ENGLISH

Covariant perturbation theory III. Spectral representations (Nucl.Phys.B 333)

Book information

Year
1990
Language
english
Format
DJVU
Filesize
96 kB (98086 bytes)
Pages
13\13
Topic
Physics
Library
kolxoz
Time added
2009-07-20 03:45:11

Description

Extension of covariant perturbation theory to third order in curvature requires the triple- spectral forms for one-loop vertex functions of massless fields to be established. For the simplest triangular graph with unit vertices the three spectral masses are known to form a triangle, and the spectral weight is 1/4πS where S is the area of this triangle. We generalize this result to an arbitrary derivative coupling.

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