Critical behavior of soft repulsive particles after quench of temperature
near the jamming trasition is numerically investigated. It is found that the
plateau of the mean square displacement of tracer particles and the pressure
satisfy critical scaling laws. The critical density for the jamming transition
depends on the protocol to prepare the system, while the values of the critical
exponents which are consistent with the prediction of a phenomenology are
independent of the protocol.Comment: 7 pages, 9 figures, to appear in Phys. Rev.