scholarly journals Mechanical Resonances of Mobile Impurities in a One-Dimensional Quantum Fluid

2019 ◽  
Vol 123 (7) ◽  
Author(s):  
Thomas L. Schmidt ◽  
Giacomo Dolcetto ◽  
Christopher J. Pedder ◽  
Karyn Le Hur ◽  
Peter P. Orth
Keyword(s):  
One Dimensional ◽  
Quantum Fluid ◽  
Mechanical Resonances

scholarly journals Do we need a non-perturbative theory of Bose-Einstein condensation?

2021 ◽  
Vol 2103 (1) ◽  
pp. 012200
Author(s):  
K G Zloshchastiev
Keyword(s):  
Phase Contrast ◽  
Einstein Condensate ◽  
Einstein Condensation ◽  
One Dimensional ◽  
Quantum Fluid ◽  
Bose Einstein Condensate ◽  
Dipole Force ◽  
Theoretical Assumptions ◽  
Bose Einstein ◽  
Best Fit

Abstract We recall the experimental data of one-dimensional axial propagation of sound near the center of the Bose-Einstein condensate cloud, which used the optical dipole force method of a focused laser beam and rapid sequencing of nondestructive phase-contrast images. We reanalyze these data within the general quantum fluid framework but without model-specific theoretical assumptions; using the standard best fit techniques. We demonstrate that some of their features cannot be explained by means of the perturbative two-body approximation and Gross-Pitaevskii model, and conjecture possible solutions.

Mo6S3I6 molecular wires: From a one-dimensional quantum fluid to self-organized critical self-assembled networks

2010 ◽  
Vol 247 (11-12) ◽  
pp. 3014-3017
Author(s):  
Christoph Gadermaier ◽  
Jure Strle ◽  
Marko Uplaznik ◽  
Damjan Vengust ◽  
Bostjan Bercic ◽  
...  
Keyword(s):  
Molecular Wires ◽  
One Dimensional ◽  
Quantum Fluid ◽  
Self Organized ◽  
Self Assembled

scholarly journals Velocity operator approach to quantum fluid dynamics in a three-dimensional neutron–proton system

2016 ◽  
Vol 25 (08) ◽  
pp. 1650057 ◽  
Author(s):  
Seiya Nishiyama ◽  
João da Providência
Keyword(s):  
Three Dimensional ◽  
Momentum Density ◽  
Collective Variables ◽  
Operator Approach ◽  
One Dimensional ◽  
Quantum Fluid ◽  
Density Operators ◽  
Fluid Velocities ◽  
Collective Hamiltonian ◽  
Quantum Fluid Dynamics

In the preceeding paper, introducing [Formula: see text]-dependent density operators and defining exact momenta (collective variables), we could get an exact canonically momenta approach to a one-dimensional (1D) neutron–proton (NP) system. In this paper, we attempt at a velocity operator approach to a 3D NP system. Following Sunakawa, after introducing momentum density operators, we define velocity operators, denoting classical fluid velocities. We derive a collective Hamiltonian in terms of the collective variables.

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