Controlling the atom-sphere interaction with an external electric field
- URL: http://arxiv.org/abs/2107.04456v2
- Date: Wed, 25 Aug 2021 13:12:17 GMT
- Title: Controlling the atom-sphere interaction with an external electric field
- Authors: P. P. Abrantes, V. Pessanha, Reinaldo de Melo e Souza, C. Farina
- Abstract summary: We investigate the system constituted by a polarizable atom near a nanosphere under the influence of an external electrostatic field.
In addition to the advantageous possibility of actively tuning the resultant force with an external agent without the requirement of physical contact, this force may also become repulsive.
- Score: 0.0
- License: http://creativecommons.org/licenses/by/4.0/
- Abstract: We investigate the system constituted by a polarizable atom near a nanosphere
under the influence of an external electrostatic field, showing that the
attractive dispersive force between them can be overcome by the electrostatic
interaction. Therefore, in addition to the advantageous possibility of actively
tuning the resultant force with an external agent without the requirement of
physical contact, this force may also become repulsive. We analyze this
situation in different physical regimes of distance and explore the interaction
of different atoms with both metallic and dielectric spheres, discussing which
cases are easier to control. Furthermore, our results reveal that these
repulsive forces can be achieved with feasible field intensities in the
laboratory.
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