A new ghost-free Born-Infeld-type f(R, G) gravity is built that admits a large family of bouncing cosmologies with varied asymptotic behaviors.
Born regulated gravity in four-dimensions
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abstract
Previous work involving Born-regulated gravity theories in two dimensions is extended to four dimensions. The action we consider has two dimensionful parameters. Black hole solutions are studied for typical values of these parameters. For masses above a critical value determined in terms of these parameters, the event horizon persists. For masses below this critical value, the event horizon disappears, leaving a ``bare mass'', though of course no singularity.
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Born-Infeld electrogravity yields a fundamental extremal dyonic black hole in the small-charge limit whose mass and horizon area depend only on the Born-Infeld constant, Newton’s constant, and the speed of light.
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Bouncing cosmologies from Born-Infeld-type gravity
A new ghost-free Born-Infeld-type f(R, G) gravity is built that admits a large family of bouncing cosmologies with varied asymptotic behaviors.
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Born-Infeld Electrogravity and Dyonic Black Holes
Born-Infeld electrogravity yields a fundamental extremal dyonic black hole in the small-charge limit whose mass and horizon area depend only on the Born-Infeld constant, Newton’s constant, and the speed of light.