Deconfined quantum criticality in Ising gauge theory entangled with single-component fermions
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, 2021-036852024-12-112024-12-112025-10-16Bibliographically approved