Phys. Rev. Lett. 87, 031601 (2001) [4 pages]Gauge Invariances and Phases of Massive Higher Spins in (Anti-) de Sitter SpaceReceived 23 February 2001; published 27 June 2001 The (m2,Λ) plane of spin s>1 massive fields in (anti-) de Sitter space backgrounds is shown to consist of separate phases, divided by lines of novel “partially massless” gauge theories that successively remove helicities, starting from the lowest, 0 or ±1/2. The norms of the excluded states flip as the gauge lines are crossed and only the region containing the massive Minkowski theory is unitary. The partially massless gauge theories are unitary or not, depending on the ordering of the gauge lines. This “level splitting” of massless Minkowski gauge theories is specific to nonzero Λ. © 2001 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevLett.87.031601
DOI:
10.1103/PhysRevLett.87.031601
PACS:
11.10.Kk, 03.65.Pm, 04.62.+v, 11.15.-q
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