000			01336 a2200229 4500
005			20190806111050.0
008			190805b xxu||||| |||| 00| 0 eng d
020			_a9783319727530
040			_cIIT Kanpur
041			_aeng
082			_a530.01 _bK864b
100			_aKrasnikov, Serguei
245			_aBack in time and faster than light travel in general relativity _cSerguei Krasnikov
260			_bSpringer _c2018 _aSwitzerland
300			_axviii, 250p
440			_aFundamental theories of physics
490			_a/ edited by Henk van Beijeren; v.193
520			_aFor the past 20 years causality violations and superluminal motion have been the object of intensive study as physical and geometrical phenomena. This book compiles the results of its author and also reviews other work in the field. In particular, the following popular questions are addressed: Is causality protected by quantum divergence at the relevant Cauchy horizon? How much "exotic matter" would it take to create a time machine or a warp drive? What is the difference between a "discovered" time machine and a created one? Why does a time traveler fail to kill their grandfather? How should we define the speed of gravity and what is its magnitude?
650			_aSpace and time
650			_aTime travel
942			_cBK
999			_c560642 _d560642