## Abstract

Lowest-order cranking about a principal axis breaks down for a system with non-zero (J z)

along its symmetry axis. Such a system should be cranked about an axis at an angle to the

symmetry axis. This can be understood in terms of the Berry phases, which acts like the field

of a magnetic monopole. Possible applications are discussed.

along its symmetry axis. Such a system should be cranked about an axis at an angle to the

symmetry axis. This can be understood in terms of the Berry phases, which acts like the field

of a magnetic monopole. Possible applications are discussed.

Original language | Undefined |
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Journal | Journal of Physics A: Mathematical and General |

Volume | 21 |

Issue number | 9 |

DOIs | |

Publication status | Published - Dec 1988 |

## Keywords

- Approximation : mean field
- Quantum mechanics : Berry phase
- Postulated particle : magnetic monopole
- Symmetry : SU(2)