physics and mathematical physics, in particular in effective field theory, a form factor is a function that encapsulates the properties of a certain particle...

unpaired outer electrons of an atom. Electric form factor Form factor (quantum field theory) Magnetic form factors, Andrey Zheludev, HFIR Center for Neutron...

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...

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

Form factor (quantum field theory), a semi-empirical formula used in effective quantum field theories Atomic form factor, or atomic scattering factor...

application in the quantum field theory of the weak force, and its unification with electromagnetism in the electroweak theory. Gauge theories became even more...

A conformal field theory (CFT) is a quantum field theory that is invariant under conformal transformations. In two dimensions, there is an infinite-dimensional...

physics, scalar field theory can refer to a relativistically invariant classical or quantum theory of scalar fields. A scalar field is invariant under...

Loop quantum gravity (LQG) is a theory of quantum gravity that incorporates matter of the Standard Model into the framework established for the intrinsic...

structure factor in solid-state physics, and the form factor (quantum field theory). The nucleon (proton and neutron) electromagnetic form factors describe...

formalism on fields, and more generally, for classical field theory, is to provide a clear mathematical foundation for quantum field theory, which is infamously...

descriptions of the same quantum system. Another advantage is that it is in practice easier to guess the correct form of the Lagrangian of a theory, which naturally...

In quantum mechanics, perturbation theory is a set of approximation schemes directly related to mathematical perturbation for describing a complicated...

The de Broglie–Bohm theory is an interpretation of quantum mechanics which postulates that, in addition to the wavefunction, an actual configuration of...

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...

theory is used in a wide range of fields and reaches its most sophisticated and advanced forms in quantum field theory. Perturbation theory (quantum mechanics)...

Shor's algorithm is a quantum algorithm for finding the prime factors of an integer. It was developed in 1994 by the American mathematician Peter Shor...

of all quantum physics, which includes quantum chemistry, quantum field theory, quantum technology, and quantum information science. Quantum mechanics...

Quantum chaos is a branch of physics focused on how chaotic classical dynamical systems can be described in terms of quantum theory. The primary question...

string theory to another type of physical theory called a quantum field theory. One of the challenges of string theory is that the full theory does not...

theories of quantum gravity, formulated in terms of string theory or M-theory. On the other side of the correspondence are conformal field theories (CFT)...

extended in space and time, is known as quantum field theory. In particle physics, quantum field theories form the basis for our understanding of elementary...

manifestly covariant formalism for quantum field theory, but did not provide as automated a way to handle symmetry factors and loops, although he was first...

predictions of the Standard Model, quantum field theory and general relativity are not expected to apply, and quantum effects of gravity are expected to...

the proton, neutron and pion. QCD is a type of quantum field theory called a non-abelian gauge theory, with symmetry group SU(3). The QCD analog of electric...

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

In quantum field theory, a fermionic field is a quantum field whose quanta are fermions; that is, they obey Fermi–Dirac statistics. Fermionic fields obey...

system, the quantum number is said to be "good", and acts as a constant of motion in the quantum dynamics. In the era of the old quantum theory, starting...

For many years, the fields of quantum mechanics and computer science formed distinct academic communities. Modern quantum theory developed in the 1920s...