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caveman1917
2010-Jun-27, 01:24 PM
This is a question i had while reading through an ATM-thread, so i thought i'd just repost it here rather than take that thread further off-track.

A virtual particle is defined (i think) as a particle which satisfies
E != pc + m₀c⁴ for some small enough Δt. Where m₀ is a constant (the rest mass of the particle).

Could this equally well be defined as satisfying
E = pc + m₀c⁴ for some small enough Δt. Where m₀ is not a constant (thus not equal to the 'normal' rest mass of the particle)?