Emergent Fermi Surface in a Triangular-Lattice SU(4) Quantum Antiferromagnet
Anna Keselman, Bela Bauer, Cenke Xu, Chao‐Ming Jian
Abstract
Motivated by multiple possible physical realizations, we study the SU(4) quantum antiferromagnet with a fundamental representation on each site of the triangular lattice. We provide evidence for a gapless liquid ground state of this system with an emergent Fermi surface of fractionalized fermionic partons coupled with a U(1) gauge field. Our conclusions are based on numerical simulations using the density matrix renormalization group method, which we support with a field theory analysis.
Topics & Concepts
Density matrix renormalization groupPhysicsPartonFermi surfaceHexagonal latticeCondensed matter physicsAntiferromagnetismGapless playbackQuantumQuantum spin liquidQuantum mechanicsGround stateLattice field theoryLattice (music)Lattice gauge theoryLuttinger liquidGauge theoryQuantum chromodynamicsElectronAcousticsSuperconductivitySpin polarizationPhysics of Superconductivity and MagnetismAdvanced Condensed Matter PhysicsQuantum many-body systems