Glueball masses on large lattices

We calculate the scalar and tensor glueball masses on large lattices (ranging from 8 4 to 10 3 × 12) for β = 2.2 to 2.5 in the case of SU(2) and for β = 5.5 to 5.9 in the case of SU(3). In comparing our results to those previously obtained on much smaller lattices we find only small finite-size effects. We confirm previous results on the continuum renormalization group behaviour of the SU(3) 0 ++ and 2 ++ glueball masses