Auxiliary particles and Fumi's theorem

Stewart E. Barnes

doi:10.1016/S0921-4526(98)01148-X

Auxiliary particles and Fumi's theorem

Stewart E. Barnes

Physics

Research output: Contribution to journal › Article › peer-review

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
DOIs	https://doi.org/10.1016/S0921-4526(98)01148-X
State	Published - Jan 1 1999

Keywords

Auxiliary particles
Fumi's theorem
Kondo problem

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics
Electrical and Electronic Engineering

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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.

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KW - Kondo problem

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Auxiliary particles and Fumi's theorem

Abstract

Keywords

ASJC Scopus subject areas

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