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/

Zendy Plus

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

Zendy Tools

Zendy Open

We study radiation emitted during the gravitational collapse from twodifferent types of shells. We assume that one shell is made of dark matter andis completely transparent to the test scalar (for simplicity) field whichbelongs to the standard model, while the other shell is made of the standardmodel particles and is totally reflecting to the scalar field. These two shellshave exactly the same mass, charge and angular momentum (though we set thecharge and angular momentum to zero), and therefore follow the same geodesictrajectory. However, we demonstrate that they radiate away different amount ofenergy during the collapse. This difference can in principle be used by anasymptotic observer to reconstruct the physical properties of the initialcollapsing object other than mass, charge and angular momentum. This result hasimplications for the information paradox and expands the list of the type ofinformation which can be released from a collapsing object.

Collapsing objects with the same gravitational trajectory can radiate away different amount of energy