Magnon decay below the critical field in the S=1/2 Heisenberg antiferromagnet...

The two dimensional Heisenberg antiferromagnet on a square lattice is one of the most studied model quantum magnets. This is in part due to its intrinsic interest but also to...二维正方形晶格（square lattice）上的海森堡反铁磁体（Heisenberg antiferromagnet）是研究最为广泛的模型量子磁体之一。这一方面源于其本身的内在研究价值，另一方面也在于……