Physics – Condensed Matter – Strongly Correlated Electrons
Scientific paper
2007-05-14
Nuclear Physics B Vol 795/3 pp 519-548 2008
Physics
Condensed Matter
Strongly Correlated Electrons
24 pages, no figures
Scientific paper
10.1016/j.nuclphysb.2007.10.025
A path-integral for the t-J model in two dimensions is constructed based on Dirac quantization, with an action found originally by Wiegmann (Phys. Rev. Lett. {\bf 60}, 821 (1988); Nucl. Phys. B323, 311 (1989)). Concentrating on the low doping limit, we assume short range antiferromagnetic order of the spin degrees of freedom. Going over to a local spin quantization axis of the dopant fermions, that follows the spin degree of freedom, staggered CP$^1$ fields result and the constraint against double occupancy can be resolved. The staggered CP$^1$ fields are split into slow and fast modes, such that after a gradient expansion, and after integrating out the fast modes and the dopant fermions, a CP$^1$ field-theory with a massive gauge field is obtained that describes generically incommensurate coplanar magnetic structures, as discussed previously in the context of frustrated quantum antiferromagnets. Hence, the possibility of deconfined spinons is opened by doping a colinear antiferromagnet.
Falb J.
Muramatsu Alejandro
No associations
LandOfFree
Massive CP$^1$ theory from a microscopic model for doped antiferromagnets 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 Massive CP$^1$ theory from a microscopic model for doped antiferromagnets, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Massive CP$^1$ theory from a microscopic model for doped antiferromagnets will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-365735