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cond-mat2002
On the unitarity of S-matrix in 1-d case
Dimitar I. Pushkarov
It is shown that the scattering S-matrix is unitary even if the scattering potential U(x) tends to different limits at plus and minus infinity. This result is in contrast to the st…
cond-mat2000★ 1 cited
Comment on "Quantum diffusion of 3-He impurities in solid 4- He"
Dimitar I. Pushkarov
In this comment I show that the experimental data on quantum diffusion of 3-He impurities in solid 4-He can be explained using the adopted quasiparticle theory. The contention by E…