MG 13 · 2012
Isaak Markovich Khalatnikov
Isaak Khalatnikov was a theoretical physicist known for superfluidity, the Landau school, and the BKL singularity.
1919, Dnipro, Ukraine
Landau Institute for Theoretical Physics, Chernogolovka, Russia
“For the discovery of a general solution of the Einstein equations with a cosmological singularity of an oscillatory chaotic character known as the BKL singularity.”
MG XIII, Stockholm, Sweden

Work
Understanding singularities is essential for connecting relativistic cosmology with the limits of classical gravity.
Khalatnikov, with Belinski and Lifshitz, described the oscillatory dynamics of generic spacetime collapse near a singularity.
Their BKL analysis remains one of the most influential frameworks for studying the structure of the early universe.