Physics Frontiers

Gravitational Alternatives to Dark Energy

May 16, 2018 · 46 min · 33.8 MB
0:00-46:56

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Jim and Randy discuss how modifications to general relativity can be used to mimic the effects of dark energy. They discuss various forms of gravitational theory that can do the job, as well as the field particles that mediate their "fifth force."

Show Notes: http://frontiers.physicsfm.com/29