Zobrazeno 1 - 10
of 163
pro vyhledávání: '"Carmelo, J. M. P."'
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
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
Publikováno v:
Nuclear Physics B 942, 45-102 (2019)
The momentum, fermionic density, spin density, and interaction dependencies of the exponents that control the (momentum-energy)-plane singular features of the one-fermion spectral functions of a one-dimensional gas of spin-1/2 fermions with repulsive
Externí odkaz:
http://arxiv.org/abs/1903.11984
Akademický článek
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Autor:
Carmelo, J. M. P., Sacramento, P. D.
Publikováno v:
Physics Reports 749, 1 (2018)
Over the last three decades a large number of experimental studies on several quasi one-dimensional (1D) metals and quasi1D Mott-Hubbard insulators have produced evidence for distinct spectral features identified with charge-only and spin-only fracti
Externí odkaz:
http://arxiv.org/abs/1807.11717
Publikováno v:
Nuclear Physics B 930, 418-498 (2018)
Whether in the thermodynamic limit of lattice length infinite, hole concentration tending to zero, nonzero temperature, and U/t > 0 the charge stiffness of the 1D Hubbard model with first neighbor transfer integral t and on-site repulsion U is finite
Externí odkaz:
http://arxiv.org/abs/1803.09564
Publikováno v:
Phys. Rev. B 100, 035105 (2019)
We study the one-electron spectral properties of one-dimensional interacting electron systems in which the interactions have finite range. We employ a mobile quantum impurity scheme that describes the interactions of the fractionalized excitations at
Externí odkaz:
http://arxiv.org/abs/1801.07732
Autor:
Carmelo, J. M. P., Prosen, T.
Publikováno v:
Nuclear Physics B 914, 62-98 (2017)
Whether in the thermodynamic limit, vanishing magnetic field $h\rightarrow 0$, and nonzero temperature the spin stiffness of the spin-$1/2$ $XXX$ Heisenberg chain is finite or vanishes within the grand-canonical ensemble remains an unsolved and contr
Externí odkaz:
http://arxiv.org/abs/1611.08582
Autor:
Carmelo, J. M. P., Cadez, T.
Publikováno v:
Nuclear Physics B 914, 461-552 (2017)
The momentum, electronic density, spin density, and interaction dependences of the exponents that control the $(k,\omega)$-plane singular features of the $\sigma =\uparrow,\downarrow$ one-electron spectral functions of the 1D Hubbard model at finite
Externí odkaz:
http://arxiv.org/abs/1605.09620
We study the dynamical structure factors of the spin-1/2 XXX chain at finite magnetic field h, focusing in particular on the singularities at excitation energies in the vicinity of the lower thresholds of the leading-order dominant excitations. We de
Externí odkaz:
http://arxiv.org/abs/1503.06416