18 citations · 68 across the 12 of their papers we have counts for
12 papers
A causality preserving evolution of a pair of strings
Serguei Krasnikov
As shown by Gott, a pair of straight cosmic strings moving in opposite directions, when they have suitable speed and impact parameter, produce closed timelike curves. I argue in th…
Schwarzschild-Like Wormholes as Accelerators
S. Krasnikov
In a stationary spacetime consider a pair of free falling particles that collide with the energy (as measured in the center-of-mass system). Let the metric of $S…
Is the Kerr black hole a super accelerator?
S. Krasnikov, M. V. Skvortsova
A number of long-standing puzzles, such as the origin of ultrahigh-energy cosmic rays, could perhaps be solved if we found a mechanism for effectively transferring energy from blac…
Finite energy quantization on a topology changing spacetime
S. Krasnikov
The "trousers" spacetime is a pair of flat 2D cylinders ("legs") merging into into a single one ("trunk"). In spite of its simplicity this spacetime has a few features (including,…
What is faster -- light or gravity?
S. Krasnikov
General relativity lacks the notion of the speed of gravity. This is inconvenient and the present paper is aimed at filling this gap up. To that end I introduce the concept of the…
Yet another proof of Hawking and Ellis's Lemma 8.5.5
S. Krasnikov
The fact that the null generators of a future Cauchy horizon are past complete was proved first by Hawking and Ellis [1]. Then Budzyński, Kondracki, and Królak outlined a proof fre…