137 citations · 380 across the 17 of their papers we have counts for
18 papers
Comment on "Observing a wormhole"
S. Krasnikov
In their recent paper Dai and Stojkovic [arXiv:1910.00429] discuss an interesting possibility: a star near a wormhole mouth may gravitationally feel an object located near the othe…
No to censorship! Comment on the Friedman-Schleich-Witt theorem
S. Krasnikov
I show that there is a significant lacuna in the proof of the theorem known as "Topological Censorship" (a theorem forbidding a solution of Einstein's equations to have some topolo…
Quasiregular singularities taken seriously
Serguei Krasnikov
I discuss a special class of singularities obtained as a natural 4-dimensional generalization of the conical singularity. Such singularities (called quasiregular) are ruinous for t…
Gravitational strings. Do we see one?
S. V. Krasnikov
I present a class of objects called gravitational strings (GS) for their similarity to the conventional cosmic strings: even though the former are just singularities in flat spacet…
Electrostatic interaction of a pointlike charge with a wormhole
S. Krasnikov
A pointlike electric charge at rest is considered in the spacetime which is a wormhole connecting two otherwise Minkowskian spaces. The potential (i. e. a solution of the Maxwell e…
Evaporation induced traversability of the Einstein--Rosen wormhole
S. Krasnikov
Suppose, the Universe comes into existence (as classical spacetime) already with an empty spherically symmetric macroscopic wormhole present in it. Classically the wormhole would e…