A question about cold

A hypothetical what if sort of situation using the full range of Japanime technology. Imagine a Mobile Suit that is able to generate a field, a few meters outward of itself and a few centimeters deep, that stays constantly at absolute zero. Everything that enters this field, as well, instantly drops in temperature to absolute zero. So... what would be the defensive properties of this?

I figure it would make RPGs and flamethrowers useless, but how would a zone of constant absolute zero affect momentum or waves like light and radio? What would happen to everyday objects like concrete or cars that this field passed through?

Ignoring the fact that absolute zero is impossible to reach, absolute zero would FUCK SHIT UP.  Anything that entered the field would have all its energy sucked out by whatever is maintaining the absolute zero field.  So everything would just drop dead, including the mobile suit, unless you somehow protected it from the field.  It wouldn't be able to attack because of the same problem.

Basically, that idea is retarded.  You be much better off with just a very low temperature field.