Validity of scaling relations in absorbing phase transitions with a conserved field

The two scaling relations in absorbing phase transitions, nu(parallel to)=beta/theta and z=nu(parallel to)/nu(perpendicular to), are studied for a conserved lattice gas model. The critical indices calculated elaborately from the all-sample average density of active particles appear to satisfy both relations. However, the exponent nu(perpendicular to) calculated from the surviving samples does not appear to be consistent with the value in the thermodynamic limit. This is in contrast with earlier observations [M. Rossi , Phys. Rev. Lett. 85, 1803 (2000); S. Lubeck and P. C. Heger, Phys. Rev. E. 68, 056102 (2003)], in that the former scaling relation was claimed to be violated.