Resonating Random Phase Approximation for Excitations in a Superconducting Fermion System with Large Quantum Fluctuations : Condensed Matter and Statistical Physics

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概要

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• We have proposed a theory called the resonating Hartree-Bogoliubov (Res HB) theory to describe large quantum fluctuations in a superconducting Fermion system. One needs also to deal with small quantum fluctuations which correspond to those described by the conventional random phase approximation (RPA). We can derive a new approximation called the Res HB RPA from time dependent small fluctuations of the Res HB ground state. The theory can give a unified description of collective excitations arising from large and small quantum fluctuations and their couplings in a superconducting system. For instance it may be applicable to rotational and vibrational excitations in nuclei with resonance of different deformed shapes.

• 理論物理学刊行会の論文
• 1991-08-25

著者

• FUKUTOME Hideo

  Department of Physics, Kyoto University

• Fukutome Hideo

  Department Of Physics Faculty Of Science Kyoto University

• Nishiyama Seiya

  Department of Physics, Faculty of Science, Kochi University

• Nishiyama S

  Department Of Physics Kochi University

• Nishiyama Seiya

  Department Of Physics Faculty Of Science Kochi University

• NISHIYAMA Seiya

  Department of Physics,Kochi University

• FUKUTOME Hideo

  Department of Physics, Faculty of Science, Kyoto University

• FUKUTOME Hideo

  Department of Physics, Kyoto Unversity

• FUKUTOME Hideo

  Deoartment of Physics, Kyoto University

• NISHIYAMA Seiya

  Research Institute for Fundamental Physics, Kyoto University:Department of Physics, Kochi University

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