Universität zu Köln

Altland, A., Beri, B., Egger, R. and Tsvelik, A. M. (2014). Bethe ansatz solution of the topological Kondo model. J. Phys. A-Math. Theor., 47 (26). BRISTOL: IOP PUBLISHING LTD. ISSN 1751-8121

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Abstract

Conduction electrons coupled to a mesoscopic superconducting island hosting Majorana bound states have been shown to display a topological Kondo effect with robust non-Fermi liquid correlations. With M bound states coupled to M leads, this is an SO(M) Kondo problem, with the asymptotic high and low-energy theories known from bosonization and conformal field theory studies. Here we complement these approaches by analyzing the Bethe ansatz equations describing the exact solution of these models at all energy scales. We apply our findings to obtain nonperturbative results on the thermodynamics of M -> M - 2 crossovers induced by tunnel couplings between adjacent Majorana bound states.

Item Type:	Journal Article
Creators:	Creators Email ORCID ORCID Put Code Altland, A. UNSPECIFIED UNSPECIFIED UNSPECIFIED Beri, B. UNSPECIFIED UNSPECIFIED UNSPECIFIED Egger, R. UNSPECIFIED UNSPECIFIED UNSPECIFIED Tsvelik, A. M. UNSPECIFIED UNSPECIFIED UNSPECIFIED
URN:	urn:nbn:de:hbz:38-434050
DOI:	10.1088/1751-8113/47/26/265001
Journal or Publication Title:	J. Phys. A-Math. Theor.
Volume:	47
Number:	26
Date:	2014
Publisher:	IOP PUBLISHING LTD
Place of Publication:	BRISTOL
ISSN:	1751-8121
Language:	English
Faculty:	Unspecified
Divisions:	Unspecified
Subjects:	no entry
Uncontrolled Keywords:	Keywords Language MAJORANA FERMIONS; 2 DIMENSIONS; NANOWIRE; SUPERCONDUCTOR; SIGNATURE; SYSTEMS; FIELD Multiple languages Physics, Multidisciplinary; Physics, Mathematical Multiple languages
URI:	http://kups.ub.uni-koeln.de/id/eprint/43405