Zobrazeno 1 - 10
of 4 856
pro vyhledávání: '"Pereira, A. G."'
Competition between magnetism and superconductivity can lead to unconventional and topological superconductivity. However, the experimental confirmation of the presence of Majorana edge states and unconventional pairing currently poses a major challe
Externí odkaz:
http://arxiv.org/abs/2408.16499
We study the dynamics of hard-core bosons on ladders, in the presence of strong kinetic constrains akin to those of the Bariev model. We use a combination of analytical methods and numerical simulations to establish the phase diagram of the model. Th
Externí odkaz:
http://arxiv.org/abs/2407.21019
Large-mass condensates, which coexist with a power-law-decaying distribution in the one-dimensional Takayasu model of mass aggregation with input, were recently found in numerical simulations. Here we establish the occurrence of condensates by analyz
Externí odkaz:
http://arxiv.org/abs/2407.09827
We investigate the generic transport in a one-dimensional strongly correlated fermionic chain beyond linear response. Starting from a Gaussian wave packet with positive momentum on top of the ground state, we find that the numerical time evolution sp
Externí odkaz:
http://arxiv.org/abs/2406.05009
We predict a general local spin-flip transition mechanism caused by magnetic quantum impurities in (partially) polarized phases of quantum magnets in the absence of conservation laws. This transition arises when a magnon bound state crosses zero ener
Externí odkaz:
http://arxiv.org/abs/2405.19962
Autor:
Macedo, Rafael A., Pereira, Rodrigo G.
Publikováno v:
Phys. Rev. B 110, 085144 (2024)
Fractonic matter can undergo unconventional phase transitions driven by the condensation of particles that move along subdimensional manifolds. We propose that this type of quantum critical point can be realized in a bilayer of crossed Rydberg chains
Externí odkaz:
http://arxiv.org/abs/2405.02248
Goal Recognition is the task by which an observer aims to discern the goals that correspond to plans that comply with the perceived behavior of subject agents given as a sequence of observations. Research on Goal Recognition as Planning encompasses r
Externí odkaz:
http://arxiv.org/abs/2404.07934
We determine the arrangement of spins in the ground state of the XY model with quenched, random fields, on a fully connected graph. Two types of disordered fields are considered, namely randomly oriented magnetic fields, and randomly oriented crystal
Externí odkaz:
http://arxiv.org/abs/2403.19939
Publikováno v:
npj Quantum Materials 9, 33 (2024)
We formulate a Majorana mean-field theory for the extended $JK\Gamma$ Kitaev model in a magnetic Zeeman field of arbitrary direction, and apply it for studying spatially inhomogeneous states harboring vortices. This mean-field theory is exact in the
Externí odkaz:
http://arxiv.org/abs/2311.15750
Publikováno v:
Phys. Rev. B 109, 075135 (2024)
We use junctions of critical spin-1 chains as the basic elements to construct a honeycomb network that harbors a gapless chiral spin liquid phase. The low-energy modes are described by spin-1 Majorana fermions that form a two-dimensional Fermi surfac
Externí odkaz:
http://arxiv.org/abs/2310.09582