222 papers
Using state-of-the-art matrix product state simulations, this study challenges the conventional view that the two nearly degenerate ground states of the spin-1/2 triangular-lattice - Heisenberg model represent distinct topological sectors of a gapped spin liquid, by demonstrating that they exhibit significant differences in both static correlations and dynamical excitations.
This paper investigates the zero-temperature phase diagrams of two distinct families of bilayer antiferromagnets with SU(2) symmetry, revealing that while both exhibit first-order Néel-to-valence bond solid transitions, their topological differences—specifically the ability to exchange spin versus only energy—lead to the presence or absence of a dimer phase and distinct finite-size scaling behaviors.
This study demonstrates that oxygen isotope substitution () significantly increases the charge-density wave transition temperature in LaNiO while leaving the spin-density wave transition unaffected, indicating that lattice vibrations drive charge ordering whereas spin ordering is primarily electronic in origin.
This study utilizes muon-spin rotation and resistivity measurements to reveal that in the trilayer nickelate LaNiO, pressure suppresses intertwined spin- and charge-density-wave transitions at a uniform rate while oxygen-isotope substitution selectively enhances the charge-density-wave transition, highlighting a distinct coupling between charge and spin orders that differs from bilayer nickelates.
This paper provides a complete classification of symmetric and spin liquids on the pyrochlore lattice within the projective symmetry group framework, identifying novel classes with gapless "nodal star" spinon structures that exhibit distinct low-temperature specific heat scaling compared to standard quantum spin ice.
This paper investigates the boundary critical behavior of the semi-infinite Gross-Neveu-Yukawa model by analyzing its phase diagram, identifying distinct universality classes under various unitary and conformal boundary conditions, and computing the associated boundary critical exponents to one-loop order.
This paper demonstrates that the real-time dynamics of entanglement measures under modular flow are governed by a unified generating function that uniquely determines chiral topological invariants, specifically the chiral central charge and Hall conductance, as validated by both free fermion models and chiral conformal field theory.
This paper demonstrates that incoherent electronic spectra across diverse strongly correlated materials arise from self-generated dynamical disorder and collapse onto a single universal curve described by a parabolic cylinder function, revealing a marginal dynamical regime where microscopic details become irrelevant at low energies.
This paper develops and benchmarks a modified Feynman variational method alongside other generalized analytical approaches to accurately describe lattice polarons in non-parabolic conduction bands across all coupling regimes, demonstrating superior agreement with numerically exact results compared to traditional continuum-based models.
This paper proves that the semimetallic phase of incommensurate twisted bilayer graphene remains stable against large-momentum Umklapp scattering for a large set of twist angles satisfying specific Diophantine conditions, thereby providing a rigorous justification for neglecting these terms in effective continuum descriptions.
Using large-scale Monte Carlo simulations, this study maps the finite-temperature phase diagram of the classical square-lattice Heisenberg-compass model, identifying six ordered phases and demonstrating that transitions between four symmetry-broken phases belong to the Ashkin-Teller universality class terminating at four-state Potts points, while transitions involving -polarized phases exhibit conventional 2D Ising criticality.
This paper identifies BiCuO(SO) as a rare two-leg quantum spin ladder featuring ferromagnetic rungs and exceptionally strong antiferromagnetic legs, a unique magnetic architecture confirmed through a comprehensive combination of experimental measurements and advanced theoretical simulations.
This paper demonstrates that a temporal Berry phase in a clean U(1) nonlinear sigma model induces space-time anisotropic vortex interference, leading to a quasi-disordered phase with short-range spatial order and persistent temporal coherence that shares the essential correlation properties of the disordered Bose Glass phase, thereby suggesting a unified topological origin for glassy behavior in phase-fluctuation-driven superfluid transitions.
This study demonstrates that the cooperative effect of Rashba spin-orbit coupling and Coulomb attraction stabilizes topological spin-triplet excitonic condensates in two-dimensional electron-hole systems, driving a transition from trivial to topological states with a quantized Chern number of and identifying soft spin-up triplet modes as precursors to condensation.
This paper systematically characterizes categorical duality operators on spin and anyon chains with internal fusion category symmetry by parameterizing them via quantum cellular automata and associated bimodule categories, demonstrating that such operators form a simplex whose extreme points correspond to simple objects, and proving that these structures inevitably flow to weakly integral fusion categories in the infrared limit when defined on tensor product Hilbert spaces.
This study reports that the triangular quantum antiferromagnet ErMgGaO exhibits a spin glass transition and a low-energy dynamic magnetic continuum that, when analyzed via inelastic neutron scattering and linear spin wave theory, places the material near the theoretical phase boundary between stripy and 120 ordered states, suggesting a proximate quantum spin liquid ground state.
This paper proposes a categorical framework for hydrodynamics by modeling the approximation of a microscopic theory as a cospan of differential graded manifolds that connects the microscopic and hydrodynamic descriptions through a theory encoding the conservation laws of currents.
These self-contained lecture notes provide an introduction to generalized symmetries, covering higher-form symmetries, anomalies, and discrete gauge theories before exploring non-invertible symmetries and fusion categories in both (1+1)- and (3+1)-dimensional systems without requiring prior knowledge of conformal field theory or lattice models.
This paper presents a rigorous formulation of the downfolding procedure to derive exact effective models for arbitrary target spaces by integrating out high-energy degrees of freedom, establishes conditions for perturbative truncation, formally derives the constrained random phase approximation (cRPA) with identified corrections, and validates the approach using material examples like fcc Nickel and SrCuO.
This study reports the high-pressure synthesis and characterization of metastable marcasite-type MnSb, revealing a complex, temperature-dependent incommensurate magnetic ground state with a spin-density-wave-like order and potential altermagnetic properties.