scholarly journals Quantum simulation of traversable wormhole spacetimes in a Bose-Einstein condensate

2018 ◽  
Vol 97 (4) ◽  
Author(s):  
Jesús Mateos ◽  
Carlos Sabín
Keyword(s):  
Quantum Simulation ◽  
Einstein Condensate ◽  
Traversable Wormhole ◽  
Bose Einstein Condensate ◽  
Bose Einstein

Quantum simulation of the Unruh effect with a Rydberg-dressed Bose-Einstein condensate

2021 ◽  
Vol 103 (1) ◽  
Author(s):  
Tianze Sheng ◽  
Jun Qian ◽  
Xiaolin Li ◽  
Yueping Niu ◽  
Shangqing Gong
Keyword(s):  
Quantum Simulation ◽  
Einstein Condensate ◽  
Unruh Effect ◽  
Bose Einstein Condensate ◽  
Bose Einstein

scholarly journals Josephson junction formed in the wormhole space-time from the analysis of the critical temperature of BEC

2021 ◽  
Vol 81 (12) ◽  
Author(s):  
Shingo Takeuchi
Keyword(s):  
Critical Temperature ◽  
Josephson Junction ◽  
Space Time ◽  
Einstein Condensate ◽  
Exotic Matter ◽  
Traversable Wormhole ◽  
Bose Einstein Condensate ◽  
Bose Einstein

AbstractIn this study, we consider a gas in the Morris–Thorne traversable wormhole space-time, and analyze the critical temperature of the Bose-Einstein condensate in the vicinity of its throat. Our results show that it is equal to zero. Then, from this result, we point out that a state analogous to the Josephson junction is always formed at any temperature in the vicinity of its throat. This is of interest as a gravitational phenomenology. Of course, there is the problem of the exotic matter, but we perform this work without treating it.

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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