Relaxation Shortcuts through Boundary Coupling.

Autor: Teza G; Department of Physics of Complex Systems, Weizmann Institute of Science, Rehovot 7610001, Israel., Yaacoby R; Department of Physics of Complex Systems, Weizmann Institute of Science, Rehovot 7610001, Israel., Raz O; Department of Physics of Complex Systems, Weizmann Institute of Science, Rehovot 7610001, Israel.
Jazyk: angličtina
Zdroj: Physical review letters [Phys Rev Lett] 2023 Jul 07; Vol. 131 (1), pp. 017101.
DOI: 10.1103/PhysRevLett.131.017101
Abstrakt: When a hot system cools down faster than an equivalent cold one, it exhibits the Mpemba effect (ME). This counterintuitive phenomenon was observed in several systems including water, magnetic alloys, and polymers. In most experiments the system is coupled to the bath through its boundaries, but all theories so far assumed bulk coupling. Here we build a general framework to characterize anomalous relaxations through boundary coupling, and present two emblematic setups: a diffusing particle and an Ising antiferromagnet. In the latter, we show that the ME can survive even arbitrarily weak couplings.
Databáze: MEDLINE