The forces and Penrose process in Friedman spacetime
نویسندگان
چکیده
In this paper, we compare the force expressions in both comoving synchronous and Ellis coordinate systems Friedman-Robertson-Walker spacetime order to understand how transformation affects inertial forces. We also studied negative energy problem system. The Penrose process is possible outside apparent horizon due fact that line element has off-diagonal term. However, only movement towards infinity possible; offer way one can ascertain effect took place horizon.
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ژورنال
عنوان ژورنال: Physics of complex systems
سال: 2021
ISSN: ['2687-153X']
DOI: https://doi.org/10.33910/2687-153x-2021-2-2-81-86