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In theoretical physics, quantum field theory in curved spacetime (QFTCS) [1] is an extension of quantum field theory from Minkowski spacetime to a general curved spacetime. This theory uses a semi-classical approach; it treats spacetime as a fixed, classical background, while giving a quantum-mechanical description of the matter and energy ...
In theoretical physics, quantum field theory (QFT) is a theoretical framework that combines classical field theory, special relativity, and quantum mechanics. [1]: xi QFT is used in particle physics to construct physical models of subatomic particles and in condensed matter physics to construct models of quasiparticles.
The Bogoliubov transformation is often used to diagonalize Hamiltonians, which yields the stationary solutions of the corresponding Schrödinger equation. The Bogoliubov transformation is also important for understanding the Unruh effect , Hawking radiation , Davies-Fulling radiation (moving mirror model), pairing effects in nuclear physics ...
In quantum field theory, correlation functions, often referred to as correlators or Green's functions, are vacuum expectation values of time-ordered products of field operators.
In mathematical physics, constructive quantum field theory is the field devoted to showing that quantum field theory can be defined in terms of precise mathematical structures. This demonstration requires new mathematics , in a sense analogous to classical real analysis , putting calculus on a mathematically rigorous foundation.
Top Prescription Weight Loss Pills. Anti-obesity medications (AOMs) date back to the 1940s — well before modern regulations from the FDA (U.S. Food and Drug Administration) (FDA) were in place ...
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Compendium of Quantum Physics - Concepts, Experiments, History and Philosophy. Springer. ISBN 978-3-540-70622-9. d'Espagnat, Bernard (2003). Veiled Reality: An Analysis of Quantum Mechanical Concepts (1st ed.). US: Westview Press.