Results 11 to 20 of about 475,776 (345)

Experimental String Field Theory [PDF]

open access: yesJournal of High Energy Physics, 2002
We develop efficient algorithms for level-truncation computations in open bosonic string field theory. We determine the classical action in the universal subspace to level (18,54) and apply this knowledge to numerical evaluations of the tachyon ...
  +81 more
core   +4 more sources

Free Field Theory as a String Theory? [PDF]

open access: yesComptes Rendus. Physique, 2004
An approach to systematically implement open-closed string duality for free large $N$ gauge theories is summarised. We show how the relevant closed string moduli space emerges from a reorganisation of the Feynman diagrams contributing to free field ...
Bjorken   +12 more
core   +4 more sources

Closed String Cohomology in Open String Field Theory [PDF]

open access: yesJournal of High Energy Physics, 2010
We show that closed string states in bosonic string field theory are encoded in the cyclic cohomology of cubic open string field theory (OSFT) which, in turn, classifies the deformations of OSFT.
Moeller, Nicolas, Sachs, Ivo
core   +3 more sources

String Cosmology — Large-Field Inflation in String Theory [PDF]

open access: hybridInternational Journal of Modern Physics A, 2015
This is a short review of string cosmology. We wish to connect string-scale physics as closely as possible to observables accessible to current or near-future experiments. Our possible best hope to do so is a description of inflation in string theory. The energy scale of inflation can be as high as that of Grand Unification (GUT). If this is the case,
Alexander Westphal
openalex   +7 more sources

Causality in string field theory

open access: yesEurophysics Letters, 2023
Abstract In this letter, we will investigate causality in string field theory using pp-wave light-cone gauge string field theory. We will generalise the Ramsey scheme to string field theory, and use it to analyze string field theoretical processes.
Shabir, Arshid   +5 more
openaire   +3 more sources

String field theory of noncritical strings [PDF]

open access: yesPhysics Letters B, 1993
13 pages ( LaTex file ), KEK-TH-364, UT ...
Ishibashi, Nobuyuki, Kawai, Hikaru
openaire   +2 more sources

Field Theory Expansions of String Theory Amplitudes [PDF]

open access: hybridPhysical Review Letters
Motivated by quantum field theory (QFT) considerations, we present new representations of the Euler-Beta function and tree-level string theory amplitudes using a new two-channel, local, crossing symmetric dispersion relation. Unlike standard series representations, the new ones are analytic everywhere except at the poles, sum over poles in all channels,
Arnab Priya Saha, Aninda Sinha
openalex   +5 more sources

Mean string field theory: Landau-Ginzburg theory for 1-form symmetries

open access: yesSciPost Physics, 2022
By analogy with the Landau-Ginzburg theory of ordinary zero-form symmetries, we introduce and develop a Landau-Ginzburg theory of one-form global symmetries, which we call mean string field theory.
Nabil Iqbal, John McGreevy
doaj   +1 more source

String amplitudes from Moyal string field theory [PDF]

open access: yesPhysical Review D, 2003
We illustrate a basic framework for analytic computations of Feynman graphs using the Moyal star formulation of string field theory. We present efficient methods of computation based on (a) the monoid algebra in noncommutative space and (b) the conventional Feynman rules in Fourier space.
Bars, I., Kishimoto, I., Matsuo, Y.
openaire   +3 more sources

Mapping between Witten and lightcone string field theories

open access: yesJournal of High Energy Physics, 2021
We propose a transformation between the off-shell field variables of Witten’s open bosonic string field theory and the traditional lightcone string field theory of Kaku and Kikkawa, based on Mandelstam’s interacting string picture.
Theodore Erler, Hiroaki Matsunaga
doaj   +1 more source

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