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Is Weak Pseudo-Hermiticity Weaker than Pseudo-Hermiticity?

Quantum Physics 2015-06-26 v3

Abstract

For a weakly pseudo-Hermitian linear operator, we give a spectral condition that ensures its pseudo-Hermiticity. This condition is always satisfied whenever the operator acts in a finite-dimensional Hilbert space. Hence weak pseudo-Hermiticity and pseudo-Hermiticity are equivalent in finite-dimensions. This equivalence extends to a much larger class of operators. Quantum systems whose Hamiltonian is selected from among these operators correspond to pseudo-Hermitian quantum systems possessing certain symmetries.

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Cite

@article{arxiv.quant-ph/0605110,
  title  = {Is Weak Pseudo-Hermiticity Weaker than Pseudo-Hermiticity?},
  author = {Ali Mostafazadeh},
  journal= {arXiv preprint arXiv:quant-ph/0605110},
  year   = {2015}
}

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published version, 10 pages