115 citations · 193 across the 9 of their papers we have counts for
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cond-mat1995★ 2 cited
Conservation laws in the continuum systems
Rudolf A. Römer, B. Sriram Shastry, B. Sutherland
We study the conservation laws of both the classical and the quantum mechanical continuum type systems. For the classical case, we introduce new integrals of motion along t…
cond-mat1995★ 12 cited
GAPS IN THE HEISENBERG-ISING MODEL
R. A. Roemer, H. -P. Eckle, B. Sutherland
We report on the closing of gaps in the ground state of the critical Heisenberg-Ising chain at momentum . For half-filling, the gap closes at special values of the anisotropy $Δ…