Physics Frontiers

f(R) Theories of Gravity

Jun 2, 2017 · 37 min · 26.9 MB
0:00-37:20

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Jim and Randy discuss gravitational theories that modify general relativity by changing the action using a polynomial dependence on the Ricci scalar. Although not physically motivated, some of these theories produce effects similar to those of dark matter, dark energy, and cosmological constants.

Show notes: http://frontiers.physicsfm.com/9