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Haifeng Yang added Quantize K-G Field.tex
over 10 years ago
Commit id: 23ee094476df71314b7428cd202c50ea137c0adc
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\subsection{Quantize Klein-Gordon}
Fourier Transformation:
$$\hat{\phi}(\mathbf{x}) = \int \frac{d^3 k}{(2\pi)^3 } \hat{\tilde{\phi}}(\mathbf{k})e^{i\mathbf{k}\cdot \mathbf{x}}$$
$$\hat{\pi}(\mathbf{x}) = \int \frac{d^3 k}{(2\pi)^3 } \hat{\tilde{\pi}}(\mathbf{k})e^{i\mathbf{k}\cdot \mathbf{x}}$$
