|Author||Kadanoff, L. P.|
|Source||United States Department of Energy Office of Scientific and Technical Information|
|Subject Keyword||PHYSICS ♦ BETA DECAY ♦ BETA PARTICLES ♦ ELECTRONS ♦ EXCITATION ♦ FIELD THEORY ♦ INTERACTIONS ♦ METALS ♦ NUCLEAR MODELS ♦ NUCLEI ♦ OSCILLATIONS ♦ PARITY ♦ PARTICLE MODELS ♦ PARTICLES ♦ PHONONS ♦ PHOTONS ♦ QUASI PARTICLES ♦ RELAXATION ♦ SHELL MODELS ♦ SPIN ♦ TEMPERATURE ♦ TRANSIENTS|
|Abstract||The range of validity of the quasiparticle picture is investigated by calculation of the temperature dependence of the nuclear spin relaxation time T/ sub 1/. According to the simplest application of the quasiparticle picture, the electronphonon interaction should produce a considerable deviation from the weak coupling law, T/sub 1/T = constant. This deviation is not observed experimentally. A more modern approach, based upon field theoretic techniques, predicts the constancy of T/sub 1/T and hence restores the agreement between theory and experiment. It is argued that the quasiparticle picture is a most inappropriate description of the effects of the electron-phonon interaction in metals. (auth)|
|Learning Resource Type||Article|
|Publisher Department||Univ. of Illinois, Urbana|
|Organization||Univ. of Illinois, Urbana|
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