enow.com Web Search

Search results

  1. Results from the WOW.Com Content Network
  2. Relationship between string theory and quantum field theory

    en.wikipedia.org/wiki/Relationship_between...

    These parameters can be adjusted so that calculations give adequate results. In string theory, this is unnecessary since the behaviour of the strings is presumed to be known to every scale. Fermions: in the bosonic string, a string can be described as an elastic one-dimensional object (i.e. a line) "living" in spacetime. In superstring theory ...

  3. String theory - Wikipedia

    en.wikipedia.org/wiki/String_theory

    In his book The Trouble With Physics, physicist Lee Smolin of the Perimeter Institute for Theoretical Physics claims that this is the principal weakness of string theory as a theory of quantum gravity, saying that string theory has failed to incorporate this important insight from general relativity. [129]

  4. AdS/CFT correspondence - Wikipedia

    en.wikipedia.org/wiki/AdS/CFT_correspondence

    In 1974, Joël Scherk and John Schwarz suggested that string theory was therefore not a theory of nuclear physics as many theorists had thought but instead a theory of quantum gravity. [53] At the same time, it was realized that hadrons are actually made of quarks, and the string theory approach was abandoned in favor of quantum chromodynamics.

  5. String (physics) - Wikipedia

    en.wikipedia.org/wiki/String_(physics)

    String vibrations. In physics, a string is a physical entity postulated in string theory and related subjects. Unlike elementary particles, which are zero-dimensional or point-like by definition, strings are one-dimensional extended entities. Researchers often have an interest in string theories because theories in which the fundamental ...

  6. Holographic principle - Wikipedia

    en.wikipedia.org/wiki/Holographic_principle

    The duality represents a major advance in understanding of string theory and quantum gravity. [12] This is because it provides a non-perturbative formulation of string theory with certain boundary conditions and because it is the most successful realization of the holographic principle.

  7. String field theory - Wikipedia

    en.wikipedia.org/wiki/String_field_theory

    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 theory.This is accomplished at the level of perturbation theory by finding a collection of vertices for joining and splitting strings, as well as string propagators, that give a Feynman diagram-like expansion for string scattering amplitudes.

  8. Superstring theory - Wikipedia

    en.wikipedia.org/wiki/Superstring_theory

    Development of a quantum theory of gravity therefore requires different means than those used for the other forces. [1] According to superstring theory, or more generally string theory, the fundamental constituents of reality are strings with radius on the order of the Planck length (about 10 −33 cm). An appealing feature of string theory is ...

  9. Brane - Wikipedia

    en.wikipedia.org/wiki/Brane

    This connection has led to important insights into gauge theory and quantum field theory. For example, it led to the discovery of the AdS/CFT correspondence, a theoretical tool that physicists use to translate difficult problems in gauge theory into more mathematically tractable problems in string theory. [6]