Search results for "String field theory"

showing 5 items of 15 documents

Factorization in closed string field theory

1994

Abstract The so long made assumption, that a general closed-string vertex operator V should be built as a product of left- and right-moving vertex operators, rests on the fact that the closed-string Fock spce is constructed as a tensor product of left- and right-moving open-string Fock spaces. In this letter we will relax this assumption by proving that factorization of closed-string vertices is a general rule.

PhysicsNuclear and High Energy PhysicsPure mathematicsFísicaString field theoryFock spaceVertex (geometry)High Energy Physics::TheoryTensor productOperator (computer programming)Operator algebraFactorizationQuantum mechanicsProduct (mathematics)General Theoretical PhysicsPhysics Letters B
researchProduct

NON-PERTURBATIVE VACUUM WAVE-FUNCTIONAL AND CLOSED STRING EQUATIONS OF MOTION

1989

The anomalous conformal dependence of the vacuum wave-functional is studied in the non-perturbative regime of the closed bosonic string theory. It is shown that the vanishing of the vacuum expectation value of the stress-energy tensor trace leads to the implementation of a suitable variational condition on the wave-functional, provided that the dilaton condensate be taken as a conformal compensator for the graviton condensate of the embedding space.

PhysicsNuclear and High Energy PhysicsQED vacuumBosonic string theoryGravitonGeneral Physics and AstronomyAstronomy and AstrophysicsString field theoryGeneral Relativity and Quantum CosmologyNon-critical string theoryClassical mechanicsString cosmologyDilatonVacuum expectation valueModern Physics Letters A
researchProduct

A star product in lattice gauge theory

1993

Abstract We consider a variant of the cup product of simplicial cochains and its applications in discrete formulations of non-abelian gauge theory. The standard geometrical ingredients in the continuum theory all have natural analogues on a simplicial complex when this star product is used to translate the wedge product of differential forms. Although the star product is non-associative, it is graded-commutative, and the coboundary operator acts as a deviation on the star algebra. As such, it is reminiscent of the star product considered in some approaches to closed string field theory, and we discuss applications to the three dimensional non-abelian Chern-Simons theory.

PhysicsNuclear and High Energy PhysicsTheoretical physicsSimplicial complexDifferential formStar productCup productProduct (mathematics)Quantum mechanicsString field theoryExterior algebraGeneral Theoretical PhysicsDirect productPhysics Letters B
researchProduct

N-string vertices in string field theory.

1993

We give the general form of the vertex corresponding to the interaction of an arbitrary number of strings. The technique employed relies on the ``comma" representation of String Field Theory where string fields and interactions are represented as matrices and operations between them such as multiplication and trace. The general formulation presented here shows that the interaction vertex of N strings, for any arbitrary N, is given as a function of particular combinations of matrices corresponding to the change of representation between the full string and the half string degrees of freedom.

PhysicsTheoryofComputation_MISCELLANEOUSHigh Energy Physics - TheoryEmpty stringFOS: Physical sciencesFísicaString searching algorithmString field theoryType I string theoryRelationship between string theory and quantum field theoryCombinatoricsNon-critical string theoryHigh Energy Physics::TheoryString operationsHigh Energy Physics - Theory (hep-th)String dualityPhysical review. D, Particles and fields
researchProduct

The three-vertex in the closed half-string field theory and the general gluing and resmoothing theorem

1997

In this letter we prove that the half-string three-vertex in closed string field theory satisfies the general gluing and resmoothing theorem. We also demonstrate how one calculates amplitudes in the half-string approach to closed string field theory, by working out explicitly a few simple three-amplitudes.

Pure mathematicsCompactification (physics)General Physics and AstronomyStatistical and Nonlinear PhysicsString field theoryType I string theoryRelationship between string theory and quantum field theoryCombinatoricsHigh Energy Physics::TheoryNon-critical string theoryString phenomenologyQuantum gravityString cosmologyMathematical PhysicsMathematicsJournal of Physics A: Mathematical and General
researchProduct