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Physical Review B
Calculations have focused on several key aspects of phonon spectra for the stable lattice structures of the Gaussian core model. These structures include the linear array ͑D =1͒, the close-packed triangular lattice ͑D =2͒, and the low-density face-centered and high-density body-centered-cubic lattices ͑D =3͒. In each dimension, compressing the system isotropically eventually causes strong depression of phonon frequencies for wave vectors approaching the Brillouin zone boundary, and thisdoi:10.1103/physrevb.71.024301 fatcat:d7eiwaukafhsfhsqweja36hfem