String field theory (SFT) is a formalism in string theory in which the dynamics of relativistic strings is reformulated in the language of quantum field...

physics, type II string theory is a unified term that includes both type IIA strings and type IIB strings theories. Type II string theory accounts for two...

In physics, string theory is a theoretical framework in which the point-like particles of particle physics are replaced by one-dimensional objects called...

relationship of the string theories to a field theory called eleven-dimensional supergravity. Although a complete formulation of M-theory is not known, such...

'Superstring theory' is a shorthand for supersymmetric string theory because unlike bosonic string theory, it is the version of string theory that accounts...

In physics, a string is a physical entity postulated in string theory and related subjects. Unlike elementary particles, which are zero-dimensional or...

Bosonic string theory is the original version of string theory, developed in the late 1960s. It is so called because it contains only bosons in the spectrum...

Witten's earlier idea of topological quantum field theory. There are two main versions of topological string theory: the topological A-model and the topological...

In theoretical physics, type I string theory is one of five consistent supersymmetric string theories in ten dimensions. It is the only one whose strings...

Nambu-Goto action Bosonic string theory Kondo model (s-d model) Minimal model (Virasoro minimal model) String theory Conformal field theory Supersymmetry Topological...

The history of string theory spans several decades of intense research including two superstring revolutions. Through the combined efforts of many researchers...

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)...

string theory Type IIB string theory Heterotic string N=2 superstring M-theory Matrix theory Introduction to M-theory F-theory String field theory Matrix...

In string theory, a heterotic string is a closed string (or loop) which is a hybrid ('heterotic') of a superstring and a bosonic string. There are two...

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 string theory, the string theory landscape (or landscape of vacua) is the collection of possible false vacua, together comprising a collective "landscape"...

fundamental tool for doing calculations in string theory, and it has been used to understand aspects of quantum field theory, the formalism that physicists use...

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

duality) is an equivalence of two physical theories, which may be either quantum field theories or string theories. S-duality is useful for doing calculations...

conformal field theory defined on the worldsheet. For example, the bosonic string in 26 dimensions has a worldsheet conformal field theory consisting...

field theory are explained, or get further insight, in string theory. Emission and absorption: one of the most basic building blocks of quantum field...

Twistor string theory is an equivalence between N = 4 supersymmetric Yang–Mills theory and the perturbative topological B model string theory in twistor...

considered the worldvolume theory of a large number of D0-branes in Type IIA string theory. In geometry, it is often useful to introduce coordinates. For example...

In physics, a Unified Field Theory (UFT) is a type of field theory that allows all fundamental forces of nature, including gravity, and all elementary...

In string theory, D-branes, short for Dirichlet membrane, are a class of extended objects upon which open strings can end with Dirichlet boundary conditions...

In physics, a Dirac string is a one-dimensional curve in space, conceived of by the physicist Paul Dirac, stretching between two hypothetical Dirac monopoles...

The Chern–Simons theory is a 3-dimensional topological quantum field theory of Schwarz type. It was discovered first by mathematical physicist Albert Schwarz...

representation theory, and in physics to general relativity, quantum field theory, and the theory of scattering amplitudes. Twistor theory arose in the...

Physicists often study fields analogous to the electromagnetic field, which live on the worldvolume of a brane. In string theory, a string may be open (forming...

physics, matrix string theory is a set of equations that describe superstring theory in a non-perturbative framework. Type IIA string theory can be shown...