1. PF Contest - Win "Conquering the Physics GRE" book! Click Here to Enter
    Dismiss Notice
Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Chaplygin gas please help

  1. May 17, 2012 #1
    Chaplygin gas please help!!!

    Hello every one!

    How many of you have learnt about the unification of dark energy and dark matter?
    I'm doing my research regarding the Chaplygin gas and i've come across this research paper.
    arxiv.org/pdf/grqc/0202064.pdf (pls add https:// part)

    At the end, they solve the equation 36 (3/2*ab′′ + (1 − w)ab′ − (1 + w)(1 − 3αw)b = 0
    , and only use one boundary which is b′(aeq) = 0. Don't we need another boundary condition since this is a second order DE?

    Any knowledge will be much appreciated!!!
  2. jcsd
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Can you offer guidance or do you also need help?
Draft saved Draft deleted