## Finite-temperature chiral condensate and low-lying Dirac eigenvalues in quenched SU(2) lattice gauge theory

The spectrum of low-lying eigenvalues of the overlap Dirac operator in quenched SU(2) lattice gauge theory with tadpole-improved Symanzik action is studied at finite temperatures in the vicinity of the confinement-deconfinement phase transition defined by the expectation value of the Polyakov line. The value of the chiral condensate obtained from the Banks-Casher relation is found to drop down rapidly at T=T{sub c}, though not going to zero. At T{sub c}{sup '}{approx_equal}1.5T{sub c}{approx_equal}480 MeV the chiral condensate decreases rapidly once again and becomes either very small or zero. At T<T{sub c} the distributions of small eigenvalues are universal and are wellmore »