Zobrazeno 1 - 10
of 248
pro vyhledávání: '"Sacramento, P D"'
Research on topological models unveils fascinating physics, especially in the realm of dynamical quantum phase transitions (DQPTs). However, the understanding of entanglement structures and properties near DQPT in models with longer-range hoppings is
Externí odkaz:
http://arxiv.org/abs/2407.15331
In a class of periodically driven systems, multifractal states in non-equilibrium conditions and robustness of dynamical localization when the driving is made aperiodic have received considerable attention. In this paper, we explore a family of one-d
Externí odkaz:
http://arxiv.org/abs/2311.03879
Publikováno v:
Physical Review Research 5, 043058 (2023)
The coexistence in the low-temperature spin-conducting phases of the zigzag materials BaCo2V2O8 and SrCo2V2O8 of one-dimensional (1D) physics with important deviations from it is not well understood. The studies of this paper account for an important
Externí odkaz:
http://arxiv.org/abs/2310.12099
Autor:
Madeira, M. F., Sacramento, P. D.
Publikováno v:
Phys Rev B 106 224505 (2022)
We study the effects of quasidisorder and Anderson disorder on a two dimensional topological superconductor with an applied external magnetic field. The cases of a $p$-wave superconductor and a noncentrosymmetric superconductor with mixed $p$ and $s$
Externí odkaz:
http://arxiv.org/abs/2212.00407
Autor:
Sacramento, P. D., Madeira, M. F.
Publikováno v:
Physical Review B 106, 085130 (2022)
We consider the influence of topological phases, or their vicinity, on the spin density and spin polarization through a chiral chain. We show the quantization of the Berry phase in a one-dimensional polarization helix structure, under the presence of
Externí odkaz:
http://arxiv.org/abs/2208.10807
Publikováno v:
Nuclear Physics B 974, 115610 (2022)
Dynamical correlation functions contain important physical information on correlated spin models. Here a dynamical theory suitable suitable to the isotropic spin-1/2 Heisenberg chain in a longitudinal magnetic field is extended to anisotropy larger t
Externí odkaz:
http://arxiv.org/abs/2111.13118
Publikováno v:
Physical Review B 103, 195129 (2021)
Here the line shape of the up- and down-spin one-particle spectral functions at and in the (k,energy)-plane's vicinity of their cusp singularities is studied for the Mott-Hubbard insulator described by the 1D Hubbard model with one fermion per site a
Externí odkaz:
http://arxiv.org/abs/2105.06721
Publikováno v:
Phys. Rev. B 104, 085104 (2021)
Dynamical quantum phase transitions (DQPTs), which refer to the criticality in time of a quantum many-body system, have attracted much theoretical and experimental research interest recently. Despite DQPTs are defined and signalled by the non-analyti
Externí odkaz:
http://arxiv.org/abs/2105.02449
Publikováno v:
Phys. Rev. B 104, 125129 (2021)
We investigate the nonequilibrium dynamics of the spinless Haldane model with nearest-neighbor interactions on the honeycomb lattice by employing an unbiased numerical method. In this system, a first-order transition from the Chern insulator (CI) at
Externí odkaz:
http://arxiv.org/abs/2105.01845
Publikováno v:
Nuclear Physics B 960, 115175 (2020)
Recently there has been a renewed interest in the spectra and role in dynamical properties of excited states of the spin-1/2 Heisenberg antiferromagnetic chain in longitudinal magnetic fields associated with Bethe strings. The latter are bound states
Externí odkaz:
http://arxiv.org/abs/2009.10499