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Analytic solution for tachyon condensation in open string field theory

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arxiv hep-th/0511286 v2 pith:C6CN6VGU submitted 2005-11-29 hep-th

classification hep-th
keywords solutionfieldstringanalyticequationmotionnonperturbativeopen
verification ladder T0 review T1 audit T2 compute T3 formal
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We propose a new basis in Witten's open string field theory, in which the star product simplifies considerably. For a convenient choice of gauge the classical string field equation of motion yields straightforwardly an exact analytic solution that represents the nonperturbative tachyon vacuum. The solution is given in terms of Bernoulli numbers and the equation of motion can be viewed as novel Euler--Ramanujan-type identity. It turns out that the solution is the Euler--Maclaurin asymptotic expansion of a sum over wedge states with certain insertions. This new form is fully regular from the point of view of level truncation. By computing the energy difference between the perturbative and nonperturbative vacua, we prove analytically Sen's first conjecture.

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Cited by 7 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score. Full citation record

  1. Recursive-algebraic solution of the closed string tachyon vacuum equation

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    Presents a seam-graded recursive algebraic method that converts the closed string tachyon vacuum equation into a sequence of matrix inversions in the zero-momentum Lorentz-scalar sector.

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    A 2-form connection is defined in the space of open string field theory solutions, producing invariant higher holonomies and 3-form curvature potentially corresponding to the B-field.

  3. Higher Structures on Boundary Conformal Manifolds: Higher Berry Phase and Boundary Conformal Field Theory

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    A 2-form higher Berry connection on boundary conformal manifolds is defined from boundary-condition-changing operator OPE phases; it reproduces the B-field and WZ term in string theory examples.

  4. Singular field redefinition between Witten's string field theory and Witten's theory deformed by Ellwood invariant

    hep-th 2026-01 conditional novelty 6.0 of 10

    A singular field redefinition connects Witten's open string field theory to its Ellwood-invariant deformation, and the tachyon vacuum transfers consistently.

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    Authors embed Yang-Mills BV-multiplet into N=2 spinning worldline path integral, pull back to supermoduli space integral form, and recover the Yang-Mills action upon projection to Fock space.

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    D0-brane mass in 26D open bosonic string field theory equals the central charge of the spontaneously broken Poincaré algebra.

  7. Aspects of strings without spacetime supersymmetry

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    A survey of tachyons and tadpoles in non-supersymmetric closed and orientifold strings, including ten-dimensional models and landscape attempts.

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