2 papers
gr-qc2025
Kerr black holes as circular polarizers
De-Chang Dai
We study the retrograde second caustics of extremal Kerr black holes, where the intensity of the light beam is infinitely magnified. We find that the caustics of different polarize…
gr-qc2025
Entropy created when colliding particles fall into a black hole
De-Chang Dai
If two particles collide in the vicinity of a black hole horizon, their center of mass energy is practically unlimited, so another black hole with a large mass and thus entropy can…