Physics – Condensed Matter – Mesoscale and Nanoscale Physics
Scientific paper
2008-11-20
Physics
Condensed Matter
Mesoscale and Nanoscale Physics
4pages, 2 figures
Scientific paper
10.1088/1742-6596/150/2/022031
Effects of a single impurity potential on bulk properties of a spinful Tomonaga-Luttinger (TL) liquid is studied. A boundary bosonization technique is developed to include the impurity potential of {\it arbitrary} strength $V$. Our new bosonization formula for fermion field $\psi$ smoothly connects the two existing expressions in the strong ($V = \infty$) and the weak ($V = 0$) impurity limits. With use of the formula, we found the TL parameters determined from the long-distance correlation functions are renormalized due to the partial transmission through the impurity potential.
Kamide Kenji
Kimura Takashi
Kurihara Susumu
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