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Effective Phonon Coupling in Tunneling System
Author(s) -
Ye Z.
Publication year - 1993
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/pssb.2221770209
Subject(s) - quantum tunnelling , renormalization , phonon , coupling constant , physics , dissipative system , coupling (piping) , quantum mechanics , quantum , constant (computer programming) , condensed matter physics , renormalization group , materials science , computer science , metallurgy , programming language
This paper is devoted to the study of the renormalization of wave functions and coupling constant in dissipative two‐state tunneling systems, where the quantum effects of the tunneling particle on the phonon bath, as we will show, cannot be simply ignored. Through a general discussion of the extended objects of quantum origin, the renormalization factors are calculated in a simple approach. The effective phonon coupling constant is obtained. The possible improvement on the calculation of the renormalized tunneling parameter is briefly discussed.