- #1
RedX
- 970
- 3
Does anyone know why:
[tex]<m(k)m(p)>=(2 \pi)^3 \delta(k+p)|m(k)|^2[/tex]
where m(k) and m(p) are the Fourier transform of the order parameter density and the angled brackets <> stand for an ensemble average?
For example, the magnetization M is given by:
[tex]M=<\int d^3r m(r)> [/tex]
[tex]<m(k)m(p)>=(2 \pi)^3 \delta(k+p)|m(k)|^2[/tex]
where m(k) and m(p) are the Fourier transform of the order parameter density and the angled brackets <> stand for an ensemble average?
For example, the magnetization M is given by:
[tex]M=<\int d^3r m(r)> [/tex]