superstring theory
string theory string" the`o*ry (str[i^]ng" th[=e]`[-o]*r[y^]), n. (Physics) A mathematical theory for describing the properties of fundamental particles, which represents the particles as one-dimensional string-like objects, which exist in the normal four dimensions of space-time plus additional dimensions, the total dimensions being ten, eleven, or twenty-six depending on the version of the theory. The properties of fundamental particles in string theory and their manner of interaction with each other depend upon the modes of vibration of the strings[17]. The attractiveness of this theory rests in part on its ability to provide a unified treatment of gravity as well as the three other basic forces of nature, in a manner consistent with quantum mechanics. The great difficulty of doing the calculations required by the theory, however, has thus far (1999) made it impossible to calculate the observable properties, such as the mass, of known particles, such as the electron, proton, mesons, quarks, and neutron; thus there is as yet no experimental verification for the theory. The most popular version of the theory depends on a mathematical property called supersymmetry, and the theory derived form this principle is properly called {superstring theory}, a term which is often used interchangeably with string theory. See also string[17]. [PJC]

The Collaborative International Dictionary of English. 2000.

Look at other dictionaries:

  • Superstring theory — is an attempt to explain all of the particles and fundamental forces of nature in one theory by modelling them as vibrations of tiny supersymmetric strings. It is considered one of the most promising candidate theories of quantum gravity.… …   Wikipedia

  • superstring theory — grand unified theory grand unified theory, grand unification theory grand unification theory . (Theoretical physics) Any of a class of physics theories that attempts to explain the electroweak forces, stong force, and gravitation within a single… …   The Collaborative International Dictionary of English

  • superstring theory — /sooh peuhr string / any supersymmetric string theory in which each type of elementary particle is treated as a vibration of a single fundamental string (superstring) at a particular frequency. * * * Any of a number of theories in particle… …   Universalium

  • superstring theory — su′per•string theo ry [[t]ˈsu pərˌstrɪŋ[/t]] n. phs any supersymmetric string theory in which each type of elementary particle is treated as a vibration of a single fundamental string(superstring)at a particular frequency …   From formal English to slang

  • superstring theory — /sooh peuhr string / any supersymmetric string theory in which each type of elementary particle is treated as a vibration of a single fundamental string (superstring) at a particular frequency …   Useful english dictionary

  • superstring theory — /ˈsupəstrɪŋ θɪəri/ (say soohpuhstring thearree) noun a combination of string theory with the concept of supersymmetry, which is able to incorporate gravitation with the three other fundamental forces …   Australian English dictionary

  • Superstring — Als Superstringtheorie (abkürzend meist Stringtheorie) bezeichnet man eine Sammlung eng verwandter hypothetischer physikalischer Modelle, die alle bisher beobachteten Fundamentalkräfte der Physik einheitlich erklären. Sie gilt damit als Ansatz… …   Deutsch Wikipedia

  • Superstring-Theorie — Als Superstringtheorie (abkürzend meist Stringtheorie) bezeichnet man eine Sammlung eng verwandter hypothetischer physikalischer Modelle, die alle bisher beobachteten Fundamentalkräfte der Physik einheitlich erklären. Sie gilt damit als Ansatz… …   Deutsch Wikipedia

  • Theory of everything — A theory of everything (TOE) is a putative theory of theoretical physics that fully explains and links together all known physical phenomena. Initially, the term was used with an ironic connotation to refer to various overgeneralized theories.… …   Wikipedia

  • theory — /thee euh ree, thear ee/, n., pl. theories. 1. a coherent group of general propositions used as principles of explanation for a class of phenomena: Einstein s theory of relativity. 2. a proposed explanation whose status is still conjectural, in… …   Universalium

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