Friday, May 3, 2019

Entropic Gravity

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Recorded: 4/4/2019 Released: 5/3/2019

Randy and Jim discuss Eric Verlinde's theory of emergent gravity that relies on statistical methods to produce both gravitational attraction and inertial effects.
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Notes:

1. The papers we read for this program:

2. Additional related paper I half-read and we discussed:
3. Related Episodes of Physics Frontiers:



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1 comment:

  1. Really enjoyed listening to this and I learned a lot about the nature of the entropic gravity claim. I wanted ask for your thoughts on a couple of recent news items I've seen that might relate to entropic gravity. First, there have been two reports of galaxies that seem to have no evidence of dark matter -- i.e. the outer bits orbital velocities are consistent with the visible matter. If I read the reports correctly, they're both unusually diffuse galaxies, but either way, this would be a challenge to entropic gravity as it should emerge from from every galaxy. Second, your episode on negative mass/gravitational force at quantum scales would also present a challenge for entropic gravity, since it shouldn't be able to be seen except when lots of quantum particles are bouncing around (i.e. Boyle's law has no definition around a single atom).

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