Recent content by seflyer

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    Graduate Is there an analytical way to get average energy of a Fermi-Dirac gas?

    To CompuChip: Thanks. Now I've corrected the expression ( Not exactly like yours. ) The question is more clear now.
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    Graduate Is there an analytical way to get average energy of a Fermi-Dirac gas?

    The average particle energy of a Fermi-Dirac gas, with zero chemical potential, is about 3.15T, where T is the temperture of this gas. To get the average energy, one needs to do an integration. The integrand is something like \frac{x^3}{e^{x/k_BT}+1}. I could get the result numerically. But...
    • seflyer
    • Thread
    • Analytical Average average energy Energy Fermi-dirac Gas
    • Replies: 5
    • Forum: Quantum Physics
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    Graduate Is the vacuum stress energy tensor Lorentz invariant ?

    Although vacuum does not mean containing nothing, there should be no preferred coordinate system in a vacuum. But if its stress-energy tensor (T) is not Lorentz-invariant, then there would be one. Therefore, T must be Lorentz-invariant. It turns out that we have only one choice for such a...