3 papers
gr-qc2026
Defrosting the Born-Infeld dyonic frozen star with tachyon matter: spectrum of oscillations
Ram Brustein, A. J. M. Medved, Tamar Simhon
The frozen star is a model for the interior of an astrophysical black hole that is externally indistinguishable from the singular geometry of a Schwarzschild black hole, even thoug…
gr-qc2025
Formation of Frozen Stars from collapsing matter by tunneling
Ram Brustein, A. J. M. Medved, Tamar Simhon
The frozen star is a type of black hole mimicker: An ultracompact object whose exterior geometry resembles that of a general-relativistic black hole but differs in its matter compo…
hep-th2024
Kerr Black hole mimickers sourced by a string fluid
Ram Brustein, A. J. M. Medved, Tamar Simhon
We present rotating solutions of Einstein's gravity coupled to an effective Born-Infeld theory that describes the end of open-string tachyon condensation after the decay of an unst…