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Scientific paper - Original scientific paper
Kubo's response theory and bosonization with a background gauge field and irrelevant perturbations
Physical Review B, 104 (2021), 23; 235145. https://doi.org/10.1103/PhysRevB.104.235145
Fukusumi, Yoshiki; Barišić, Osor-Slaven

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Fukusumi, Y. & Barišić, O. S. (2021). Kubo's response theory and bosonization with a background gauge field and irrelevant perturbations. Physical Review B, 104. (23). doi: 10.1103/PhysRevB.104.235145

Fukusumi, Yoshiki and Osor Slaven Barišić. "Kubo's response theory and bosonization with a background gauge field and irrelevant perturbations." Physical Review B, vol. 104, no. 23, 2021. https://doi.org/10.1103/PhysRevB.104.235145

Fukusumi, Yoshiki and Osor Slaven Barišić. "Kubo's response theory and bosonization with a background gauge field and irrelevant perturbations." Physical Review B 104, no. 23 (2021). https://doi.org/10.1103/PhysRevB.104.235145

Fukusumi, Y. and Barišić, O. S. (2021) 'Kubo's response theory and bosonization with a background gauge field and irrelevant perturbations', Physical Review B, 104(23). doi: 10.1103/PhysRevB.104.235145

Fukusumi Y, Barišić OS. Kubo's response theory and bosonization with a background gauge field and irrelevant perturbations. Physical Review B [Internet]. 2021 December 23 [cited 2024 October 03];104(23). doi: 10.1103/PhysRevB.104.235145

Y. Fukusumi and O. S. Barišić, "Kubo's response theory and bosonization with a background gauge field and irrelevant perturbations", Physical Review B, vol. 104, no. 23, December 2021. [Online]. Available at: https://urn.nsk.hr/urn:nbn:hr:217:343222. [Accessed: 03 October 2024]

Metadata
Title (english)Kubo's response theory and bosonization with a background gauge field and irrelevant perturbations
AuthorYoshiki Fukusumi
AuthorOsor-Slaven Barišić
Author's institutionUniversity of Zagreb
Faculty of Science
(Department of Physics)
Scientific / art field,
discipline and subdiscipline		NATURAL SCIENCES
Physics
Abstract (english)
Using conformal field theory calculations of the energy spectrum, within the XXZ model we investigate effects of the flux insertion and the Umklapp term. We discuss two approaches to the evaluation of the Drude weight, the first corresponding to the linear response theory and the second corresponding to the twisted boson theory with the Umklapp term. Divergences obtained in the context of the former contradict the Bethe ansatz results, with the two approaches coinciding for the free fermion point only. The origin of this discrepancy is in the different order in which the Umklapp term and the flux insertion are treated, where the marginal perturbation should be considered before the irrelevant perturbation. We calculate the scaling of the conductivity with system size and temperature in the long-wave limit.
Keywords (english)
Languageenglish
Publication typeScientific paper - Original scientific paper
Publication statusPublished
Peer reviewPeer review - international
Publication versionPublished version
Journal titlePhysical Review B
Numberingvol. 104, no. 23, 235145
p-ISSN2469-9950
e-ISSN2469-9969
DOIhttps://doi.org/10.1103/PhysRevB.104.235145
URN:NBNurn:nbn:hr:217:343222
Publication2021-12-23
ProjectNumber: KK.01.1.1.01.0004
Title (croatian): Provedba vrhunskih istraživanja u sklopu Znanstvenog centra izvrsnosti za kvantne i kompleksne sustave te reprezentacije Liejevih algebri
Title (english): Implementation of top research within the Scientific Center of Excellence for Quantum and Complex Systems, and Representations of Lie Algebras
Acronym: QuantiXLie
Leader: Hrvoje Buljan
Jurisdiction: eu
Funding stream: European Regional Development Fund
ProjectNumber: IP-2016-06-7258
Title (croatian): Fizika mnogočestičnih sustava - iskorištavanje svijeta kompleksnosti
Acronym: COMPLEX_ORBIS
Leader: Osor-Slaven Barišić
Jurisdiction: Croatia
Funding stream: Research Projects
Document URLhttps://link.aps.org/doi/10.1103/PhysRevB.104.235145
Type of resourceText
Access conditionsOpen access
Terms of useLicence In copyright icon
Public note© 2021 American Physical Society. Received 20 September 2021; accepted 9 December 2021; published 23 December 2021.
Created on2024-09-18 12:01:32