Generation of closed timelike curves with rotating superconductors

The spacetime metric around a rotating SuperConductive Ring (SCR) is deduced from the gravitomagnetic London moment in rotating superconductors. It is shown that theoretically it is possible to generate closed timelike curves (CTCs) with rotating SCRs. The possibility of using these CTCs to travel in time as initially idealized by Gödel is investigated. It is shown, however, that from a technology and experimental point of view these ideas are impossible to implement in the present context.