From four- to two-channel Kondo effect in junctions of XY spin chains

Autor: Domenico Giuliano, Pasquale Sodano, Arturo Tagliacozzo, Andrea Trombettoni

Publikováno v: Nuclear Physics B, Vol 909, Iss C, Pp 135-172 (2016)

We consider the Kondo effect in Y-junctions of anisotropic XY models in an applied magnetic field along the critical lines characterized by a gapless excitation spectrum. We find that, while the boundary interaction Hamiltonian describing the junctio

Externí odkaz: https://doaj.org/article/40bc3ab12fa446d6a93631cd78fc4d5f

Engineering Long Range Distance Independent Entanglement through Kondo Impurities in Spin Chains

Autor: Sougato Bose, Pasquale Sodano, Abolfazl Bayat

Publikováno v: Electronic Proceedings in Theoretical Computer Science, Vol 26, Iss Proc. DCM 2010, Pp 33-46 (2010)

We investigate the entanglement properties of the Kondo spin chain when it is prepared in its ground state as well as its dynamics following a single bond quench. We show that a true measure of entanglement such as negativity enables to characterize

Externí odkaz: https://doaj.org/article/4ab4123863fc4e74961817363986e0aa

Lindblad master equation approach to the topological phase transition in the disordered Su-Schrieffer-Heeger model

Autor: Andrea Nava, Gabriele Campagnano, Pasquale Sodano, Domenico Giuliano

Publikováno v: Physical Review B. 107

We use the Lindblad equation method to investigate the onset of a mobility edge and the topological phase transition in the disordered SSH chain connected to two external baths in the large bias limit. From the scaling properties of the nonequilibriu

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::472e2efefb52b372877e8277ea1e2479
https://doi.org/10.1103/physrevb.107.035113

Violation of the Wiedemann-Franz law in the Topological Kondo model

Autor: Domenico Giuliano, Andrea Nava, Pasquale Sodano, Reinhold Egger, Francesco Buccheri

We study the thermal transport through a Majorana island connected to multiple external quantum wires. In the presence of a large charging energy, we find that the Wiedemann-Franz law is nontrivially violated at low temperature, contrarily to what ha

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5e4fd73448d9481a54939856eb41b458

Quantum thermodynamics at impurity quantum phase transitions

Autor: Tony J. G. Apollaro, Gabriele De Chiara, Henrik Johannesson, Pasquale Sodano, Sougato Bose, Simone Paganelli, Abolfazl Bayat

Publikováno v: Bayat, A, De Chiara, G, Apollaro, T J G, Paganelli, S, Johannesson, H, Sodano, P & Bose, S 2020, Quantum thermodynamics at impurity quantum phase transitions . in Springer Proceedings in Physics . Springer Proceedings in Physics, vol. 239, Springer, pp. 361-373 . https://doi.org/10.1007/978-3-030-35473-2_17
Springer Proceedings in Physics ISBN: 9783030354725

The study of quantum thermodynamics, i.e. equilibrium and non-equilibrium thermodynamics of quantum systems, has been applied to various many-body problems, including quantum phase transitions. An important question is whether out-of-equilibrium quan

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::cfc81c71e299979ed6cbf18faad096de
https://pure.qub.ac.uk/en/publications/55027955-09a1-4fad-96f5-8e565d918a87