Abstract
It has been shown that, if the amplitude of uniform time-periodic variation in the density of a quasi-one-dimensional Bose gas exceeds a certain critical value, interactions between acoustic phonons lead to the formation of the condensate of correlated phonon pairs with energy equal to half the frequency of the gas-density oscillations.
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Translated from Pis’ma v Zhurnal Éksperimental’no\(\overset{\lower0.5em\hbox{$\smash{\scriptscriptstyle\smile}$}}{l}\) i Teoretichesko\(\overset{\lower0.5em\hbox{$\smash{\scriptscriptstyle\smile}$}}{l}\) Fiziki, Vol. 80, No. 8, 2004, pp. 627–632.
Original Russian Text Copyright © 2004 by Manakova.