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JohnSt
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There is an activity in arxiv that is concerned with so-called Unparticles, which are defined as some scale invariant stuff with rather strange behaviour. Does anybody know what is meant in the strict math sense?
As was shown by Wigner long ago, Quantum Mechanics plus Special Relativity implies that all stuff must realize some unitary irreducible representation of the Poincare group (or (anti)-de Sitter if one lives in a world with nonzero cosmological constant). Certain Poincare group representations can be extended to representations of the conformal algebra.
Which representations are associated with unparticles?
As was shown by Wigner long ago, Quantum Mechanics plus Special Relativity implies that all stuff must realize some unitary irreducible representation of the Poincare group (or (anti)-de Sitter if one lives in a world with nonzero cosmological constant). Certain Poincare group representations can be extended to representations of the conformal algebra.
Which representations are associated with unparticles?