First, please post Qs to the LAMMPS mailing list. Others may

then comment.

Minimize in LAMMPS means 0K. I don't know what it means

to minimize at a finite T, at least for MD.

To relax at a high T does not mean minimize, but to run dynamics

at a high T and let the system equlibrate. E.g. run a few 1000 steps

with fix nvt or some other thermostat.

To anneal, just means to change the temperature at some desired

rate. The various thermostats can all ramp their target T over the

course of a long run, by specifying an initial and final T. So you

can do an anneal that way.

Steve