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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.
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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.
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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.
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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.
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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.
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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.
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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.
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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.
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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.
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Published in 2017 at "Physical Review E"
DOI: 10.1103/physreve.96.042140
Abstract: In this work we analyze the ground-state properties of the s=1/2 one-dimensional axial next-nearest-neighbor Ising model in a transverse field using the quantum fidelity approach. We numerically determined the fidelity susceptibility as a function of… read more here.
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Published in 2019 at "Physical review. E"
DOI: 10.1103/physreve.99.032129
Abstract: We use numerical linked cluster expansions (NLCEs) to study the site-diluted transverse-field Ising model on the square lattice at T=0. NLCE with a self-consistent mean field on the boundary of the clusters is used to… read more here.