137 citations · 380 across the 17 of their papers we have counts for
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gr-qc2001★ 36 cited
No time machines in classical general relativity
S. Krasnikov
Irrespective of local conditions imposed on the metric, any extendible spacetime U has a maximal extension containing no closed causal curves outside the chronological past of U. W…
gr-qc2001★ 39 cited
The time travel paradox
S. Krasnikov
We define the time travel paradox in physical terms and prove its existence by constructing an explicit example. We argue further that in theories -- such as general relativity --…