0206112v1

related topics
{operator, operators, space}
{equation, function, exp}
{let, theorem, proof}
{cos, sin, state}
{energy, state, states}
{phase, path, phys}

Point Interactions: PT-Hermiticity and Reality of the Spectrum

S. Albeverio, S. M. Fei, P. Kurasov

abstract: General point interactions for the second derivative operator in one dimension are studied. In particular, ${\mathcal P \mathcal T}$-self-adjoint point interactions with the support at the origin and at points $\pm l$ are considered. The spectrum of such non-Hermitian operators is investigated and conditions when the spectrum is pure real are presented. The results are compared with those for standard self-adjoint point interactions.

oai_identifier:
oai:arXiv.org:quant-ph/0206112
categories:
quant-ph
comments:
17 pages
arxiv_id:
quant-ph/0206112
journal_ref:
Lett. Math. Phys. 59, 2002(227-242)
created:
2002-06-18

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