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- String_field_theory abstract "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. In most string field theories, this expansion is encoded by a classical action found by second-quantizing the free string and adding interaction terms. As is usually the case in second quantization, a classical field configuration of the second-quantized theory is given by a wave function in the original theory. In the case of string field theory, this implies that a classical configuration, usually called the string field, is given by an element of the free string Fock space.The principal advantages of the formalism are that it allows the computation of off-shell amplitudes and, when a classical action is available, gives non-perturbative information that cannot be seen directly from the standard genus expansion of string scattering. In particular, following the work of Ashoke Sen, it has been useful in the study of tachyon condensation on unstable D-branes. It has also had applications to topological string theory, non-commutative geometry, and strings in low dimensions.String field theories come in a number of varieties depending on which type of string is second quantized: Open string field theories describe the scattering of open strings, closed string field theories describe closed strings, while open-closed string field theories include both open and closed strings.In addition, depending on the method used to fix the worldsheet diffeomorphisms and conformal transformations in the original free string theory, the resulting string field theories can be very different. Using light cone gauge, yields light-cone string field theories whereas using BRST quantization, one finds covariant string field theories. There are also hybrid string field theories, known as covariantized light-cone string field theories which use elements of both light-cone and BRST gauge-fixed string field theories.A final form of string field theory, known as background independent open string field theory, takes a very different form; instead of second quantizing the worldsheet string theory, it second quantizes the space of two-dimensional quantum field theories.".
- String_field_theory thumbnail Light_Cone_String_Propagator.svg?width=300.
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- String_field_theory wikiPageOutDegree "61".
- String_field_theory wikiPageRevisionID "705863735".
- String_field_theory wikiPageWikiLink Action_(physics).
- String_field_theory wikiPageWikiLink André_Neveu.
- String_field_theory wikiPageWikiLink Ashoke_Sen.
- String_field_theory wikiPageWikiLink BRST_quantization.
- String_field_theory wikiPageWikiLink Batalin–Vilkovisky_formalism.
- String_field_theory wikiPageWikiLink Bosonic_string_theory.
- String_field_theory wikiPageWikiLink Canonical_quantization.
- String_field_theory wikiPageWikiLink Category:String_theory.
- String_field_theory wikiPageWikiLink Charles_Thorn.
- String_field_theory wikiPageWikiLink Conformal_field_theory.
- String_field_theory wikiPageWikiLink Conformal_map.
- String_field_theory wikiPageWikiLink D-brane.
- String_field_theory wikiPageWikiLink Diffeomorphism.
- String_field_theory wikiPageWikiLink Edward_Witten.
- String_field_theory wikiPageWikiLink Equations_of_motion.
- String_field_theory wikiPageWikiLink F-theory.
- String_field_theory wikiPageWikiLink Feynman_diagram.
- String_field_theory wikiPageWikiLink Field_(physics).
- String_field_theory wikiPageWikiLink Fock_space.
- String_field_theory wikiPageWikiLink Fuzzball_(string_theory).
- String_field_theory wikiPageWikiLink Gauge_theory.
- String_field_theory wikiPageWikiLink John_Henry_Schwarz.
- String_field_theory wikiPageWikiLink Keiji_Kikkawa.
- String_field_theory wikiPageWikiLink Killing_vector_field.
- String_field_theory wikiPageWikiLink Light_cone_gauge.
- String_field_theory wikiPageWikiLink List_of_string_theory_topics.
- String_field_theory wikiPageWikiLink Little_string_theory.
- String_field_theory wikiPageWikiLink Loop_quantum_gravity.
- String_field_theory wikiPageWikiLink Lorentz_covariance.
- String_field_theory wikiPageWikiLink Michael_Green_(physicist).
- String_field_theory wikiPageWikiLink Michio_Kaku.
- String_field_theory wikiPageWikiLink Nathan_Berkovits.
- String_field_theory wikiPageWikiLink On_shell_and_off_shell.
- String_field_theory wikiPageWikiLink Perturbation_theory_(quantum_mechanics).
- String_field_theory wikiPageWikiLink Peter_C._West.
- String_field_theory wikiPageWikiLink Probability_amplitude.
- String_field_theory wikiPageWikiLink Propagator.
- String_field_theory wikiPageWikiLink Quantum_field_theory.
- String_field_theory wikiPageWikiLink Ramond–Ramond_field.
- String_field_theory wikiPageWikiLink Relationship_between_string_theory_and_quantum_field_theory.
- String_field_theory wikiPageWikiLink Spacetime.
- String_field_theory wikiPageWikiLink Special_relativity.
- String_field_theory wikiPageWikiLink Stanley_Mandelstam.
- String_field_theory wikiPageWikiLink String_cosmology.
- String_field_theory wikiPageWikiLink String_theory.
- String_field_theory wikiPageWikiLink Stuart_Samuel_(physicist).
- String_field_theory wikiPageWikiLink Supergravity.
- String_field_theory wikiPageWikiLink Supersymmetry.
- String_field_theory wikiPageWikiLink Tachyon_condensation.
- String_field_theory wikiPageWikiLink The_Elegant_Universe.
- String_field_theory wikiPageWikiLink Topological_string_theory.
- String_field_theory wikiPageWikiLink Wess–Zumino–Witten_model.
- String_field_theory wikiPageWikiLink Yang–Mills_theory.
- String_field_theory wikiPageWikiLink Zeta_function_regularization.
- String_field_theory wikiPageWikiLink File:Closed_String_Light_Cone_Vertex.svg.
- String_field_theory wikiPageWikiLink File:Light_Cone_String_Propagator.svg.
- String_field_theory wikiPageWikiLink File:OSFT_propagator.svg.
- String_field_theory wikiPageWikiLink File:OSFT_three_vertex.svg.
- String_field_theory wikiPageWikiLinkText "String field theory".
- String_field_theory wikiPageWikiLinkText "string field theories".
- String_field_theory wikiPageWikiLinkText "string field theory".
- String_field_theory wikiPageWikiLinkText "string fields".
- String_field_theory wikiPageWikiLinkText "string theory in a field form".
- String_field_theory wikiPageUsesTemplate Template:Ordered_list.
- String_field_theory wikiPageUsesTemplate Template:Reflist.
- String_field_theory wikiPageUsesTemplate Template:String_theory.
- String_field_theory subject Category:String_theory.
- String_field_theory hypernym Formalism.
- String_field_theory type ProgrammingLanguage.
- String_field_theory type Physic.
- String_field_theory comment "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.".
- String_field_theory label "String field theory".
- String_field_theory sameAs Q1051921.
- String_field_theory sameAs Säiekenttäteoria.
- String_field_theory sameAs Théorie_de_champs_de_cordes.
- String_field_theory sameAs 弦の場の理論.
- String_field_theory sameAs 끈_장론.
- String_field_theory sameAs m.01j2q3.
- String_field_theory sameAs Strängfältteori.
- String_field_theory sameAs Q1051921.
- String_field_theory sameAs 弦场论.
- String_field_theory wasDerivedFrom String_field_theory?oldid=705863735.
- String_field_theory depiction Light_Cone_String_Propagator.svg.
- String_field_theory isPrimaryTopicOf String_field_theory.