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Comments on open string with 'massive' boundary term.

Arkady A Tseytlin1

  • 1Blackett Laboratory, Imperial College, London SW7 2AZ, UK.

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PubMed
Summary
This summary is machine-generated.

This study defines open string path integrals with boundary mass couplings. Integrating over boundary metrics is necessary due to non-conformal invariance, impacting scattering amplitudes.

Keywords:
background fieldmassive endsopen string

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Area of Science:

  • Theoretical Physics
  • String Theory
  • Quantum Field Theory

Background:

  • Open string theory describes fundamental interactions.
  • Boundary conditions significantly influence string behavior.
  • Conformal invariance is a key principle in string theory.

Purpose of the Study:

  • To define open string path integrals with boundary mass couplings.
  • To investigate the implications of non-conformal invariance at the string boundary.
  • To compute partition functions and analyze scattering amplitudes.

Main Methods:

  • Formulating path integrals for open strings with specific boundary conditions.
  • Integrating over the one-dimensional metric of the boundary.
  • Calculating partition functions in the presence of gauge field backgrounds.

Main Results:

  • A definition for open string path integrals with mass at string endpoints is proposed.
  • Non-conformal invariance necessitates integration over boundary reparametrizations.
  • The partition function on a disc with gauge fields is computed.

Conclusions:

  • The inclusion of boundary mass couplings requires a modified path integral approach.
  • The framework provides insights into the structure of scattering amplitudes in such systems.