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

We prepare an excited finite temperature state in ${\cal N}=4$ SYM by meansof a Euclidean path integral with a relevant deformation. The deformationexplicitly breaks imaginary-time translations along the thermal circle whilstpreserving its periodicity. We then study how the state relaxes to thermalequilibrium in real time. Computations are performed using real-time AdS/CFT,by constructing novel mixed-signature black holes in numerical relativitycorresponding to Schwinger-Keldysh boundary conditions. These correspond todeformed cigar geometries in the Euclidean, glued to a pair of dynamicalspacetimes in the Lorentzian.  The maximal extension of the Lorentzian black hole exhibits a `causalshadow', a bulk region which is spacelike separated from both boundaries. Weshow that causal shadows are generic in path-integral prepared states whereimaginary-time translations along the thermal circle are broken.

Black hole excited states from broken translations in Euclidean time