Coupling Constant - String Theory

String Theory

A remarkably different situation exists in string theory. Each perturbative description of string theory depends on a string coupling constant. However, in the case of string theory, these coupling constants are not pre-determined, adjustable, or universal parameters; rather they are dynamical scalar fields that can depend on the position in space and time and whose values are determined dynamically.

Quantum field theory
Feynman diagram
History
Background
  • Field theory
  • Gauge theory
  • Poincaré symmetry
  • Quantum mechanics
  • Spontaneous symmetry breaking
Symmetries
  • Charge conjugation
  • Crossing
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Tools
  • Anomaly
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  • Feynman diagram
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  • Partition function
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Equations
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