Journal
PHYSICAL REVIEW B
Volume 77, Issue 13, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevB.77.134437
Keywords
-
Ask authors/readers for more resources
We study the spectral function S(k,omega) for the spin-1, one dimensional antiferromagnetic chain using a time-dependent density matrix renormalizaton group numerical method. We develop methods for extrapolating the time-dependent correlation functions to larger times in order to enhance the frequency resolution. The resulting spectral functions are impressively precise and accurate. Our results confirm many qualitative expectations from nonlinear sigma model methods and test them quantitatively. The critical wave vector at which the single particle excitation emerges from the two-particle continuum is estimated to be 0.23 pi-0.24 pi.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available