Motion of Objects Through Dilute Bose-Einstein Condensates

Autor:	B. Jackson, T. Winiecki, M. Leadbeater, J.F. McCann, Charles S. Adams
Rok vydání:	2007
Předmět:	Condensed Matter::Quantum Gases Physics Quantum fluid Condensed Matter::Other Critical ionization velocity Vortex shedding Schrödinger equation Vortex ring Vortex law.invention Superfluidity symbols.namesake law Quantum electrodynamics symbols Bose–Einstein condensate
Zdroj:	Lecture Notes in Physics ISBN: 9783540422266
DOI:	10.1007/3-540-45542-6_30
Popis:	This paper discusses the motion of objects through quantum fluids described by the Gross Pitaevskii (GP) equation. The object moves without dissipation at velocities below a threshold which corresponds to the critical velocity for vortex nucleation. Above the critical velocity, vortex shedding is the dominant mechanism of energy transfer between the object and the fluid. We compare the predictions of the GP model with experiments on an oscillating laser beam in an alkali vapour Bose Einstein condensate and ions in superfluid helium-4.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::18763139e74bce163ddbdc65c67d0118 https://doi.org/10.1007/3-540-45542-6_30 Zobrazit plný text záznamu