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

Thermodynamic potential and energy density in cosmic models

  1. Oct 19, 2012 #1
    I'm reading this paper

    http://arxiv.org/abs/0911.1728

    It's about the authors' consideration of the Mass Varying Neutrino model with a new approach that try to explain the cosmic acceleration then.

    I often encounter the thermodynamic potential during reading and re-calculating the equations. However, I'm not sure I got its meaning right, also the relation of thermodynamic potential and energy density. According to D part in Section I, the energy density is [itex]\rho = \frac{\partial\Omega}{\partial m}[/itex] where Ω is the thermodynamic potential density and m is the mass.

    However, with that definition I couldn't achieve (72),(73) later.

    By the way, I found how to evaluate the integral (31) but couldn't do that with (73), which is [itex]\int_k^\inf \frac{z^2\sqrt{z^2-k^2}}{e^z+1}dz[/itex].

    Any help would be appreciate. Thank you!
     
  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



Similar Discussions: Thermodynamic potential and energy density in cosmic models
  1. Energy Density (Replies: 13)

Loading...