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 Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

The possibility of a superradiant phase transition in light-matter systems isthe subject of much debate, due to numerous apparently conflicting no-go andcounter no-go theorems. Using an arbitrary gauge approach we show that a uniquephase transition does occur in archetypal many-dipole cavity QED systems, andthat it manifests unambiguously via a macroscopic gauge-invariant polarisation.We find that the gauge choice controls the extent to which this polarisation isincluded as part of the radiative quantum subsystem and thereby determines thedegree to which the abnormal phase is classed as superradiant. This resolvesthe long-standing paradox of no-go and counter no-go theorems forsuperradiance, which are shown to refer to different definitions of radiation.

Uniqueness of the Phase Transition in Many-Dipole Cavity Quantum Electrodynamical Systems