research article
Quantum renormalization of high-energy excitations in the 2D Heisenberg model
We find using Monte Carlo simulations of the spin-1/2 2D square lattice nearest neighbour quantum Heisenberg antiferromagnet that the high-energy peak locations at (pi, 0) and (pi/2, pi/2) differ by about 6%, (pi/2, pi/2) being the highest This is a deviation from linear spin wave theory which predicts equal magnon energies at these points.
Type
research article
Author(s)
Syljuasen, O. F.
Date Issued
2000
Published in
Volume
12
Issue
25
Start page
L405
End page
L408
Subjects
Note
NORDITA, DK-2100 Copenhagen O, Denmark. Riso Natl Lab, Condensed Matter Phys & Chem Dept, DK-4000 Roskilde, Denmark. Syljuasen, OF, NORDITA, Blegdamsvej 17, DK-2100 Copenhagen O, Denmark.
Editorial or Peer reviewed
REVIEWED
Written at
EPFL
EPFL units
Available on Infoscience
January 24, 2007
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