From self-consistent covariant effective field theories to their Galilean-invariant counterparts
arXiv:0705.3192 · doi:10.1103/PhysRevLett.98.262501
Abstract
We discuss how to obtain the nonrelativistic limit of a self-consistent relativistic effective field theory for dynamic problems. It is shown that the standard v/c expansions yields Galilean invariance only to first order in v/c, whereas second order is required to obtain important contributions such as the spin-orbit force. We propose a modified procedure which is a mapping rather than a strict v/c expansion.
4 pages, accepted for publication in Physical Review Letters
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