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- W2912263709 abstract "The scalar field action is given by (Sleft[ phi right] = - frac{1}{2} int d^4x left[ eta ^{mu nu } partial _{mu } phi partial _{nu } phi + m^2 phi ^2 right] ). We promote the field (phi ( t, vec {x})) to an operator (hat{phi } ( t, vec {x})) with associated creation and annihilation operators, which we can then make time-dependent as $$ left. begin{array}{cc} {hat{a}}_{vec {k}}^{+} &{} rightarrow hat{a}_{vec {k}}^{+}(t) := e^{i omega _k t} hat{a}_{vec {k}}^{+} hat{a}_{vec {k}}^{-} &{} rightarrow hat{a}_{vec {k}}^{-}(t) := e^{- i omega _k t} hat{a}_{vec {k}}^{-} end{array}right} text {Dispersion relation:} ~ omega _{vec {k}} = c |vec {k} |~~,~~~ m=0~. $$" @default.
- W2912263709 created "2019-02-21" @default.
- W2912263709 creator A5063942324 @default.
- W2912263709 creator A5082347092 @default.
- W2912263709 date "2019-01-01" @default.
- W2912263709 modified "2023-10-16" @default.
- W2912263709 title "Quantum Field Theory in Curved Space-Time Backgrounds" @default.
- W2912263709 doi "https://doi.org/10.1007/978-3-030-10919-6_15" @default.
- W2912263709 hasPublicationYear "2019" @default.
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