Matter-antimatter basis for dark energy

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SUMMARY

The discussion centers on the hypothesis that dark energy may originate from a long-range repulsion between primordial matter and antimatter, referred to as "cosmon." Participants debate the gravitational attraction between matter and antimatter, asserting that current understanding confirms this attraction rather than repulsion. The conversation highlights the lack of experimental verification for these theories, particularly regarding the behavior of particles such as positrons and anti-protons in accelerators.

PREREQUISITES
  • Understanding of gravitational forces between matter and antimatter
  • Familiarity with the Hubble law and redshift measurements
  • Knowledge of particle physics, specifically positrons and anti-protons
  • Basic concepts of dark energy and cosmology
NEXT STEPS
  • Research the implications of the Hubble law on cosmic expansion
  • Study the behavior of anti-protons in particle accelerators
  • Explore the concept of dark energy and its relation to cosmological models
  • Investigate experimental methods for detecting antimatter in the universe
USEFUL FOR

Astronomers, physicists, and cosmologists interested in the fundamental forces of the universe and the nature of dark energy.

Loren Booda
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Could the impetus for the ever-expanding universe lie in an exotic, long range repulsion between primordial matter and antimatter (as in the term cosmon)? If so, it might be possible to calculate the abundance of antimatter at a given distance and direction by variations in redshift from the Hubble law.
 
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Force between matter and antimatter is normal gravitational attraction, not repulsion.
 
mathman said:
Force between matter and antimatter is normal gravitational attraction, not repulsion.
How do you know that for sure to be true? :confused:

As far as I know we have no experimental verification for that. Am I wrong?
 
Last edited:
MeJennifer said:
How do you know that for sure to be true? :confused:
Can we infer it from the inertial behavior of mass - e.g. of the positron and electron, which are the same in an acclerator at the same energy?

I believe that anti-protons behave the same as protons in accelerator, in terms of mass-energy relationship - as far as we can tell.
 
http://math.ucr.edu/home/baez/physics/ParticleAndNuclear/antimatterFall.html
Seems inconclusive to me.
 
Last edited by a moderator:

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