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Closed Timelike Curves in Type Ⅱ Non-Vacuum Spacetime
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作者 Faizuddin Ahmed 《Communications in Theoretical Physics》 SCIE CAS CSCD 2017年第2期189-191,共3页
Here we present a cyclicly symmetric non-vacuum spacetime, admitting closed timelike curves(CTCs) which appear after a certain instant of time,i.e.,a time-machine spacetime. The spacetime is asymptotically flat, freef... Here we present a cyclicly symmetric non-vacuum spacetime, admitting closed timelike curves(CTCs) which appear after a certain instant of time,i.e.,a time-machine spacetime. The spacetime is asymptotically flat, freefrom curvature singularities and a four-dimensional extension of the Misner space in curved spacetime. The spacetime is of type Ⅱ in the Petrov classification scheme and the matter field pure radiation satisfy the energy condition. 展开更多
关键词 closed timelike curves Misner space pure radiation
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