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We derived exact background equations for the bosonic chiral string, offering a new method to calculate string theory corrections in curved spacetime. This approach simplifies computations and provides insights into massive resonances.

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Area of Science:

  • Theoretical Physics
  • String Theory
  • High Energy Physics

Background:

  • The bosonic chiral string, or Hohm-Siegel-Zwiebach model, is a key area of study in theoretical physics.
  • Understanding corrections in curved spacetime is crucial for advancing string theory.
  • Previous models lacked complete determination of all corrections in generic curved spacetimes.

Purpose of the Study:

  • To present the α′-exact background equations of motion for the bosonic chiral string.
  • To integrate out spin-two ghost fields for a simplified model.
  • To establish a method for fully determining all corrections in generic curved spacetimes.

Main Methods:

  • Derivation of α′-exact background equations of motion.
  • Integration of spin-two ghost fields.
  • Comparison of scattering amplitudes computed via field theory and the chiral string prescription.

Main Results:

  • The first world sheet model with fully determined corrections in generic curved spacetime.
  • Complete agreement between field theory and chiral string methods for three-point and sample four-point tree-level scattering amplitudes.
  • Validation of the derived equations of motion.

Conclusions:

  • The derived equations offer a field theoretical shortcut for computing world sheet correlators in bosonic strings.
  • This work provides a new perspective on massive resonances in string theory.
  • The findings facilitate calculations involving arbitrary numbers of massless and mass-level-one states.