CERN Accelerating science

Article
Report number arXiv:2409.16512
Title Simulated optical molasses cooling of trapped antihydrogen
Author(s) Walsh, Spencer J. (Purdue U.) ; Rasmussen, C.Ø. (CERN) ; Robicheaux, F. (Purdue U.)
Publication 2025-02-07
Imprint 2024-09-24
Number of pages 8
In: J. Phys. B 58 (2025) 045202
DOI 10.1088/1361-6455/adaf88 (publication)
Subject category physics.atom-ph ; Other Fields of Physics
Accelerator/Facility, Experiment ALPHA
Abstract We theoretically and computationally investigate the cooling of antihydrogen, $\bar{H}$, using optical molasses cooling. This updates the results in Ref. [1] to the current capabilities of the ALPHA experiment. Through Monte Carlo simulation, we show that $\bar{H}$s do not give the standard cooling even in an ideal optical molasses because of their small mass and large transition frequency. For optical molasses cooling in the ALPHA trap, the photons are constrained to travel in one direction only. It is only through the phase space mixing in the trap that cooling in all directions can be achieved. We explore the nontrivial role that laser intensity plays in the cooling. We also investigate the possibility for simultaneously cooling atoms in either of the trapped ground states.
Copyright/License preprint: (License: arXiv nonexclusive-distrib 1.0)
publication: © 2025 The Author(s) (License: CC-BY-4.0)



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