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  Bose-Einstein-like Condensation due to Diffusivity Edge under Periodic Confinement

Mahault, B., & Golestanian, R. (2020). Bose-Einstein-like Condensation due to Diffusivity Edge under Periodic Confinement. New Journal of Physics, 22(6): 063045. doi:10.1088/1367-2630/ab90d8.

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Item Permalink: http://hdl.handle.net/21.11116/0000-0006-9D5B-4 Version Permalink: http://hdl.handle.net/21.11116/0000-0006-9D5C-3
Genre: Journal Article

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 Creators:
Mahault, Benoit1, Author              
Golestanian, Ramin1, Author              
Affiliations:
1Department of Living Matter Physics, Max Planck Institute for Dynamics and Self-Organization, Max Planck Society, ou_2570692              

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 Abstract: A generic class of scalar active matter, characterized at the mean field level by the diffusivity vanishing above some threshold density, was recently introduced [Golestanian R 2019 Phys. Rev. E 100 010601(R)]. In the presence of harmonic confinement, such 'diffusivity edge' was shown to lead to condensation in the ground state, with the associated transition exhibiting formal similarities with Bose–Einstein condensation (BEC). In this work, the effect of a diffusivity edge is addressed in a periodic potential in arbitrary dimensions, where the system exhibits coexistence between many condensates. Using a generalized thermodynamic description of the system, it is found that the overall phenomenology of BEC holds even for finite energy barriers separating each neighbouring pair of condensates. Shallow potentials are shown to quantitatively affect the transition, and introduce non-universality in the values of the scaling exponents.

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Language(s): eng - English
 Dates: 2020-06-22
 Publication Status: Published online
 Pages: -
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 Table of Contents: -
 Rev. Method: Peer
 Identifiers: DOI: 10.1088/1367-2630/ab90d8
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Title: New Journal of Physics
Source Genre: Journal
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Pages: 10 Volume / Issue: 22 (6) Sequence Number: 063045 Start / End Page: - Identifier: ISSN: 1367-2630