Stability and Metastability of Trapless Bose-Einstein Condensates and Quantum Liquids
Stability and Metastability of Trapless Bose-Einstein Condensates and Quantum Liquids
Various kinds of Bose-Einstein condensates are considered, which evolve without any geometric constraints or external trap potentials including gravitational. For studies of their collective oscillations and stability, including the metastability and macroscopic tunneling phenomena, both the variational approach and the Vakhitov-Kolokolov criterion are employed, calculations are done for condensates of …