### Abstract

We introduce a new method of replacing spin operators with pseudofermions. For a spin value S there are 2S pseudofermions each of which can have spin up or down. In contrast to the standard Abrikosov method which has 2S+1 inequivalent fermions, i.e., one for each Sz value, the present pairs are all equivalent. It follows that the general spin expression is obtained by multiplying the S=(1/2 result by a ceratin combinational factor. This aids in the construction of rotationally invariant solutions for the general-spin Kondo problem for the case when n2S, where n is the number of conduction-electron scattering channels.

Original language | English (US) |
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Pages (from-to) | 2220-2222 |

Number of pages | 3 |

Journal | Physical Review B |

Volume | 37 |

Issue number | 4 |

DOIs | |

State | Published - Jan 1 1988 |

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### ASJC Scopus subject areas

- Condensed Matter Physics