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On the BRST Invariance of String Theory


Rey, Soo-Jong (1988) On the BRST Invariance of String Theory. Dissertation (Ph.D.), California Institute of Technology. doi:10.7907/MDK4-NY02.


Radiative corrections to string scattering amplitude generate, in general, BRST anomalies due to the massless particle tadpole, the on-shell external two-point function singularities, and the intermediate unphysical cut singularities. It is proved that they originate from the boundaries of moduli space. Unitarity, analyticity, and BRST invariance are restored only after we add appropriate local counterterms to the scattering amplitudes. We show that counterterms have physical interpretations as the Fischler-Susskind mechanism, the mass renormalization, and the contact interactions respectively.

Item Type:Thesis (Dissertation (Ph.D.))
Subject Keywords:String theory, path integral, BRST, anomaly, divergence
Degree Grantor:California Institute of Technology
Division:Physics, Mathematics and Astronomy
Major Option:Physics
Thesis Availability:Public (worldwide access)
Research Advisor(s):
  • Wise, Mark B.
Group:Caltech Theory
Thesis Committee:
  • Wise, Mark B. (chair)
  • Gell-Mann, Murray
  • Politzer, Hugh David
  • Porter, Frank C.
  • Schwarz, John H.
Defense Date:2 May 1988
Record Number:CaltechETD:etd-01052005-142036
Persistent URL:
Default Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:31
Deposited By: Imported from ETD-db
Deposited On:05 Jan 2005
Last Modified:07 Feb 2020 00:27

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