physics, an effective field theory is a type of approximation, or effective theory, for an underlying physical theory, such as a quantum field theory or a statistical...

example, effective field theory is a method used to describe physical theories when there is a hierarchy of scales. Effective field theories in physics...

In quantum field theory, the quantum effective action is a modified expression for the classical action taking into account quantum corrections while...

many-body problem. Lee and collaborators developed lattice effective field theory. Effective field theory (EFT) is an organizing principle for the interactions...

In theoretical physics, quantum field theory (QFT) is a theoretical framework that combines field theory and the principle of relativity with ideas behind...

scalar quantum field that has been observed in nature is the Higgs field. However, scalar quantum fields feature in the effective field theory descriptions...

In quantum chromodynamics, heavy quark effective theory (HQET) is an effective field theory describing the physics of heavy (that is, of mass far greater...

(1995). "Introduction to the Effective Field Theory Description of Gravity". In Cornet, Fernando (ed.). Effective Theories: Proceedings of the Advanced...

Chiral perturbation theory (ChPT) is an effective field theory constructed with a Lagrangian consistent with the (approximate) chiral symmetry of quantum...

In gauge theory and mathematical physics, a topological quantum field theory (or topological field theory or TQFT) is a quantum field theory that computes...

physics Yang–Mills theory and the mass gap. Quantum particles described by the theory have mass but the classical waves of the field travel at the speed...

In physics and probability theory, Mean-field theory (MFT) or Self-consistent field theory studies the behavior of high-dimensional random (stochastic)...

In quantum field theory, soft-collinear effective theory (or SCET) is a theoretical framework for doing calculations that involve interacting particles...

quantum field theory and effective field theory, referring to themselves as phenomenologists.[citation needed] Others make use of lattice field theory and...

mediated by a virtual W− boson, of which the Fermi theory is the low-energy effective field theory. According to Eugene Wigner, who together with Jordan...

are an attempt at a mathematically rigorous formulation of quantum field theory. Arthur Wightman formulated the axioms in the early 1950s, but they were...

incompatible. These are completely outdated and no longer relevant. Effective field theory shows that general relativity and quantum mechanics work together...

In physics, a gauge theory is a type of field theory in which the Lagrangian, and hence the dynamics of the system itself, does not change under local...

large field models and the competing new inflation models are called small field models. In this situation, the predictions of effective field theory are...

Renormalization is a collection of techniques in quantum field theory, statistical field theory, and the theory of self-similar geometric structures, that are used...

Quantum hadrodynamics (QHD) is an effective field theory pertaining to interactions between hadrons, that is, hadron-hadron interactions or the inter-hadron...

In quantum field theory, the Nambu–Jona-Lasinio model (or more precisely: the Nambu and Jona-Lasinio model) is a complicated effective theory of nucleons...

physics, stochastic differential equations (SDE), topological field theories, and the theory of pseudo-Hermitian operators. It can be seen as an algebraic...

by quantum field theory. Depending on the Planck energy cutoff and other factors, the quantum vacuum energy contribution to the effective cosmological...

(e.g., electrons) with the quantized electromagnetic field. NRQED is an effective field theory suitable for calculations in atomic and molecular physics...

four fermionic fields at a point. Local here means that it all happens at the same spacetime point. This might be an effective field theory or it might be...

topological and conformal field theories to other areas of mathematics. In the book Renormalization and Effective Field Theory he introduced a rigorous...

Standard Model Local quantum physics Nonlocal Effective field theory Correlation function (quantum field theory) Renormalizable Cutoff Infrared divergence...

In quantum field theory, correlation functions, often referred to as correlators or Green's functions, are vacuum expectation values of time-ordered products...

(1995), "Introduction to the Effective Field Theory Description of Gravity", in Cornet, Fernando (ed.), Effective Theories: Proceedings of the Advanced...