Number of the records: 1
Theory of Response to Perturbations in Non-Hermitian Systems Using Five-Hilbert-Space Reformulation of Unitary Quantum Mechanics
- 1.
SYSNO ASEP 0523763 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Theory of Response to Perturbations in Non-Hermitian Systems Using Five-Hilbert-Space Reformulation of Unitary Quantum Mechanics Author(s) Znojil, Miloslav (UJF-V) RID, ORCID, SAI Number of authors 1 Article number 80 Source Title Entropy. - : MDPI
Roč. 22, č. 1 (2020)Number of pages 20 s. Publication form Online - E Language eng - English Country CH - Switzerland Keywords hidden Hermiticity ; Hilbert space metric ; size of perturbations ; stability ; PT symmetry ; nitary quantum evolution Subject RIV BE - Theoretical Physics OECD category Atomic, molecular and chemical physics (physics of atoms and molecules including collision, interaction with radiation, magnetic resonances, Mössbauer effect) Method of publishing Open access Institutional support UJF-V - RVO:61389005 UT WOS 000516825400102 EID SCOPUS 85078530181 DOI 10.3390/e22010080 Annotation Non-Hermitian quantum-Hamiltonian-candidate combination H lambda of a non-Hermitian unperturbed operator H=H0 with an arbitrary 'small' non-Hermitian perturbation lambda W is given a mathematically consistent unitary-evolution interpretation. The formalism generalizes the conventional constructive Rayleigh-Schrodinger perturbation expansion technique. It is sufficiently general to take into account the well known formal ambiguity of reconstruction of the correct physical Hilbert space of states. The possibility of removal of the ambiguity via a complete, irreducible set of observables is also discussed. Workplace Nuclear Physics Institute Contact Markéta Sommerová, sommerova@ujf.cas.cz, Tel.: 266 173 228 Year of Publishing 2021 Electronic address https://doi.org/10.3390/e22010080
Number of the records: 1