Results 31 to 40 of about 4,643 (306)
Translationally Invariant Non-Fermi-Liquid Metals with Critical Fermi Surfaces: Solvable Models
Physical Review X, 2018 We construct examples of translationally invariant solvable models of strongly correlated metals, composed of lattices of Sachdev-Ye-Kitaev dots with identical local interactions.
Debanjan Chowdhury +3 more
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Majorana diagrammatics for quantum spin-1/2 models
SciPost Physics CoreA diagrammatic formalism for lattices of 1/2 is developed. It is based on an unconstrained mapping between spin and Majorana operators. This allows the use of standard tools of diagrammatic quantum many-body theory without requiring projections.
Thibault Noblet, Laura Messio, Riccardo Rossi
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Floquet engineering the band structure of materials with optimal control theory
Physical Review Research, 2022 We demonstrate that the electronic structure of a material can be deformed into Floquet pseudobands with arbitrarily tailored shapes. We achieve this goal with a combination of quantum optimal control theory and Floquet engineering.
Alberto Castro +4 more
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Exact form-factor results for the longitudinal structure factor of the massless XXZ model in zero field [PDF]
, 2012 We consider the XXZ quantum spin chain in its massless, disordered regime at zero field. We derive an exact expression for the two-spinon form-factor of Sz = 1/2σz by taking a limit of the massive XYZ form-factors found by Lashkevich and by Lukyanov and ...
Sorrell, Mark +12 more
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Low-energy structure of spiral spin liquids
Physical Review Research, 2022 In this paper we identify a previously unexplored type of topological defect in spiral spin liquids—the momentum vortex—and reveal its dominant role in shaping the low-energy physics of such systems.
Han Yan (闫寒), Johannes Reuther
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Remarks on the quantum field theory in lattice space. II [PDF]
Communications in Mathematical Physics, 1968 We calculate the Gelfand functionsE(f,g;a) for quantized field φ in lattice space,a being the lattice constant. In the limita → 0 the functionals take on two different forms depending upon the “potential”F[φ] of the lattice Hamiltonian (coupling between different lattice sites not included). IfF[φ] is of a short-range type (see text for definition) the
openaire +4 more sources
Accelerating lattice quantum field theory calculations via interpolator optimization using noisy intermediate-scale quantum computing [PDF]
, 2020 The only known way to study quantum field theories in nonperturbative regimes is using numerical calculations regulated on discrete space-time lattices.
Young, R. D. +5 more
core +1 more source
Microscopic Description of 2D Topological Phases, Duality, and 3D State Sums
Advances in Mathematical Physics, 2010 Doubled topological phases introduced by Kitaev, Levin, and Wen supported on two-dimensional lattices are Hamiltonian versions of three-dimensional topological quantum field theories described by the Turaev-Viro state sum models.
Zoltán Kádár +2 more
doaj +1 more source
Lattice Integrable Models of Quantum Field Theory [PDF]
, 1993 The quantum inverse scattering method allows one to put quantum field theory models on a lattice in a way which preservesthe dynamicalstructure.The trace identitiesare discussedfor thesemodels.
Korepin, V. E. +2 more
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Advanced Engineering Materials, EarlyView.Knowledge‐based atomistic workflows are presented for mechanical and thermodynamic properties. By coupling modular simulations with ontology‐aligned metadata and provenance, Fe case studies on elastic behavior, defects, thermal properties, and Hall–Petch strengthening reveal how FAIR, queryable, and reusable simulation data can be generated. Mechanical
Abril Azócar Guzmán +5 more
wiley +1 more source