UNSPECIFIED (1996) Analytical results for a hole in an antiferromagnet. PHYSICAL REVIEW B, 53 (22). pp. 14717-14720. ISSN 0163-1829

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Abstract

The Green's function for a hole moving in an antiferromagnet is derived analytically in the long-wavelength limit. We find that the infrared divergence is eliminated in two and higher dimensions so that the quasiparticle weight is finite. Our results also suggest that the hole motion is polaronic in nature with a bandwidth proportional to t(2)/J exp[-c(t/J)(2)] (c is a constant) for J/t greater than or equal to 0.5. The connection of the long-wavelength approximation to the first-order approximation in the cumulant expansion is also clarified.

Item Type:	Journal Article
Subjects:	Q Science > QC Physics
Journal or Publication Title:	PHYSICAL REVIEW B
Publisher:	AMERICAN PHYSICAL SOC
ISSN:	0163-1829
Date:	1 June 1996
Volume:	53
Number:	22
Number of Pages:	4
Page Range:	pp. 14717-14720
Publication Status:	Published
URI:	http://wrap.warwick.ac.uk/id/eprint/18759

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