advanced_notions:quantum_field_theory:qft_curved_spacetime
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advanced_notions:quantum_field_theory:qft_curved_spacetime [2018/05/27 14:47] jakobadmin |
advanced_notions:quantum_field_theory:qft_curved_spacetime [2018/05/30 06:21] 89.12.128.15 [Intuitive] |
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| + | Since in general relativity the curvature corresponds to the gravitational field, QFT in curved spacetime corresponds to a normal QFT with an external source (=the gravitational field). | ||
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| + | For a curvature that depends on the time, we are dealing with a time varying source that can, for example, produce particles. A proper analogy is a driven harmonic oscillator. | ||
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| + | It is important to note that QFT in curved spacetime is not quantum gravity. In a theory of quantum gravity we would take the backreaction of quantum effects on the spactime into account. In contrast, in curved spacetime QFT the curved spacetime is merely a background structure, i.e. an external source and not treated quantum mechanically. | ||
| - | <note tip> | ||
| - | Explanations in this section should contain no formulas, but instead colloquial things like you would hear them during a coffee break or at a cocktail party. | ||
| - | </note> | ||
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| <tabbox Concrete> | <tabbox Concrete> | ||
advanced_notions/quantum_field_theory/qft_curved_spacetime.txt ยท Last modified: 2018/05/30 06:21 by 89.12.128.15
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