English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Plus monthly

Global: Zendy Tools annual

Global: Zendy Tools monthly

Global: Zendy Free Plan

The emergence of the objective classical world from the quantum behavior ofmicroscopic constituents is not fully understood. Models based on decoherenceand the principle of quantum Darwinism, which attempt to provide such anexplanation, require system-bath interactions in a preferred basis. Thus, thegeneric emergence of objectivity in the position basis, as observed in the realworld remains unexplained. In this Letter, we present a no-go theorem based onthe principle of no-faster-than-light communication, showing that interactionsbetween internal degrees of freedom unavoidably cause system wave functions tobranch in the position basis. We apply this result to a spin decoherence modelto demonstrate that a generic thermal spin-1/2 bath redundantly recordsinformation about the position of a spin-1/2 particle. Notably, the model doesnot assume any preferred spin interaction. These findings represent acompelling demonstration of the generic emergence of objectivity in theposition basis.

Quantum operations restricted by no faster-than-light communication principle and generic emergence of objectivity in position basis