Homework Statement
Using \int_{-\infty}^{\infty}e^{-x^2/2} dx = \sqrt{2\pi}, Integrate x^(5/2) e^(-x) dx from 0 to infinty
2. The attempt at a solution
I tried substituting x = u^2/2 but i could not simplify further.
Please help me with the problem.
Thank you in advance.
1. Homework Statement
If \phi is a usual field is it possible that
H\dot{\phi}=-\partial^2\phi/{\partial x^2}
Where H is the Hubble constant and the dot denotes time derivative
2. Homework Equations
H\dot{\phi}=-\partial^2\phi/{\partial x^2}
3. The Attempt at a Solution
I tried different...
Homework Statement
Derive
Tμν=FμλFνλ-1/4ημνFλθFλθ
From
\mathcal{L}=1/4F_{μν}F^{μν}+A_μJ^μ
Homework Equations
Above
3. The Attempt at a Solution
The first term of the given equation and the second term of the equation to prove are i believe the same.i know, Jμ=\partial_νF^{μν}...