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

Oscillating universe and harmonic oscillator

  1. Jun 11, 2004 #1
    If the universe oscillates between a Big Bang and a Big crunch,
    can two particles at opposite ends of it, be considered to be
    undergoing simple harmonic oscillation?
    If the potential energy of the oscillator is given by G m1 m2 /r and
    m1 is the mass of the universe,10^52 kg,r = 10^26 metres - the current
    size of the universe -then since the PE of a simple harmonic
    oscillator is given by
    PE = 1/2 k x^2, the force constant k becomes 10 ^ -37 m2.
    using frequency of oscillator = ( k / m2 ) ^1/2,
    frequency = ( 10^ -37m2 / m2 )^ 1/2 = 10^ - 18.5 per second.
    In other words the universe oscillates every 10 ^ 18.5 seconds - about
    its current age!!
    Since the two particles of a simple harmonic oscillator accelerate
    when potential energy gets converted into kinetic energy, the current
    acceleration of the expansion of the universe is removing potential
    energy from the universe.So dark energy removes potential energy from
    the universe.
    It is probably doing this by taking energy from gravitons.
     
  2. jcsd
  3. Jun 11, 2004 #2
    Perhaps the first consideration is whether or not the universe goes through a "big bang" - "big crunch" cycle.
    It is assumed that this might occur in our present condition, but, has this occured before? That is, are we experiencing a cyclic event in "mid-term", or are we in the first cycle of this continuing scenario.
    Is evidence either way even possible, given the totality of expression?
     
  4. Jun 11, 2004 #3
    Kurious, in a word, yes.

    I think dark energy is depriving gravity of carring out its function. In other words, the energy either becomes involved in gravity or dark energy. When radiation becomes dark energy, it reduces the potential available for gravitation.

    Just my thoughts.
     
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Have something to add?



Similar Discussions: Oscillating universe and harmonic oscillator
  1. Harmonic oscillator (Replies: 0)

Loading...