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

What were the initial ingredients of the BB

  1. Aug 24, 2013 #1
    I have read the time line several times for the BB:


    And I am unclear what were the initial ingredients at or before the 10-43 seconds. All I can get from this is high temperature which means high energy or high vibrational energy in matter.
    Were there any forms of matter at this stage? e.g. free quarks, leptons and bosons?

    So all I can see for the initial ingredients are:

    1. Inflation which seems to greatly increase the size of the Universe. Is it correct to say it created spacetime?

    2. Energy. I am not sure what this form of energy is eg. vibrational or radiation?

    3. Elementary particles? http://en.wikipedia.org/wiki/Elementary_particle
  2. jcsd
  3. Aug 24, 2013 #2


    User Avatar
    Staff Emeritus
    Science Advisor

    To quote wiki:

    As for your specific points:

    1. No, inflation just made the universe expand very very very rapidly. It did not create spacetime.

    2. Energy probably existed in the form of VERY high energy EM radiation and VERY high kinetic energy of elementary particles.

    3. If we assume that SOMETHING existed at that point in time, then I'd guess that it would be elementary particles. But given the extreme energy they may be particles that we've never seen before or they may behave in very different ways than we observe today.
  4. Aug 24, 2013 #3


    User Avatar
    Science Advisor
    Gold Member

    We have nothing but guesses about what the universe was like before planck time. It may have been pure energy with mass possessing particles emerging later - possibly condensing during the inflationary epoch.
  5. Aug 24, 2013 #4


    User Avatar
    Staff Emeritus
    Science Advisor

    And what is "pure energy"?
  6. Aug 24, 2013 #5
    Yes that is the essence of my question, what is the speculated form of this energy before 10-43 secs? Perhaps High kinetic energy of elementary particles and radiation or is that later on?
    Last edited: Aug 24, 2013
  7. Aug 25, 2013 #6


    User Avatar
    Science Advisor
    Gold Member

    The only suspect is the inflaton at this point.
  8. Aug 26, 2013 #7
    Perhaps what constituted a pre-planck time universe is similar to an Einstien-Bose condensate (in reverse) and was composed of one single high energy string that "broke" up with the expansion/inflation to create the first photons and quarks?
    It will be interesting to see in the future how such high energy and pressure affect matter.
  9. Aug 27, 2013 #8
    gp, An interesting idea. I have also wondered if the BB being could be as a result of something similar to nuclear decay. ie something that was one thing becoming many much smaller things.
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Similar Discussions: What were the initial ingredients of the BB
  1. HUP and BB (Replies: 17)

  2. Before the BB (Replies: 12)