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cond-mat.quant-gas2025
A canonical approach to quantum fluctuations
Joanna Ruhl, Vanja Dunjko, Maxim Olshanii
We present a canonical formalism for computing quantum fluctuations of certain discrete degrees of freedom in systems governed by integrable partial differential equations with kno…
cond-mat.quant-gas2017★ 6 cited
Metastability versus collapse following a quench in attractive Bose-Einstein condensates
Jake Golde, Joanna Ruhl, Sumita Datta +3
We consider a Bose-Einstein condensate (BEC) with attractive two-body interactions in a cigar-shaped trap, initially prepared in its ground state for a given negative scattering le…
cond-mat.quant-gas2015
Three-dimensional Gross-Pitaevskii solitary waves in optical lattices: stabilization using the artificial quartic kinetic energy induced by lattice shaking
M. Olshanii, S. Choi, V. Dunjko +4
In this Letter, we show that a three-dimensional Bose-Einstein solitary wave can become stable if the dispersion law is changed from quadratic to quartic. We suggest a way to reali…