Infinite-momentum helicity states
19727 pages
Published in:
- Phys.Rev.D 5 (1972) 1956-1962
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Abstract: (APS)
We discuss and generalize to arbitrary spin the kind of single-particle spin states which have appeared naturally in field theories in the infinite-momentum frame. These states transform simply under the Galilean symmetry group which is important in the infinite-momentum frame, rather than under the rotation group. We also find that the spinors U(P,λ) representing these states are very simple.- field theory
- spin: helicity
- helicity: spin
- transformation
- angular momentum
- spinor
- invariance: parity
- parity: invariance
- invariance: time reversal
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