Physics – High Energy Physics – High Energy Physics - Theory
Scientific paper
2004-02-02
Phys.Rev.Lett. 93 (2004) 251601
Physics
High Energy Physics
High Energy Physics - Theory
Corrected expressions in equations (20) and (21)
Scientific paper
10.1103/PhysRevLett.93.251601
In this paper it is shown that an i phi^3 field theory is a physically acceptable field theory model (the spectrum is positive and the theory is unitary). The demonstration rests on the perturbative construction of a linear operator C, which is needed to define the Hilbert space inner product. The C operator is a new, time-independent observable in PT-symmetric quantum field theory.
Bender Carl M.
Brody Dorje C.
Jones Hugh F.
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