Timeline for Annihilation and creation operator - $\phi$ and $\pi$ for Klein-Gordon Field
Current License: CC BY-SA 3.0
10 events
| when toggle format | what | by | license | comment | |
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| Mar 20, 2013 at 18:08 | vote | accept | J L | ||
| Mar 17, 2013 at 12:09 | history | edited | J L | CC BY-SA 3.0 |
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| Mar 17, 2013 at 11:51 | history | edited | J L | CC BY-SA 3.0 |
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| Mar 16, 2013 at 19:30 | comment | added | J L | Thank you, sorry for that silly error. Tomorrow I will update my answer with that and the proof of the CCR in the momentum basis. | |
| Mar 16, 2013 at 19:04 | comment | added | twistor59 | If you look at P&S p xxi, they note that in three-dimensional FTs, the signs in the exponents are reversed from the ones in their 4d equations, and 3d is what you're doing. | |
| Mar 16, 2013 at 18:35 | comment | added | J L | I was following Peskin's convention $\int d^4x e^{ikx}=(2\pi)^4\delta^{4}(k)$ | |
| Mar 16, 2013 at 18:33 | comment | added | twistor59 | In the very first integral, where you're transforming $\phi(x)$ to momentum space I think you should be integrating against $e^{-ip'x}$ (i.e. minus sign) and ditto when you're transforming $\pi(x)$ to momentum space | |
| Mar 16, 2013 at 18:21 | history | edited | J L | CC BY-SA 3.0 |
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| Mar 16, 2013 at 18:05 | history | edited | J L | CC BY-SA 3.0 |
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| Mar 16, 2013 at 17:32 | history | answered | J L | CC BY-SA 3.0 |