SCOAP3 Repository 2 records found  Search took 0.02 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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