TY - JOUR
T1 - Properties of the one-dimensional Hubbard model
T2 - Cellular dynamical mean-field description
AU - Go, Ara
AU - Jeon, Gun Sang
PY - 2009
Y1 - 2009
N2 - The one-dimensional half-filled Hubbard model is considered at zero temperature within the cellular dynamical mean-field theory (CDMFT). By the computation of the spectral gap and the energy density with various cluster and bath sizes we examine the accuracy of the CDMFT in a systematic way, which proves the accurate description of the one-dimensional systems by the CDMFT with small clusters. We also calculate the spectral weights in a full range of the momentum for various interaction strengths. The results do not only account for the spin-charge separation, but they also reproduce all the features of the Bethe ansatz dispersions, implying that the CDMFT provides an excellent description of the spectral properties of low-dimensional interacting systems.
AB - The one-dimensional half-filled Hubbard model is considered at zero temperature within the cellular dynamical mean-field theory (CDMFT). By the computation of the spectral gap and the energy density with various cluster and bath sizes we examine the accuracy of the CDMFT in a systematic way, which proves the accurate description of the one-dimensional systems by the CDMFT with small clusters. We also calculate the spectral weights in a full range of the momentum for various interaction strengths. The results do not only account for the spin-charge separation, but they also reproduce all the features of the Bethe ansatz dispersions, implying that the CDMFT provides an excellent description of the spectral properties of low-dimensional interacting systems.
UR - http://www.scopus.com/inward/record.url?scp=72249118847&partnerID=8YFLogxK
U2 - 10.1088/0953-8984/21/48/485602
DO - 10.1088/0953-8984/21/48/485602
M3 - Article
C2 - 21832527
AN - SCOPUS:72249118847
SN - 0953-8984
VL - 21
JO - Journal of Physics Condensed Matter
JF - Journal of Physics Condensed Matter
IS - 48
M1 - 485602
ER -