Metastable States and Macroscopic Quantum Tunneling in a Cold-Atom Josephson Ring

We study macroscopic properties of a system of weakly interacting neutral bosons confined in a ring-shaped potential with a Josephson junction. We derive an effective low energy action for this system and evaluate its properties. In particular, we find that the system possesses a set of metastable c...

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Bibliographic Details
Published in:Physical review letters 2010-04, Vol.104 (15), p.150405, Article 150405
Main Authors: Solenov, Dmitry, Mozyrsky, Dmitry
Format: Article
Language:English
Subjects:
ATOMS
BOSONS
CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS
CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY
CURRENTS
ENERGY LEVELS
EXCITED STATES
JOSEPHSON JUNCTIONS
METASTABLE STATES
POTENTIALS
SUPERCONDUCTING JUNCTIONS
TIME-OF-FLIGHT METHOD
TUNNEL EFFECT
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