One-particle irreducible density matrix for the spin disordered infinite $U$ Hubbard chain
| dc.creator | Cheianov, Vadim V. | |
| dc.creator | Zvonarev, M. B. | |
| dc.date | 2003-11-11 | |
| dc.date.accessioned | 2026-07-07T02:54:43Z | |
| dc.date.available | 2026-07-07T02:54:43Z | |
| dc.description | In this Letter we present a calculation of the one-particle irreducible density matrix $ρ(x)$ for the one-dimensional (1D) Hubbard model in the infinite $U$ limit. We consider the zero temperature spin disordered regime, which is obtained by first taking the limit $U\to \infty$ and then the limit $T\to 0.$ Using the determinant representation for $ρ(x)$ we derive analytical expressions for both large and small $x$ at an arbitrary filling factor $0<\varrho<1/2.$ The large $x$ asymptotics of $ρ(x)$ is found to be remarkably accurate starting from $x\sin(2π\varrho)\sim 1.$ We find that the one-particle momentum distribution function $ρ(k)$ is a smooth function of $k$ peaked at $k=2k_F,$ thus violating the Luttinger theorem. | |
| dc.description | 4 pages, 3 figures | |
| dc.identifier | https://arxiv.org/abs/cond-mat/0311256 | |
| dc.identifier | http://arxiv.org/abs/cond-mat/0311256 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/22665 | |
| dc.subject | Strongly Correlated Electrons | |
| dc.title | One-particle irreducible density matrix for the spin disordered infinite $U$ Hubbard chain | |
| dc.type | text |