Quasimomentum of an elementary excitation for a system of point bosons under zero boundary conditions

• Published in: Доповіді НАН України
• Date: 2019
• Main Author: Tomchenko, M.D.
• Format: Article
• Language: English
• Published: Видавничий дім "Академперіодика" НАН України 2019
• Subjects: Фізика
• Online Access: https://nasplib.isofts.kiev.ua/handle/123456789/162688
• Journal Title: Digital Library of Periodicals of National Academy of Sciences of Ukraine
• Cite this: Quasimomentum of an elementary excitation for a system of point bosons under zero boundary conditions / M.D. Tomchenko // Доповіді Національної академії наук України. — 2019. — № 12. — С. 49-56. — Бібліогр.: 15 назв. — англ.

As is known, an elementary excitation of a many-particle system with boundaries is not characterized by a definite
 momentum. We obtain the formula for the quasimomentum of an elementary excitation for a one-dimensional
 system of N spinless point bosons under zero boundary condition...