Log-anharmonic oscillator and its large-N solution

0499115 - ÚJF 2019 RIV SG eng J - Článek v odborném periodiku
Znojil, Miloslav - Semorádová, Iveta
Log-anharmonic oscillator and its large-N solution.
Modern Physics Letters A. Roč. 33, č. 38 (2018), č. článku 1850223. ISSN 0217-7323. E-ISSN 1793-6632
Grant CEP: GA ČR GA16-22945S
Institucionální podpora: RVO:61389005
Klíčová slova: confining interactions * soft central repulsion * large-N expansion method * logarithmic anharmonicity
Obor OECD: Atomic, molecular and chemical physics (physics of atoms and molecules including collision, interaction with radiation, magnetic resonances, Mössbauer effect)
Impakt faktor: 1.367, rok: 2018

Anharmonic oscillator is considered using an unusual, logarithmic form of the anharmonicity. The model is shown connected with the more conventional power-law anharmonicity similar to vertical bar x vertical bar(alpha) in the limit alpha -> 0. An efficient and user-friendly method of the solution of the model is found in the large-N expansion technique.
Trvalý link: http://hdl.handle.net/11104/0291386