Geodesic
On the ``even'' mechanism of superfluidity in bose systems
Teoretičeskaâ i matematičeskaâ fizika, Tome 22 (1975) no. 2, pp. 278-287

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Microscopic theory of interacting bose-systems with ground state consisting of the condensate of bound particle pairs is proposed. It is shown that low-frequency excitations and their interactions in such systems are the same as in the bose-liquids with single-particle condensate. Distinctions between the properties of the two types of systems consist in conditions of vortex quantization and in possibility of high-frequency single-particle excitations. 
@article{TMF_1975_22_2_a13,
     author = {P. S. Kondratenko},
     title = {On the ``even'' mechanism of superfluidity in bose systems},
     journal = {Teoreti\v{c}eska\^a i matemati\v{c}eska\^a fizika},
     pages = {278--287},
     publisher = {mathdoc},
     volume = {22},
     number = {2},
     year = {1975},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/TMF_1975_22_2_a13/}
}
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P. S. Kondratenko. On the ``even'' mechanism of superfluidity in bose systems. Teoretičeskaâ i matematičeskaâ fizika, Tome 22 (1975) no. 2, pp. 278-287. http://geodesic.mathdoc.fr/item/TMF_1975_22_2_a13/