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Quantum Field theory: Quantum field theory (QFT) is a theoretical framework that combines classical field theory, special relativity, and quantum mechanics. It is used in particle physics to construct physical models of subatomic particles and in condensed matter physics to construct models of quasiparticles. In QFT, particles are not seen as fundamental objects, but rather as excitations of underlying quantum fields. See also Quantum mechanics, Theory of Relativity.
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Annotation: The above characterizations of concepts are neither definitions nor exhausting presentations of problems related to them. Instead, they are intended to give a short introduction to the contributions below. – Lexicon of Arguments.

 
Author Concept Summary/Quotes Sources

Bernulf Kanitscheider on Quantum Field Theory - Dictionary of Arguments

I 172
Quantum field theory/Kanitscheider: here one works, if one assumes curved space-time, with an approximation, where the metric field is not quantized itself, but is used as classical space-time background arena, i.e. the reaction of the matter fields on the space-time is neglected.
But this already reveals that the interaction between matter fields and geometry produces particles from the vacuum!
>Quantum mechanics
, >Relativity theory, >Gravitation/Einstein, >Space-time/Einstein.

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Explanation of symbols: Roman numerals indicate the source, arabic numerals indicate the page number. The corresponding books are indicated on the right hand side. ((s)…): Comment by the sender of the contribution. Translations: Dictionary of Arguments
The note [Concept/Author], [Author1]Vs[Author2] or [Author]Vs[term] resp. "problem:"/"solution:", "old:"/"new:" and "thesis:" is an addition from the Dictionary of Arguments. If a German edition is specified, the page numbers refer to this edition.

Kanitsch I
B. Kanitscheider
Kosmologie Stuttgart 1991

Kanitsch II
B. Kanitscheider
Im Innern der Natur Darmstadt 1996


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