Universal temperature dependence of electron number in one-dimensional Hubbard model

Details Universal temperature dependence of electron number in one-dimensional Hubbard model Universal temperature dependence of electron number in one-dimensional Hubbard model

2009-08-26

arxiv.org/abs/0908.3812v2

J. Phys. Soc. Jpn. vol.78, 104719 (2009)

Physics

Condensed Matter

Strongly Correlated Electrons

4 pages, 4 figures

Scientific paper

We investigate the temperature region in which a Tomonaga-Luttinger liquid (TLL) description of the charge sector of the one-dimensional Hubbard model is valid. By using the thermodynamic Bethe ansatz method, electron number is calculated at finite temperatures and fixed chemical potential. We observe maximum electron number as a function of temperature close to the chemical potential of the upper critical value that corresponds to half filling. As the chemical potential approaches the upper critical value from below, the temperature $(T_{\rm M})$ at which the electron number shows its maximum asymptotically approaches a universal relation. We show that, below the energy corresponding to $T_{\rm M}$, the charge excitation spectrum nearly obeys a linear dispersion relation. The results demonstrate that $T_{\rm M}$ marks the important temperature below which TLL is realized.

Affiliated with

Also associated with

No associations

Rating

Universal temperature dependence of electron number in one-dimensional Hubbard model does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Universal temperature dependence of electron number in one-dimensional Hubbard model, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Universal temperature dependence of electron number in one-dimensional Hubbard model will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-624561