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 Tools annual

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 monthly

Global: Zendy Plus monthly

Presents the access of premium content as premium feature

Premium Content

Global: Zendy Plus annual

Global: Zendy Free Plan

General static solutions for a massless scalar field coupled to a class ofeffectively 2-d gravity theories continuously connecting spherically symmetric$d$-dimensional Einstein gravity ($d >3$) and the CGHS model are analyticallyobtained. They include black holes and point scalar charge solutions with nakedsingularities, and are used to give an analytic proof of no-hair theorem. Exactscattering solutions in $s$-wave 4-d Einstein gravity are constructed as ageneralization of corresponding static solutions. They show the existence ofblack hole formation threshold for square pulse type incoming stress-energyflux, above which trapped surfaces are dynamically formed. The relationshipbetween this behavior and the numerically studied phase transition in thissystem \cite{choptuik} is discussed.Comment: 30 pages, 8 uuencoded eps figure

General static solutions of a massless scalar field coupled with a class of gravity theories