Bethe ansatz solution of the topological Kondo model

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Bethe ansatz solution of the topological Kondo model. / Altland, A.; Béri, B.; Egger, R.; Tsvelik, A. M.

In: Journal of Physics A: Mathematical and Theoretical, Vol. 47, No. 26, 265001, 13.06.2014.

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@article{2f3ebf7ed17a4bd0a82f3b908ec6394a,
title = "Bethe ansatz solution of the topological Kondo model",
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.",
keywords = "Bethe ansatz, non-Fermi liquid behavior, topological Kondo effect",
author = "A. Altland and B. B{\'e}ri and R. Egger and Tsvelik, {A. M.}",
year = "2014",
month = jun,
day = "13",
doi = "10.1088/1751-8113/47/26/265001",
language = "English",
volume = "47",
journal = "Journal of Physics A: Mathematical and Theoretical",
issn = "1751-8113",
publisher = "IOP Publishing",
number = "26",

}

RIS

TY - JOUR

T1 - Bethe ansatz solution of the topological Kondo model

AU - Altland, A.

AU - Béri, B.

AU - Egger, R.

AU - Tsvelik, A. M.

PY - 2014/6/13

Y1 - 2014/6/13

N2 - 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.

AB - 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.

KW - Bethe ansatz

KW - non-Fermi liquid behavior

KW - topological Kondo effect

UR - http://www.scopus.com/inward/record.url?scp=84928536027&partnerID=8YFLogxK

U2 - 10.1088/1751-8113/47/26/265001

DO - 10.1088/1751-8113/47/26/265001

M3 - Article

AN - SCOPUS:84928536027

VL - 47

JO - Journal of Physics A: Mathematical and Theoretical

JF - Journal of Physics A: Mathematical and Theoretical

SN - 1751-8113

IS - 26

M1 - 265001

ER -