Synonymer & Anagram | Engelska ordet QFT

Exempel på hur man kan använda QFT i en mening

• In theoretical physics, quantum field theory (QFT) is a theoretical framework that combines classical field theory, special relativity, and quantum mechanics.
• Although widely used, they are by no means a necessary feature of QFT, but rather are mathematical conveniences — as demonstrated by lattice field theory, which avoids using the concept altogether.
• More formally, in the context of QFT, the S-matrix is defined as the unitary matrix connecting sets of asymptotically free particle states (the in-states and the out-states) in the Hilbert space of physical states.
• Within the formalism of quantum field theory (QFT) such a picture generally does not exist, because these two representations are unitarily inequivalent.
• For the Schwinger functions there is a list of conditions — analyticity, permutation symmetry, Euclidean covariance, and reflection positivity — which a set of functions defined on various powers of Euclidean space-time must satisfy in order to be the analytic continuation of the set of correlation functions of a QFT satisfying the Wightman axioms.
• Quantization rules in earlier quantum field theory (QFT) frameworks resembled "prescriptions" or "heuristics" more than proofs, especially in non-abelian QFT, where the use of "ghost fields" with superficially bizarre properties is almost unavoidable for technical reasons related to renormalization and anomaly cancellation.
• A third, less obvious, complication is that "unitarily inequivalent representations" are endemic in QFT; for example, the same patch of spacetime can be represented by a vacuum by an inertial observer, but as a thermal heat bath by an accelerating observer that perceives Unruh radiation, raising the difficult question of whether the vacuum structure or heat bath structure is the real structure, or whether both of these inequivalent structures are separately real.
• Candelas is also notable for his contributions in the field of quantum field theory (QFT) especially the renormalisation of QFT near black holes.
• High Energy Phenomenology, String and Gravity: dark matter, dark energy, nature of electroweak symmetry breaking, neutrino physics, collider physics, holographic and quantum informatic property of gravity, scattering amplitudes, inflationary cosmology, quantum geometry and branes, exact results in QFT.

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