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of 159
pro vyhledávání: '"França V"'
In the realm of quantum chemistry, the accurate prediction of electronic structure and properties of nanostructures remains a formidable challenge. Density Functional Theory (DFT) and Density Matrix Renormalization Group (DMRG) have emerged as two po
Externí odkaz:
http://arxiv.org/abs/2402.12463
Entanglement is considered a fundamental ingredient for quantum technologies and condensed matter systems are among the good candidates for quantum devices. For bipartite pure states the von Neumann entropy is a proper measure of entanglement, while
Externí odkaz:
http://arxiv.org/abs/2303.08075
Publikováno v:
Sci Rep 12, 8709 (2022)
We investigate the Mott-Anderson physics in interacting disordered one-dimensional chains through the average single-site entanglement quantified by the linear entropy, which is obtained via density-functional theory calculations. We show that the mi
Externí odkaz:
http://arxiv.org/abs/2202.01557
Autor:
Canella, G. A., França, V. V.
Publikováno v:
Phys. Rev. B 104, 134201 (2021)
A metal can be driven to an insulating phase through distinct mechanisms. A possible way is via the Coulomb interaction, which then defines the Mott metal-insulator transition (MIT). Another possibility is the MIT driven by disorder, the so-called An
Externí odkaz:
http://arxiv.org/abs/2105.12529
Autor:
Arisa, D., França, V. V.
Publikováno v:
Phys. Rev. B 101, 214522 (2020)
We investigate the mapping between magnetic susceptibility and entanglement in the metallic, insulating, conventional and exotic polarized superfluid phases of one-dimensional fermionic lattice systems as described by the Hubbard model. Motivated by
Externí odkaz:
http://arxiv.org/abs/2003.08148
Akademický článek
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Autor:
Canella, G. A., França, V. V.
Publikováno v:
Scientific Reports 9, 15313 (2019)
We use entanglement to track the superfluid-insulator transition (SIT) in disordered fermionic superfluids described by the one-dimensional Hubbard model. Entanglement is found to have remarkable signatures of the SIT driven by i) the disorder streng
Externí odkaz:
http://arxiv.org/abs/1903.04679
Autor:
Canella, G. A., França, V. V.
Publikováno v:
Physica A 545, 123646 (2020)
We investigate the influence of density, interaction and harmonic confinement on the superfluid to insulator transition (SIT) in disordered fermionic superfluids described by the one-dimensional Hubbard model. We quantify the ground-state single-site
Externí odkaz:
http://arxiv.org/abs/1903.04680
Publikováno v:
Scientific Reports 9, 1886 (2019)
In this work we propose an artificial neural network functional to the ground-state energy of fermionic interacting particles in homogeneous chains described by the Hubbard model. Our neural network functional was proven to has an excellent performan
Externí odkaz:
http://arxiv.org/abs/1811.03774
Publikováno v:
Braz. J. Phys. 48, 472 (2018)
Metric spaces are characterized by distances between pairs of elements. Systems that are physically similar are expected to present smaller distances (between their densities, wave functions and potentials) than systems that present different physica
Externí odkaz:
http://arxiv.org/abs/1803.05216