Impurity entropy for the two-channel Kondo model

A. V. Rozhkov

Research output: Contribution to journalArticlepeer-review

8 Citations (Scopus)


In this paper the entropy of the two-channel Kondo impurity is calculated. We demon strate that the exactly solvable system of finite size can be described in terms of free fermions. None of these fermions is Majorana fermion. This allows us to find the impurity entropy S(T, L) for arbitrary values of T and L. As found before, S(T = 0, L = ∞) equals to (1/2) In 2. For finite L the entropy shows a cross-over to the infinite-size behavior at T > TL = vF / L, in agreement with results of other researchers.

Original languageEnglish
Pages (from-to)3457-3463
Number of pages7
JournalInternational Journal of Modern Physics B
Issue number32
Publication statusPublished - 30 Dec 1998
Externally publishedYes


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