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homework and exercises - In calculation of Hamiltonian of real scalar field (Quantum field theory Srednicki) - Physics Stack Exchange
![homework and exercises - Why $\langle k,n|\varphi(x)|0\rangle = e^{-ikx} \langle k,n|\varphi(0)|0\rangle$? (Srednicki's Quantum field theory) - Physics Stack Exchange homework and exercises - Why $\langle k,n|\varphi(x)|0\rangle = e^{-ikx} \langle k,n|\varphi(0)|0\rangle$? (Srednicki's Quantum field theory) - Physics Stack Exchange](https://i.stack.imgur.com/flPsf.png)
homework and exercises - Why $\langle k,n|\varphi(x)|0\rangle = e^{-ikx} \langle k,n|\varphi(0)|0\rangle$? (Srednicki's Quantum field theory) - Physics Stack Exchange
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homework and exercises - In calculation of Hamiltonian of real scalar field (Quantum field theory Srednicki) - Physics Stack Exchange
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