It is established that a PT -symmetric elliptic quadratic differential operator with real spectrum is similar to a self-adjoint operator precisely when the associated fundamental matrix has no Jordan blocks.

Quadratic PT -symmetric operators with real spectrum and similarity to self-adjoint operators / E.Caliceti; S.Graffi; M.Hitrik; J.Sjoestrand. - In: JOURNAL OF PHYSICS. A, MATHEMATICAL AND THEORETICAL. - ISSN 1751-8113. - STAMPA. - 45:(2012), pp. 444007-444027. [10.1088/1751-8113/45/44/444007]

Quadratic PT -symmetric operators with real spectrum and similarity to self-adjoint operators

CALICETI, EMANUELA;GRAFFI, SANDRO;
2012

Abstract

It is established that a PT -symmetric elliptic quadratic differential operator with real spectrum is similar to a self-adjoint operator precisely when the associated fundamental matrix has no Jordan blocks.
2012
Quadratic PT -symmetric operators with real spectrum and similarity to self-adjoint operators / E.Caliceti; S.Graffi; M.Hitrik; J.Sjoestrand. - In: JOURNAL OF PHYSICS. A, MATHEMATICAL AND THEORETICAL. - ISSN 1751-8113. - STAMPA. - 45:(2012), pp. 444007-444027. [10.1088/1751-8113/45/44/444007]
E.Caliceti; S.Graffi; M.Hitrik; J.Sjoestrand
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11585/132841
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