with the analytical
predictions of the chiral random matrix theory, which reduces to the chiral
perturbation theory in the epsilon-regime. The chiral condensate is extracted
as \Sigma(2 GeV) = (251(7)(11) MeV)^3, where the errors are statistical and an
estimate of the higher order effects in the epsilon-expansion.

High Energy Physics - Lattice