A 'BKL singularity' is a
non-symmetric,
chaotic,
vacuum solution to
Einstein's
field equations conjectured to represent the actual interior geometry of a "physical"
black hole formed by
gravitational collapse.
It is named after the three authors who first described it: V.A. Belinsky,
I.M. Khalatnikov and
E.M. Lifshitz.
The
Mixmaster universe is a solution to
general relativity that exhibits properties similar to those discussed by BKL.
References
★
Колебательный режим приближения к особой точке в релятивистской космологии, Belinsky V A, Khalatnikov I M, and Lifshitz E M, , , Uspekhi Fizicheskikh Nauk (Успехи Физических Наук), 1970 English translation in
Oscillatory Approach to a Singular Point in the Relativistic Cosmology, , , , Advances in Physics, 1970 .
★
Black Holes and Time Warps: Einstein's Outrageous Legacy, Thorne, K. S., , , W. W. Norton, 1994,