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Constraints of time reversal invariance in the polarization structure of reactions

โœ Scribed by Michael J Moravcsik

Book ID
107719557
Publisher
Elsevier Science
Year
1989
Tongue
English
Weight
1009 KB
Volume
195
Category
Article
ISSN
0003-4916

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๐Ÿ“œ SIMILAR VOLUMES

Parity constraints on the polarization s
Parity constraints on the polarization structure of reactions
โœ Michael J Moravcsik ๐Ÿ“‚ Article ๐Ÿ“… 1989 ๐Ÿ› Elsevier Science ๐ŸŒ English โš– 623 KB

The constraints of parity conservation on the observable-amplitude structure of an arbitrary four-particle reaction with arbitrary values of spins are derived in the optimal transversity formalism. Of the submatrices of size 8-by-g, 4-by-4, 2-by-2, and l-by-l, some vanish, and some reduce from size

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โœ Moore, J.; Balents, L. ๐Ÿ“‚ Article ๐Ÿ“… 2007 ๐Ÿ› The American Physical Society ๐ŸŒ English โš– 120 KB

The topological invariants of a time-reversal-invariant band structure in two dimensions are multiple copies of the Z 2 invariant found by Kane and Mele. Such invariants protect the "topological insulator" phase and give rise to a spin Hall effect carried by edge states. Each pair of bands related b