Maximal couplings in PT-symmetric chain-models with the real spectrum of energies
| dc.creator | Znojil, Miloslav | |
| dc.date | 2007-03-23 | |
| dc.date.accessioned | 2026-07-07T07:57:06Z | |
| dc.date.available | 2026-07-07T07:57:06Z | |
| dc.description | The domain ${\cal D}$ of all the coupling strengths compatible with the reality of the energies is studied for a family of non-Hermitian $N$ by $N$ matrix Hamiltonians $H^{(N)}$ with tridiagonal and ${\cal PT}-$symmetric structure. At all dimensions $N$, the coordinates are found of the extremal points at which the boundary hypersurface $\partial {\cal D}$ touches the circumscribed sphere (for odd $N=2M+1$) or ellipsoid (for even $N=2K$). | |
| dc.description | 18 pp., 2 figs | |
| dc.identifier | https://arxiv.org/abs/math-ph/0703070 | |
| dc.identifier | http://arxiv.org/abs/math-ph/0703070 | |
| dc.identifier | J. Phys. A: Math. Theor. 40 (2007) 4863-4875 | |
| dc.identifier | doi:10.1088/1751-8113/40/18/012 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/127557 | |
| dc.subject | Mathematical Physics | |
| dc.subject | 81Q10; 13P10; 14J81; 14M12; 46C20; 47B50 | |
| dc.title | Maximal couplings in PT-symmetric chain-models with the real spectrum of energies | |
| dc.type | text |