SCOAP3 Repository 5 records found  Search took 0.21 seconds. 
1. One-particle spectral function singularities in a one-dimensional gas of spin-1/2 fermions with repulsive delta-function interaction / Čadež, T. ; Nemati, S. ; Carmelo, J.M.P.
The momentum, fermionic density, spin density, and interaction dependencies of the exponents that control the (k,ω) -plane singular features of the one-fermion spectral functions of a one-dimensional gas of spin-1/2 fermions with repulsive delta-function interaction both at zero and finite magnetic field are studied in detail. [...]
Published in Nuclear Physics B 942 (2019) 45-102 10.1016/j.nuclphysb.2019.03.013
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2. Absence of ballistic charge transport in the half-filled 1D Hubbard model / Carmelo, J.M.P. ; Nemati, S. ; Prosen, T.
Whether in the thermodynamic limit of lattice length L→∞ , hole concentration mηz=−2Sηz/L=1−ne→0 , nonzero temperature T>0 , 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 or vanishes and thus whether there is or there is no ballistic charge transport, respectively, remains an unsolved and controversial issue, as different approaches yield contradictory results. [...]
Published in Nuclear Physics B 930 (2018) 418-498 10.1016/j.nuclphysb.2018.03.011
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3. One-electron singular spectral features of the 1D Hubbard model at finite magnetic field / Carmelo, J.M.P. ; Čadež, T.
The momentum, electronic density, spin density, and interaction dependences of the exponents that control the (k,ω) -plane singular features of the σ=↑,↓ one-electron spectral functions of the 1D Hubbard model at finite magnetic field are studied. [...]
Published in Nuclear Physics B (2016) 10.1016/j.nuclphysb.2016.11.009
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4. Absence of high-temperature ballistic transport in the spin-1/2 XXX chain within the grand-canonical ensemble / Carmelo, J.M.P. ; Prosen, T.
Whether in the thermodynamic limit, vanishing magnetic field h→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 controversial issue, as different approaches yield contradictory results. [...]
Published in Nuclear Physics B (2016) 10.1016/j.nuclphysb.2016.10.021
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5. Pseudofermion dynamical theory for the spin dynamical correlation functions of the half-filled 1D Hubbard model / Carmelo, J.M.P. ; Čadež, T.
A modified version of the metallic-phase pseudofermion dynamical theory (PDT) of the 1D Hubbard model is introduced for the spin dynamical correlation functions of the half-filled 1D Hubbard model Mott–Hubbard phase. [...]
Published in Nuclear Physics B (2016) 10.1016/j.nuclphysb.2016.01.009
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