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Abstract: The basic principles of General Theory of Relativity historically have beentested in gedanken experiments in rotating frame of references. One of the keyissues, which still evokes a lot of controversy, is the centrifugalacceleration. Machabeli and Rogava 1994 argued that centrifugal accelerationreverse direction for particles moving radially with relativistic velocitieswithin a -bead on a wire- approximation. We show that this result isframe-dependent and reflects a special relativistic dilution of time ascorrectly argued by de Felice 1995 and is analogous to freezing of motion onthe black hole horizon as seen by a remote observer. It is a reversal ofcoordinate acceleration; there is no such effect as measured by a defined setof observers, e.g., proper and-or comoving. Frame-independent velocity of a-bead- with respect to stationary rotating observers increases and formallyreaches the speed of light on the light cylinder. In general relativity,centrifugal force does reverse its direction at photon circular orbit, r=3M inSchwarzschild metric, as argued by Abramowicz 1990.



Autor: Maxim Lyutikov Purdue

Fuente: https://arxiv.org/



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