--- res: bibo_abstract: - "We study the effect of a linear tunneling coupling between two-dimensional systems, each separately\r\nexhibiting the topological Berezinskii-Kosterlitz-Thouless (BKT) transition. In the uncoupled limit, there\r\nare two phases: one where the one-body correlation functions are algebraically decaying and the other with\r\nexponential decay. When the linear coupling is turned on, a third BKT-paired phase emerges, in which one-body correlations are exponentially decaying, while two-body correlation functions exhibit power-law\r\ndecay. We perform numerical simulations in the paradigmatic case of two coupled XY models at finite\r\ntemperature, finding evidences that for any finite value of the interlayer coupling, the BKT-paired phase is\r\npresent. We provide a picture of the phase diagram using a renormalization group approach.@eng" bibo_authorlist: - foaf_Person: foaf_givenName: Giacomo foaf_name: Bighin, Giacomo foaf_surname: Bighin foaf_workInfoHomepage: http://www.librecat.org/personId=4CA96FD4-F248-11E8-B48F-1D18A9856A87 orcid: 0000-0001-8823-9777 - foaf_Person: foaf_givenName: Nicolò foaf_name: Defenu, Nicolò foaf_surname: Defenu - foaf_Person: foaf_givenName: István foaf_name: Nándori, István foaf_surname: Nándori - foaf_Person: foaf_givenName: Luca foaf_name: Salasnich, Luca foaf_surname: Salasnich - foaf_Person: foaf_givenName: Andrea foaf_name: Trombettoni, Andrea foaf_surname: Trombettoni bibo_doi: 10.1103/physrevlett.123.100601 bibo_issue: '10' bibo_volume: 123 dct_date: 2019^xs_gYear dct_identifier: - UT:000483587200004 dct_isPartOf: - http://id.crossref.org/issn/0031-9007 - http://id.crossref.org/issn/1079-7114 dct_language: eng dct_publisher: American Physical Society@ dct_title: Berezinskii-Kosterlitz-Thouless paired phase in coupled XY models@ ...