Classical records and Bell correlations in a dynamically formed quantum body

Abstract

Competing quantum contacts can create a boundary that was absent from the specification of a subsystem. We construct approximately isolated bodies from bare field vacuum and zero-centred contact packets. A binding contribution with vanishing mean energy density nevertheless changes a bounded formation signal by order one at the same clock. On the formed material spins and their original memories, coarse collective records precede an all-outcome Bell violation. The field evolves dynamically, with the finite bath, residual boundary interaction, failed records and preparation costs retained. The result connects dynamical subsystem formation, classical collective records and microscopic nonlocality, with polynomial resources in the stated preparation and measurement class.