Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Matter-antimatter basis for dark energy

  1. Apr 1, 2007 #1
    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.
  2. jcsd
  3. Apr 1, 2007 #2


    User Avatar
    Science Advisor
    Gold Member

    Force between matter and antimatter is normal gravitational attraction, not repulsion.
  4. Apr 1, 2007 #3
    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: Apr 1, 2007
  5. Apr 1, 2007 #4


    User Avatar

    Staff: Mentor

    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.
  6. Apr 1, 2007 #5


    User Avatar
    Gold Member

    Last edited by a moderator: Apr 22, 2017 at 4:42 PM
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Similar Discussions: Matter-antimatter basis for dark energy