Phys. Rev. Lett. 88, 230402 (2002) [3 pages]Quantum Entropy and Special RelativityReceived 7 March 2002; published 22 May 2002 We consider a single free spin- 1/2 particle. The reduced density matrix for its spin is not covariant under Lorentz transformations. The spin entropy is not a relativistic scalar and has no invariant meaning. © 2002 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevLett.88.230402
DOI:
10.1103/PhysRevLett.88.230402
PACS:
03.65.Ta, 03.30.+p
See AlsoReply: Marek Czachor, Comment on “Quantum Entropy and Special Relativity”, Phys. Rev. Lett. 94, 078901 (2005). Reply: Asher Peres, Petra F. Scudo, and Daniel R. Terno, Peres, Scudo, and Terno Reply:, Phys. Rev. Lett. 94, 078902 (2005). |
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