Entropy-Clock: Time Emerges from a Lab-Ccreated Mini‑Universe
A University of Birmingham team used a Bose‑Einstein condensate split into two halves to emulate a universe with no external clock. By letting entropy flow between the halves, they defined an internal clock—entropic time—that ordered events in the bright sector and could run faster, slower, or stop altogether as entropy exchange varied. The researchers also derived a Schrödinger equation using this internal time, supporting the idea that time and its arrow may emerge from internal relations and observer ignorance rather than an external time parameter.
