Dynamic control of the Bose-Einstein-like condensation transition in scalar active matter
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- Berx_2024_New_J._Phys._26_033049
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The dynamics of a generic class of scalar active matter exhibiting a diffusivity edge is studied in a confining potential where the amplitude is governed by a time-dependent protocol. For such non-equilibrium systems, the diffusion coefficient vanishes when the single-particle density field reaches a critical threshold, inducing a condensation transition that is formally akin to Bose-Einstein condensation. We show that this transition arises even for systems that do not reach a steady state, leading to condensation in finite time. Since the transition can be induced for a fixed effective temperature by evolving the system, we effectively show that the temporal coordinate constitutes an alternative control parameter to tune the transition characteristics. For a constant-amplitude protocol, our generalised thermodynamics reduces in the steady-state limit to earlier results. Lastly, we show numerically that for periodic modulation of the potential amplitude, the condensation transition is reentrant.
Original language | English |
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Article number | 033049 |
Journal | New Journal of Physics |
Volume | 26 |
Number of pages | 14 |
ISSN | 1367-2630 |
DOIs | |
Publication status | Published - 27 Mar 2024 |
ID: 387374335