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ZhETF, Vol. 149, No. 6, p. 1107 (June 2016)
(English translation - JETP, Vol. 122, No. 6, p. 957, June 2016 available online at )

Vortex rings in Bose gas
Belyaev S.T.

Received: March 31, 2015

DOI: 10.7868/S0044451016060018

PDF (118.8K)

We consider excitations that exist, in addition to phonons, in the ideal Bose gas at zero temperature. These excitations are vortex rings whose energy spectrum is similar to the roton one in liquid helium.

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