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arXiv · 2206.06316

Nonlinear corrections in the quantization of a weakly nonideal Bose gas at zero temperature. II. The general case

Mikhail N. Smolyakov
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Abstract

In the present paper, discussion of the canonical quantization of a weakly nonideal Bose gas at zero temperature within the framework of the Bogolyubov approach is continued. Contrary to the previous paper on this subject, here the two-body interaction potential is considered in the general form. It is shown that in such a case consideration of the first nonlinear correction also leads to the automatic particle number conservation without any additional assumptions or modification of the resulting effective Hamiltonian.

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Mikhail N. Smolyakov. 2022-06-13. Nonlinear corrections in the quantization of a weakly nonideal Bose gas at zero temperature. II. The general case. https://doi.org/10.1016/j.chaos.2022.113023

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