{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,7,24]],"date-time":"2026-07-24T02:39:03Z","timestamp":1784860743581,"version":"3.55.0"},"reference-count":69,"publisher":"American Physical Society (APS)","issue":"15","license":[{"start":{"date-parts":[[2024,4,23]],"date-time":"2024-04-23T00:00:00Z","timestamp":1713830400000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"DOI":"10.13039\/501100004359","name":"Vetenskapsr\u00e5det","doi-asserted-by":"publisher","award":["2022-03090"],"award-info":[{"award-number":["2022-03090"]}],"id":[{"id":"10.13039\/501100004359","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/501100004359","name":"Vetenskapsr\u00e5det","doi-asserted-by":"publisher","award":["2022-06725"],"award-info":[{"award-number":["2022-06725"]}],"id":[{"id":"10.13039\/501100004359","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/501100004359","name":"Vetenskapsr\u00e5det","doi-asserted-by":"publisher","award":["2018-05973"],"award-info":[{"award-number":["2018-05973"]}],"id":[{"id":"10.13039\/501100004359","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/501100000781","name":"European Research Council","doi-asserted-by":"publisher","award":["854843-FASTCORR"],"award-info":[{"award-number":["854843-FASTCORR"]}],"id":[{"id":"10.13039\/501100000781","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":["journals.aps.org"],"crossmark-restriction":true},"short-container-title":["Phys. Rev. B"],"accepted":{"date-parts":[[2024,3,27]]},"abstract":"<jats:p>Dynamical mean-field theory describes the impact of strong local correlation effects in many-electron systems. While the single-particle spectral function is directly obtained within the formalism, two-particle susceptibilities can also be obtained by solving the Bethe-Salpeter equation. The solution requires handling infinite matrices in Matsubara frequency space. This is commonly treated using a finite frequency cutoff, resulting in slow linear convergence. A decomposition of the two-particle response in local and nonlocal contributions enables a reformulation of the Bethe-Salpeter equation\u00a0inspired by the dual boson formalism. The reformulation has a drastically improved cubic convergence with respect to the frequency cutoff, considerably facilitating the calculation of susceptibilities in multi-orbital systems. This improved convergence arises from the fact that local contributions can be measured in the impurity solver. The dual Bethe-Salpeter equation\u00a0uses the fully reducible vertex which is free from vertex divergences. We benchmark the approach on several systems including the spin susceptibility of strontium ruthenate <a:math xmlns:a=\"http:\/\/www.w3.org\/1998\/Math\/MathML\"><a:mrow><a:msub><a:mi>Sr<\/a:mi><a:mn>2<\/a:mn><\/a:msub><a:msub><a:mi>RuO<\/a:mi><a:mn>4<\/a:mn><\/a:msub><\/a:mrow><\/a:math>, a strongly correlated Hund's metal with three active orbitals.<\/jats:p>\n          <jats:sec>\n            <jats:title\/>\n            <jats:supplementary-material>\n              <jats:permissions>\n                <jats:copyright-statement>Published by the American Physical Society<\/jats:copyright-statement>\n                <jats:copyright-year>2024<\/jats:copyright-year>\n              <\/jats:permissions>\n            <\/jats:supplementary-material>\n          <\/jats:sec>","DOI":"10.1103\/physrevb.109.155157","type":"journal-article","created":{"date-parts":[[2024,4,23]],"date-time":"2024-04-23T15:43:18Z","timestamp":1713886998000},"update-policy":"https:\/\/doi.org\/10.1103\/crossmark-policy","source":"Crossref","is-referenced-by-count":6,"title":["Dual Bethe-Salpeter equation\u00a0for the multiorbital lattice susceptibility within dynamical mean-field theory"],"prefix":"10.1103","volume":"109","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-5436-290X","authenticated-orcid":true,"given":"Erik G. 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R.","family":"Strand","sequence":"additional","affiliation":[{"name":"School of Science and Technology, \u00d6rebro University, SE-701 82 \u00d6rebro, Sweden and Institute for Molecules and Materials, Radboud University, 6525 AJ Nijmegen, the Netherlands"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"16","published-online":{"date-parts":[[2024,4,23]]},"reference":[{"key":"PhysRevB.109.155157Cc1R1","doi-asserted-by":"publisher","DOI":"10.1103\/RevModPhys.70.1039"},{"key":"PhysRevB.109.155157Cc2R1","doi-asserted-by":"publisher","DOI":"10.1103\/PhysRevX.9.021048"},{"key":"PhysRevB.109.155157Cc3R1","doi-asserted-by":"publisher","DOI":"10.1146\/annurev-conmatphys-033117-054137"},{"key":"PhysRevB.109.155157Cc4R1","doi-asserted-by":"publisher","DOI":"10.1126\/science.abh4273"},{"key":"PhysRevB.109.155157Cc5R1","doi-asserted-by":"publisher","DOI":"10.1103\/PhysRevLett.62.324"},{"key":"PhysRevB.109.155157Cc6R1","doi-asserted-by":"publisher","DOI":"10.1103\/RevModPhys.68.13"},{"key":"PhysRevB.109.155157Cc7R1","doi-asserted-by":"publisher","DOI":"10.1103\/RevModPhys.90.025003"},{"key":"PhysRevB.109.155157Cc8R1","doi-asserted-by":"publisher","DOI":"10.1146\/annurev-conmatphys-090921-033948"},{"key":"PhysRevB.109.155157Cc9R1","doi-asserted-by":"publisher","DOI":"10.1103\/PhysRevB.96.235127"},{"key":"PhysRevB.109.155157Cc10R1","doi-asserted-by":"publisher","DOI":"10.1103\/PhysRevB.107.205108"},{"key":"PhysRevB.109.155157Cc11R1","doi-asserted-by":"publisher","DOI":"10.1051\/sfn\/20141301002"},{"key":"PhysRevB.109.155157Cc12R1","volume-title":"Waves and Interactions in Solid State Plasmas","author":"P.\u00a0M. 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