Collective excitations and superfluid properties of a two-dimensional interacting Bose gas in an external potential

• Published in: Вопросы атомной науки и техники
• Date: 2001
• Main Authors: Fil, D.V., Shevchenko, S.I.
• Format: Article
• Language: English
• Published: Національний науковий центр «Харківський фізико-технічний інститут» НАН України 2001
• Subjects: Quantum fluids
• Online Access: https://nasplib.isofts.kiev.ua/handle/123456789/80052
• Journal Title: Digital Library of Periodicals of National Academy of Sciences of Ukraine
• Cite this: Collective excitations and superfluid properties of a two-dimensional interacting Bose gas in an external potential / D.V. Fil, S.I. Shevchenko // Вопросы атомной науки и техники. — 2001. — № 6. — С. 365-369. — Бібліогр.: 15 назв. — англ.

We develop an approach for a description of collective excitations in a two-dimensional gas of interacting Bose particles in an external potential. We present a method of finding an approximate analytical solution for the spectra of collective excitations of a Bose gas in a linear potential and in a...