Eur. Phys. J. Plus (2015) 130: 40
https://doi.org/10.1140/epjp/i2015-15040-6

Regular Article

Parity-violating effects in an exotic perturbation of the rigid rotator

Institute of Physics, Autonomous University at San Luis Potosi, Av. Manuel Nava 6, University Campus, SLP 78290, San Luis Potosi, Mexico

^* e-mail: pallares@ifisica.uaslp.mx

Received: 10 December 2014
Revised: 9 February 2015
Accepted: 16 February 2015
Published online: 9 March 2015

Abstract

The perturbation of the free rigid rotator by the trigonometric Scarf potential is shown to conserve its energy excitation patterns and change only the wave functions towards spherical harmonics rescaled by a function of an unspecified parity, or mixtures of such rescaled harmonics of equal magnetic quantum numbers and different angular momenta. In effect, no parity can be assigned to the states of the rotational bands emerging in this exotic way, and the electric dipole operator is allowed to acquire non-vanishing expectation values.