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Recorded: 3/28/2018 Released: 8/10/2018
Jim and Randy discuss what happens when CPT symmetry is applied to gravitation. CPT symmetry -- what happens to a theory when you reverse the sign of the charge, the handedness of a particle, and the direction of time evolution all at the same time -- is a basic tenet of the standard model. Massimo Villata has applied this symmetry to gravitation and has derived consequences for the way in which antimatter particles interact with gravity and various cosmological conclusions that follow from that.
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Notes:
1. The papers we read for this program:
- Villata, M., "CPT Symmetry and Antimatter Gravity in General Relativity" EPL 94, 20001 (2011). [arXiv]
- Villata, M., "Dark Energy in the Local Void" Astrophys Space Sci 339, 7 (2012). [arXiv]
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