Physics of crypto-Hermitian and/or cryptosupersymmetric field theories
arXiv:0710.5662 · doi:10.1103/PhysRevD.77.061701
Abstract
We discuss non-Hermitian field theories where the spectrum of the Hamiltonian involves only real energies. We make three observations. (i) The theories obtained from supersymmetric theories by nonanticommutative deformations belong in many cases to this class. (ii) When the deformation parameter is small, the deformed theory enjoys the same supersymmetry algebra as the undeformed one. Half of the supersymmetries are manifest and the existence of another half can be deduced from the structure of the spectrum. (iii) Generically, the conventionally defined S--matrix is not unitary for such theories.
arXiv commentStylistic improvements. References added. The point about what happens in the limit g -> 0 is clarified
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