. "Horizons of stability"@en . . . "Journal of Physics A-Mathematical and Theoretical" . . "Horizons of stability"@en . "370633" . . "16"^^ . "Horizons of stability" . . . . "Znojil, Miloslav" . . "Horizonty stability"@cs . . "Although the quantum bound-state energies may be generated by the so-called PT-symmetric Hamiltonians H = (PHP)-P-dagger not equal H-dagger where P is, typically, parity, the spectrum only remains real and observable (i.e., in the language of physics, the PT-symmetry remains unbroken) inside a domain D of couplings. We show that the boundary. D (i.e., certain stability and observability horizon formed by Kato's exceptional points) remains algebraic (i.e., we determine it by closed formulae) for a certain toy-model family of N-dimensional anharmonic-oscillator-related matrix Hamiltonians H(N) with N = 2, 3, . . . , 11." . "[E893B07D2B90]" . . "24" . "A\u010Dkoliv energie kvantov\u00FDch v\u00E1zan\u00FDch stav\u016F mohou b\u00FDt generov\u00E1ny tzv. PT-symetrick\u00FDmi nehermiteovsk\u00FDmi hamiltoni\u00E1ny, z\u016Fst\u00E1vaj\u00ED re\u00E1ln\u00E9 a pozorovateln\u00E9 uvnit\u0159 oblasti D vazbov\u00FDch konstant. Ukazujeme, \u017Ee hranice D (tj. ur\u010Dit\u00FD horizont stability a pozorovatelnosti tvo\u0159en\u00FD Katoov\u00FDmi vyj\u00EDme\u010Dn\u00FDmi body) z\u016Fst\u00E1v\u00E1 pro ur\u010Dit\u00E9 modely algebraick\u00E1."@cs . . . "Horizonty stability"@cs . "1"^^ . "Although the quantum bound-state energies may be generated by the so-called PT-symmetric Hamiltonians H = (PHP)-P-dagger not equal H-dagger where P is, typically, parity, the spectrum only remains real and observable (i.e., in the language of physics, the PT-symmetry remains unbroken) inside a domain D of couplings. We show that the boundary. D (i.e., certain stability and observability horizon formed by Kato's exceptional points) remains algebraic (i.e., we determine it by closed formulae) for a certain toy-model family of N-dimensional anharmonic-oscillator-related matrix Hamiltonians H(N) with N = 2, 3, . . . , 11."@en . "RIV/61389005:_____/08:00314821!RIV09-AV0-61389005" . "41" . "1"^^ . . "GB - Spojen\u00E9 kr\u00E1lovstv\u00ED Velk\u00E9 Brit\u00E1nie a Severn\u00EDho Irska" . "Horizons of stability" . . "000256388200028" . . "P(GA202/07/1307), P(LC06002), Z(AV0Z10480505)" . . "RIV/61389005:_____/08:00314821" . "1751-8113" . "SYMMETRIC QUANTUM-MECHANICS; NON-HERMITIAN HAMILTONIANS; REAL ENERGY-SPECTRA"@en . .