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

It has recently been suggested that black hole remnants of primordial originare not a viable dark matter candidate since they would have far too large avelocity due to the recoil of Hawking radiation. We re-examined thisinteresting claim in more details and found that it does not rule out such apossibility. On the contrary, for models based on non-commutativity ofspacetime near the Planck scale, essentially the same argument can be used toestimate the scale at which non-commutativity effect becomes important. If darkmatter "particles" are non-commutative black holes that have passed the maximumtemperature, this implies that the non-commutative scale is about 100 times thePlanck length. The same analysis applies to other black hole remnants whosetemperature reaches a maximum before cooling off, for example, black holes inasymptotically safe gravity.

Feasibility of Primordial Black Hole Remnants as Dark Matter in View of Hawking Radiation Recoil