Ground state of a mobile vacancy in a quantum antiferromagnet: Small-cluster study

Authors: 

Veit Elser, David A. Huse, Boris I. Shraiman, and Eric D. Siggia,

Phys. Rev. B 41, 6715-6723 (1990)

https://journals.aps.org/prb/abstract/10.1103/PhysRevB.41.6715