Dynamic control of the Bose-Einstein-like condensation transition in scalar active matter
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Dynamic control of the Bose-Einstein-like condensation transition in scalar active matter. / Berx, Jonas.
In: New Journal of Physics, Vol. 26, 033049, 27.03.2024.Research output: Contribution to journal › Journal article › Research › peer-review
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TY - JOUR
T1 - Dynamic control of the Bose-Einstein-like condensation transition in scalar active matter
AU - Berx, Jonas
PY - 2024/3/27
Y1 - 2024/3/27
N2 - 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.
AB - 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.
U2 - 10.1088/1367-2630/ad34f3
DO - 10.1088/1367-2630/ad34f3
M3 - Journal article
VL - 26
JO - New Journal of Physics
JF - New Journal of Physics
SN - 1367-2630
M1 - 033049
ER -
ID: 387374335