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 Unruh effect is the phenomenon that accelerated observers detectparticles even when inertial observers experience the vacuum state. Inparticular, uniformly accelerated observers are predicted to measure thermalradiation that is proportional to the acceleration. Here we consider the Unruheffect for a detector that follows a quantum superposition of differentaccelerated trajectories in Minkowski spacetime. More precisely, we analyse theexcitations of a pointlike multilevel particle detector coupled to a masslessreal scalar field and moving in the superposition of accelerated trajectories.We find that the state of the detector excitations is, in general, not a mere(convex) mixture of the thermal spectrum characteristics of the Unruh effectfor each trajectory with well-defined acceleration separately. Rather, forcertain trajectories and excitation levels, and upon the measurement of thetrajectory state, the state of the detector excitations features in additionoff-diagonal terms. The off-diagonal terms of these "superpositions of thermalstates" are related to the distinguishability of the different possible statesin which the field is left after its interaction with detector's internaldegrees of the freedom.

Unruh effect for detectors in superposition of accelerations