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- W2290160304 abstract "We propose to consider nonlinear fluctuations in the theory of liquid $^{4}$He deforming the commutation relations between the generalized coordinates and momenta. Generalized coordinates are coefficients of density fluctuations of Bose particles. The deformation parameter takes into account the effects of three- and four-particle correlations in the behavior of a system. This parameter is defined from the experimental values of the elementary excitation spectrum and the structure factor extrapolated to $T=0$ K. The numerical estimation of the ground state energy and the Bose condensate fraction is made. The elementary excitation spectrum and the potential of interaction between the helium atoms are recovered." @default.
- W2290160304 created "2016-06-24" @default.
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- W2290160304 date "2015-09-01" @default.
- W2290160304 modified "2023-10-01" @default.
- W2290160304 title "The theory of a many boson system with the deformed Heisenberg algebra" @default.
- W2290160304 doi "https://doi.org/10.5488/cmp.18.33002" @default.
- W2290160304 hasPublicationYear "2015" @default.
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