Exact bounds for dynamical critical exponents of transverse-field Ising chains with a correlated disorder
Sign Up to like & getrecommendations! Published in 2021 at "Annals of Physics"
DOI: 10.1016/j.aop.2021.168483
Abstract: Abstract This study investigates the dynamical critical exponent of disordered Ising chains under transverse fields to examine the effect of a correlated disorder on quantum phase transitions. The correlated disorder, where the on-site transverse field… read more here.
Keywords: disorder; critical exponent; dynamical critical; correlated disorder ... See more keywords
Impact of the magnitude of the magnetization on the induced anisotropy in transverse field annealed nanocrystalline cores
Sign Up to like & getrecommendations! Published in 2020 at "Journal of Magnetism and Magnetic Materials"
DOI: 10.1016/j.jmmm.2019.166316
Abstract: Abstract We study the relation between the induced anisotropy obtained on nanocrystalline Fe 73.0 Cu 1.1 Nb 3.1 Si 15.7 B 7.1 toroidal cores crystallized under transverse field at 570 °C, and the polarization J c… read more here.
Keywords: treated cores; induced anisotropy; field; crystallization process ... See more keywords
Quantum annealing of a frustrated magnet
Sign Up to like & getrecommendations! Published in 2024 at "Nature Communications"
DOI: 10.1038/s41467-024-47819-y
Abstract: Quantum annealing, which involves quantum tunnelling among possible solutions, has state-of-the-art applications not only in quickly finding the lowest-energy configuration of a complex system, but also in quantum computing. Here we report a single-crystal study… read more here.
Keywords: frustrated magnet; quantum; quantum annealing; transverse field ... See more keywords
Phase diagrams and magnetisations of mixed spin nanoparticles with transverse field and crystal field
Sign Up to like & getrecommendations! Published in 2021 at "Philosophical Magazine"
DOI: 10.1080/14786435.2021.1988175
Abstract: ABSTRACT Using the finite cluster approximation, we investigate the phase transitions of two mixed spin 2D-nanoparticles. The effects of the crystal field and the transverse field parameters on phase diagrams and magnetisations have received the… read more here.
Keywords: transverse field; field; crystal field; phase diagrams ... See more keywords
Sharp entanglement thresholds in the logarithmic negativity of disjoint blocks in the transverse-field Ising chain
Sign Up to like & getrecommendations! Published in 2018 at "New Journal of Physics"
DOI: 10.1088/1367-2630/aad9ba
Abstract: Entanglement has developed into an essential concept for the characterization of phases and phase transitions in ground states of quantum many-body systems. In this work, we use the logarithmic negativity to study the spatial entanglement… read more here.
Keywords: disjoint blocks; ising chain; logarithmic negativity; field ising ... See more keywords
Quantum-annealing correction at finite temperature: Ferromagnetic p -spin models
Sign Up to like & getrecommendations! Published in 2017 at "Physical Review A"
DOI: 10.1103/physreva.95.022308
Abstract: The performance of open-system quantum annealing is adversely affected by thermal excitations out of the ground state. While the presence of energy gaps between the ground and excited states suppresses such excitations, error correction techniques… read more here.
Keywords: correction; annealing correction; quantum annealing; penalty ... See more keywords
Tuning the two-step melting of magnetic order in a dipolar kagome spin ice by quantum fluctuations
Sign Up to like & getrecommendations! Published in 2020 at "Physical Review B"
DOI: 10.1103/physrevb.101.134414
Abstract: Complex magnetic orders in frustrated magnets may exhibit rich melting processes when the magnet is heated toward the paramagnetic phase. We show that one may tune such melting processes by quantum fluctuations. We consider a… read more here.
Keywords: quantum fluctuations; sqrt ifmmode; order; transverse field ... See more keywords
Entanglement transition in the projective transverse field Ising model
Sign Up to like & getrecommendations! Published in 2020 at "Physical Review B"
DOI: 10.1103/physrevb.102.094204
Abstract: Discrete quantum trajectories of systems under random unitary gates and projective measurements have been shown to feature transitions in the entanglement scaling that are not encoded in the density matrix. In this paper, we study… read more here.
Keywords: entanglement transition; model; projective transverse; transverse field ... See more keywords
Magnetization oscillations in a periodically driven transverse field Ising chain
Sign Up to like & getrecommendations! Published in 2024 at "Physical Review B"
DOI: 10.1103/physrevb.110.195101
Abstract: We investigate the nonequilibrium dynamics of the magnetization in an Ising chain subjected to a slowly rotating transverse field. The magnetization oscillations are found to be explained by the contributions from different particle excitations in… read more here.
Keywords: magnetization oscillations; ising chain; magnetization; particle ... See more keywords
Level crossings induced by a longitudinal coupling in the transverse field Ising chain
Sign Up to like & getrecommendations! Published in 2017 at "Physical Review B"
DOI: 10.1103/physrevb.95.174404
Abstract: We study the effect of antiferromagnetic longitudinal coupling on the one-dimensional transverse field Ising model with nearest-neighbor couplings. In the topological phase where, in the thermodynamic limit, the ground state is twofold degenerate, we show… read more here.
Keywords: field ising; level crossings; longitudinal coupling; transverse field ... See more keywords
Operator growth in the transverse-field Ising spin chain with integrability-breaking longitudinal field.
Sign Up to like & getrecommendations! Published in 2021 at "Physical review. E"
DOI: 10.1103/physreve.104.034112
Abstract: We investigate the operator growth dynamics of the transverse field Ising spin chain in one dimension as varying the strength of the longitudinal field. An operator in the Heisenberg picture spreads in the extended Hilbert… read more here.
Keywords: operator growth; field; longitudinal field; transverse field ... See more keywords