3 papers
cond-mat.quant-gas2018
Macroscopic quantum escape of Bose-Einstein condensates: Analysis of experimentally realizable quasi-one-dimensional traps
Diego A. Alcala, Gregor Urban, Matthias Weidemüller +1
The variational-JWKB method is used to determine experimentally accessible macroscopic quantum tunneling regimes of quasi-bound Bose-Einstein condensates in two quasi one-dimension…
cond-mat.quant-gas2018
For high-precision bosonic Josephson junctions, many-body effects matter
Marie A. McLain, Diego A. Alcala, Lincoln D. Carr
Typical treatments of superconducting or superfluid Josephson junctions rely on mean-field or two-mode models; we explore many-body dynamics of an isolated, ultracold, Bose-gas lon…
cond-mat.quant-gas2017
Macroscopic Quantum Tunneling Escape of Bose-Einstein Condensates
Xinxin Zhao, Diego A. Alcala, Marie A. McLain +5
Recent experiments on macroscopic quantum tunneling reveal a non-exponential decay of the number of atoms trapped in a quasibound state behind a potential barrier. Through both exp…