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Deconfined quantum criticality in Ising gauge theory entangled with single-component fermions
Racah Institute of Physics, The Hebrew University of Jerusalem, Jerusalem 91904, Israel.
Racah Institute of Physics, The Hebrew University of Jerusalem, Jerusalem 91904, Israel; The Fritz Haber Research Center for Molecular Dynamics, The Hebrew University of Jerusalem, Jerusalem 91904, Israel.
Nordita SU; Department of Engineering and Physics, Karlstad University, Karlstad, Sweden.
2024 (English)In: Physical Review B, ISSN 2469-9950, E-ISSN 2469-9969, Vol. 110, no 20, article id L201110Article in journal (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 (APS) , 2024. Vol. 110, no 20, article id L201110
National Category
Condensed Matter Physics Subatomic Physics
Identifiers
URN: urn:nbn:se:kth:diva-357186DOI: 10.1103/PhysRevB.110.L201110ISI: 001361274100003Scopus ID: 2-s2.0-85210133128OAI: oai:DiVA.org:kth-357186DiVA, id: diva2:1918263
Note

QC 20241205

Available from: 2024-12-04 Created: 2024-12-04 Last updated: 2024-12-05Bibliographically approved

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