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

We start from $(3 + 1)$-dimensional Einstein gravity with minimally coupledmassless scalar matter, through spherical dimensional reduction, the mattertheory is non-minimally coupled with the dilaton in $(1 + 1)$-dimensions.Despite its simplicity, constructing a self-consistent one-loop effectivetheory for this model remains a challenge, partially due to a Weyl-invariantambiguity in the effective action. With a universal splitting property for theone-loop action, the ambiguity can be identified with the state-dependent partof the covariant quantum stress tensor. By introducing on-shell equivalentauxiliary fields to construct minimal candidates of Weyl-invariant terms, wederive a one-parameter family of one-loop actions with unique, regular, andphysical stress tensors corresponding to the Boulware, Hartle-Hawking and Unruhstates. We further study the back-reacted geometry and the correspondingquantum extremal islands that were inaccessible without a consistent one-looptheory. Along the way, we elaborate on the implications of our construction forthe non-minimal dilaton gravity model.

Islands in Non-Minimal Dilaton Gravity: Exploring Effective Theories for Black Hole Evaporation