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Deconfined quantum criticality in Ising gauge theory entangled with single-component fermions
The Hebrew University of Jerusalem, Israel.
The Hebrew University of Jerusalem, Israel.
Karlstad University, Faculty of Health, Science and Technology (starting 2013), Department of Engineering and Physics (from 2013). KTH Royal Institute of Technology, Sweden.ORCID iD: 0000-0002-4615-2507
2024 (English)In: Physical Review B, ISSN 2469-9950, E-ISSN 2469-9969, Vol. 110, no 20, article id L201110Article in journal, Letter (Refereed) Published
Abstract [en]

We highlight the exotic quantum criticality of quasi-two-dimensional single-component fermions at half filling that are minimally coupled to a dynamical Ising gauge theory. With the numerical matrix product state based infinite density matrix renormalization group method, we discover a robust quantum critical line in the infinite cylinder geometry, where gauge confinement and dimerized translation symmetry breaking emerge simultaneously. We investigate how the transition can be split by a Z2 topologically ordered dimerized phase that is stabilized by additional short-range repulsive interactions. We conjecture a u(1) deconfined criticality scenario, propose a corresponding low-energy effective field theory of the exotic quantum critical point in the two-dimensional limit, and identify its shortcomings. 

Place, publisher, year, edition, pages
American Physical Society, 2024. Vol. 110, no 20, article id L201110
Keywords [en]
Cylinders (shapes), Decoding, Gages, Ising model, Matrix algebra, Quantum optics, Density matrix renormalization group methods, Gauge theory, Half-filling, Matrix product state, Numerical matrices, Quantum critical, Quantum criticality, Single components, State based, Two-dimensional, Quantum entanglement
National Category
Condensed Matter Physics
Research subject
Physics
Identifiers
URN: urn:nbn:se:kau:diva-102454DOI: 10.1103/PhysRevB.110.L201110ISI: 001361274100003Scopus ID: 2-s2.0-85210133128OAI: oai:DiVA.org:kau-102454DiVA, id: diva2:1920338
Funder
The Swedish Foundation for International Cooperation in Research and Higher Education (STINT)Swedish Research Council, 2021-03685Available from: 2024-12-11 Created: 2024-12-11 Last updated: 2025-10-16Bibliographically approved

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Moroz, Sergej

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