Interaction of an Individual Particle with Phonons in an Interacting Many-Boson System

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概要

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• The behavior of an individual particle interacting with phonons in a many-boson system has been investigated in the scheme of the collective description by using the number density operator and the phase operator as the collective variables. For a model-interaction potential which is strong but of long-range, it has been shown that the third order anharmonic terms to appear in this collective description give rise to the backflow effect of the individual particle which has been discarded in the random phase approximation. The Feynman-Cohen wave function and the dipole-type interaction between individual particles transmitted by phonons have been obtained. In relation to Puff's theory of sum rules the spectral function associated with the density-density correlation function for individual particles has also been investigated.

• 理論物理学刊行会の論文
• 1967-11-25

著者

• Nishiyama Toshiyuki

  Institute Of Physics College Of General Education Osaka University

関連論文

• Free Energy of a Nonideal Boson Gas
• Sum Rule and Collective Description
• Interaction of an Individual Particle with Phonons in an Interacting Many-Boson System

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