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...

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

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

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

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

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

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

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

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

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

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

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...

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...

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...

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

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

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...

In quantum field theory, the quantum vacuum state (also called the quantum vacuum or vacuum state) is the quantum state with the lowest possible energy...

In quantum field theory, the vacuum expectation value (VEV) of an operator is its average or expectation value in the vacuum. The vacuum expectation value...

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

In quantum field theory, partition functions are generating functionals for correlation functions, making them key objects of study in the path integral...

(1948). Tomonaga, S. and Oppenheimer, J. R. "On Infinite Field Reactions in Quantum Field Theory." Phys. Rev. 74, 224–225 (1948). List of Japanese Nobel...

In quantum mechanics and quantum field theory, the propagator is a function that specifies the probability amplitude for a particle to travel from one...

In theoretical physics, specifically quantum field theory, a beta function, β(g), encodes the dependence of a coupling parameter, g, on the energy scale...

regained popularity with, for example, the paper Effective Field Theory for Massive Gravitons and Gravity in Theory Space by Nima Arkani-Hamed, Howard Georgi...