### Abstract

Fumi's theorem relates the ground state energy to phase shifts and hence the scattering matrix. In turn a theorem associated with the auxiliary particles relates the ground state energy to its self-energy, on shell and implies that the latter can be written in terms of the scattering matrix. These relationships are described along with the role of the infrared divergences.

Original language | English (US) |
---|---|

Pages (from-to) | 179-180 |

Number of pages | 2 |

Journal | Physica B: Condensed Matter |

Volume | 259-261 |

State | Published - 1999 |

### Fingerprint

### Keywords

- Auxiliary particles
- Fumi's theorem
- Kondo problem

### ASJC Scopus subject areas

- Materials Science(all)
- Condensed Matter Physics

### Cite this

*Physica B: Condensed Matter*,

*259-261*, 179-180.

**Auxiliary particles and Fumi's theorem.** / Barnes, Stewart.

Research output: Contribution to journal › Article

*Physica B: Condensed Matter*, vol. 259-261, pp. 179-180.

}

TY - JOUR

T1 - Auxiliary particles and Fumi's theorem

AU - Barnes, Stewart

PY - 1999

Y1 - 1999

N2 - Fumi's theorem relates the ground state energy to phase shifts and hence the scattering matrix. In turn a theorem associated with the auxiliary particles relates the ground state energy to its self-energy, on shell and implies that the latter can be written in terms of the scattering matrix. These relationships are described along with the role of the infrared divergences.

AB - Fumi's theorem relates the ground state energy to phase shifts and hence the scattering matrix. In turn a theorem associated with the auxiliary particles relates the ground state energy to its self-energy, on shell and implies that the latter can be written in terms of the scattering matrix. These relationships are described along with the role of the infrared divergences.

KW - Auxiliary particles

KW - Fumi's theorem

KW - Kondo problem

UR - http://www.scopus.com/inward/record.url?scp=9344236028&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=9344236028&partnerID=8YFLogxK

M3 - Article

AN - SCOPUS:9344236028

VL - 259-261

SP - 179

EP - 180

JO - Physica B: Condensed Matter

JF - Physica B: Condensed Matter

SN - 0921-4526

ER -