Results 41 to 50 of about 130,580 (217)

Phases of bosonic strings and two dimensional gauge theories [PDF]

open access: yes, 2002
We propose that the extrinsic curvature and torsion of a bosonic string can be employed as Hamiltonian variables in a two dimensional Landau-Ginzburg gauge field theory.
A. Niemi
semanticscholar   +1 more source

The generalized Bergshoeff-de Roo identification. Part II

open access: yesJournal of High Energy Physics, 2021
We recently introduced a T-duality covariant mechanism to compute all-order higher-derivative interactions in the heterotic string. Here we extend the formalism to account for a two-parameter family of corrections that also include the bosonic string and
W. Baron, D. Marques
doaj   +1 more source

Higher-spin Realisations of the Bosonic String [PDF]

open access: yes, 1995
It has been shown that certain $W$ algebras can be linearised by the inclusion of a spin--1 current. This provides a way of obtaining new realisations of the $W$ algebras.
Lu, H., Pope, C. N., Xu, K. W.
core   +2 more sources

On Minimal N=4 Topological Strings And The (1,k) Minimal Bosonic String

open access: yes, 2005
In this paper we consider tree-level scattering in the minimal N=4 topological string and show that a large class of N-point functions can be recast in terms of corresponding amplitudes in the (1,k) minimal bosonic string.
A. Giveon   +27 more
core   +4 more sources

Worldsheet instantons and the amplitude for string pair production in an external field as a WKB exact functional integral

open access: yesJournal of High Energy Physics, 2018
We revisit the problem of charged string pair creation in a constant external electric field. The string states are massive and creation of pairs from the vacuum is a tunnelling process, analogous to the Schwinger process where charged particle-anti ...
James Gordon, Gordon W. Semenoff
doaj   +1 more source

Positivity of the Veneziano amplitude in D = 4

open access: yesJournal of High Energy Physics, 2022
The Veneziano amplitude was put forward as a solution to the axioms of the S-matrix bootstrap. However, unitarity, reflected in the positivity of the coefficients in the Gegenbauer expansion of the amplitude is not obvious.
Pronobesh Maity
doaj   +1 more source

New Form of the T-Duality Due to the Stability of a Compact Dimension

open access: yes, 2008
We study behaviors of a compact dimension and the $T$-duality, in the presence of the wrapped closed bosonic strings. When the closed strings interact and form another system of strings, the radius of compactification increases.
A. Giveon   +13 more
core   +1 more source

Classical Interactions for Tensionless Strings [PDF]

open access: yes, 1996
Using an ``action at a distance'' formulation we probe the possible classical interactions for tensionless strings, (the $T\to 0$ limit of the ordinary bosonic string.) We find $G_{\mu\nu}$ and $B_{\mu\nu}$ type interactions but no dilaton interactions ...
Barcelos-Neto   +23 more
core   +2 more sources

Plahte diagrams for string scattering amplitudes

open access: yesJournal of High Energy Physics, 2021
Plahte identities are monodromy relations between open string scattering amplitudes at tree level derived from the Koba-Nielsen formula. We represent these identities by polygons in the complex plane.
Pongwit Srisangyingcharoen   +1 more
doaj   +1 more source

Comments on the RG‐Flow in Open String Field Theory

open access: yesFortschritte der Physik, Volume 73, Issue 12, December 2025.
Abstract We define a metric G$G$ on the KBc‐subalgebra modulo gauge and describe the worldsheet RG‐flow as the gradient flow of the action of cubic open string field theory, where the flow lines are kink‐solitons. In particular, for a constant tachyon the gradient flow equations are equivalent to the RG‐equations. Additionally, a more general family of
Julius Hristov
wiley   +1 more source

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