One-electron singular spectral features of the 1D Hubbard model at finite magnetic field
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. The usual half-filling concepts of one-electron lower...
| Main Authors: | , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Elsevier
2017-01-01
|
| Series: | Nuclear Physics B |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S0550321316303595 |
| _version_ | 1818591799960141824 |
|---|---|
| author | J.M.P. Carmelo T. Čadež |
| author_facet | J.M.P. Carmelo T. Čadež |
| author_sort | J.M.P. Carmelo |
| collection | DOAJ |
| description | 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. The usual half-filling concepts of one-electron lower Hubbard band and upper Hubbard band are defined in terms of the rotated electrons associated with the model Bethe-ansatz solution for all electronic density and spin density values and the whole finite repulsion range. Such rotated electrons are the link of the non-perturbative relation between the electrons and the pseudofermions. Our results further clarify the microscopic processes through which the pseudofermion dynamical theory accounts for the one-electron matrix elements between the ground state and excited energy eigenstates. |
| first_indexed | 2024-12-16T10:18:11Z |
| format | Article |
| id | doaj.art-3fe0d03c5819477cb4d41d2f59649c05 |
| institution | Directory Open Access Journal |
| issn | 0550-3213 1873-1562 |
| language | English |
| last_indexed | 2024-12-16T10:18:11Z |
| publishDate | 2017-01-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Nuclear Physics B |
| spelling | doaj.art-3fe0d03c5819477cb4d41d2f59649c052022-12-21T22:35:23ZengElsevierNuclear Physics B0550-32131873-15622017-01-01914C46155210.1016/j.nuclphysb.2016.11.009One-electron singular spectral features of the 1D Hubbard model at finite magnetic fieldJ.M.P. Carmelo0T. Čadež1Department of Physics, University of Minho, Campus Gualtar, P-4710-057 Braga, PortugalBeijing Computational Science Research Center, Beijing 100193, ChinaThe 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. The usual half-filling concepts of one-electron lower Hubbard band and upper Hubbard band are defined in terms of the rotated electrons associated with the model Bethe-ansatz solution for all electronic density and spin density values and the whole finite repulsion range. Such rotated electrons are the link of the non-perturbative relation between the electrons and the pseudofermions. Our results further clarify the microscopic processes through which the pseudofermion dynamical theory accounts for the one-electron matrix elements between the ground state and excited energy eigenstates.http://www.sciencedirect.com/science/article/pii/S0550321316303595 |
| spellingShingle | J.M.P. Carmelo T. Čadež One-electron singular spectral features of the 1D Hubbard model at finite magnetic field Nuclear Physics B |
| title | One-electron singular spectral features of the 1D Hubbard model at finite magnetic field |
| title_full | One-electron singular spectral features of the 1D Hubbard model at finite magnetic field |
| title_fullStr | One-electron singular spectral features of the 1D Hubbard model at finite magnetic field |
| title_full_unstemmed | One-electron singular spectral features of the 1D Hubbard model at finite magnetic field |
| title_short | One-electron singular spectral features of the 1D Hubbard model at finite magnetic field |
| title_sort | one electron singular spectral features of the 1d hubbard model at finite magnetic field |
| url | http://www.sciencedirect.com/science/article/pii/S0550321316303595 |
| work_keys_str_mv | AT jmpcarmelo oneelectronsingularspectralfeaturesofthe1dhubbardmodelatfinitemagneticfield AT tcadez oneelectronsingularspectralfeaturesofthe1dhubbardmodelatfinitemagneticfield |