8 citations · 44 across the 12 of their papers we have counts for
Showing 1999Show all
2 papers · 1 filter
quant-ph1999★ 8 cited
Tunnelling series in terms of perturbation theory for quantum spin systems
V. V. Ulyanov, O. B. Zaslavskii
Considered is quantum tunnelling in anisotropic spin systems in a magnetic field perpendicular to the anisotropy axis. In the domain of small field the problem of calculating tunne…
quant-ph1999
Spin systems, spin coherent states and quasi-exactly solvable models
V. V. Ulyanov, O. B. Zaslavskii
Spin coherent states play a crucial role in defining QESM (quasi-exactly solvable models) establishing a strict correspondence between energy spectra of spin systems and low-lying…