The Change in the Stationary and Time-evolution Characteristics of an Atomic Bose-Einstein Condensate in a Finite Depth Trap

2009 ◽  
Vol 10 (7) ◽  
Author(s):  
P. K. Biswas ◽  
T. Frederico
Keyword(s):  
Time Evolution ◽  
Finite Depth ◽  
Einstein Condensate ◽  
Bose Einstein Condensate ◽  
Evolution Characteristics ◽  
Bose Einstein

scholarly journals Unearthing wave-function renormalization effects in the time evolution of a Bose–Einstein condensate

2013 ◽  
Vol T153 ◽  
pp. 014024
Author(s):  
Paolo Facchi ◽  
Saverio Pascazio ◽  
Francesco V Pepe ◽  
Ennio Arimondo ◽  
Donatella Ciampini ◽  
...  
Keyword(s):  
Wave Function ◽  
Time Evolution ◽  
Einstein Condensate ◽  
Wave Function Renormalization ◽  
Bose Einstein Condensate ◽  
Bose Einstein

scholarly journals Characteristic Length Scale during the Time Evolution of a Turbulent Bose–Einstein Condensate

Symmetry ◽  
2021 ◽  
Vol 13 (10) ◽  
pp. 1865
Author(s):  
Lucas Madeira ◽  
Arnol D. García-Orozco ◽  
Michelle A. Moreno-Armijos ◽  
Francisco Ednilson Alves dos dos Santos ◽  
Vanderlei S. Bagnato
Keyword(s):  
Time Evolution ◽  
Quantum Turbulence ◽  
Characteristic Length ◽  
Three Dimensional ◽  
Einstein Condensate ◽  
Length Scale ◽  
Characteristic Length Scale ◽  
Bose Einstein Condensate ◽  
Momentum Distributions ◽  
Bose Einstein

Quantum turbulence is characterized by many degrees of freedom interacting non-linearly to produce disordered states, both in space and in time. In this work, we investigate the decaying regime of quantum turbulence in a trapped Bose–Einstein condensate. We present an alternative way of exploring this phenomenon by defining and computing a characteristic length scale, which possesses relevant characteristics to study the establishment of the quantum turbulent regime. We reconstruct the three-dimensional momentum distributions with the inverse Abel transform, as we have done successfully in other works. We present our analysis with both the two- and three-dimensional momentum distributions, discussing their similarities and differences. We argue that the characteristic length allows us to intuitively visualize the time evolution of the turbulent state.

scholarly journals Transport of a Single Cold Ion Immersed in a Bose-Einstein Condensate

2021 ◽  
Vol 126 (3) ◽  
Author(s):  
T. Dieterle ◽  
M. Berngruber ◽  
C. Hölzl ◽  
R. Löw ◽  
K. Jachymski ◽  
...  
Keyword(s):  
Einstein Condensate ◽  
Bose Einstein Condensate ◽  
Bose Einstein

scholarly journals Ultrafast electron cooling in an expanding ultracold plasma

2021 ◽  
Vol 12 (1) ◽  
Author(s):  
Tobias Kroker ◽  
Mario Großmann ◽  
Klaus Sengstock ◽  
Markus Drescher ◽  
Philipp Wessels-Staarmann ◽  
...  
Keyword(s):  
Theoretical Models ◽  
Einstein Condensate ◽  
Direct Access ◽  
Electron Cooling ◽  
Plasma Dynamics ◽  
Strongly Coupled ◽  
Bose Einstein Condensate ◽  
Ultracold Plasma ◽  
Strongly Coupled Plasma ◽  
Bose Einstein

AbstractPlasma dynamics critically depends on density and temperature, thus well-controlled experimental realizations are essential benchmarks for theoretical models. The formation of an ultracold plasma can be triggered by ionizing a tunable number of atoms in a micrometer-sized volume of a 87Rb Bose-Einstein condensate (BEC) by a single femtosecond laser pulse. The large density combined with the low temperature of the BEC give rise to an initially strongly coupled plasma in a so far unexplored regime bridging ultracold neutral plasma and ionized nanoclusters. Here, we report on ultrafast cooling of electrons, trapped on orbital trajectories in the long-range Coulomb potential of the dense ionic core, with a cooling rate of 400 K ps−1. Furthermore, our experimental setup grants direct access to the electron temperature that relaxes from 5250 K to below 10 K in less than 500 ns.

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