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PVX

PVX[r,n1,n2,,s01,s12,s23,,m0,m1,m2,]
is the general Passarino-Veltman coefficient function .

Details and OptionsDetails and Options

  • PVX[r,n1,n2,,s01,s12,s23,,m0,m1,m2,] is the symbolic form of the coefficient function multiplying the symmetrized tensor generated by LoopIntegrate.
  • PVX[r,n1,n2,,s01,s12,s23,,m0,m1,m2,] implicitly depends on the number of spacetime dimensions .
  • PVX does not directly evaluate, nor does LoopRefine substitute it with its explicit expression.
  • The arguments of PVX representing an -point coefficient coefficient function are as follows: the first arguments are integers, and specify the indices; the next arguments are external momentum invariants; the last arguments are internal masses.
  • For point coefficient functions, PVX is automatically replaced with PVA, PVB, PVC or PVD.

ExamplesExamplesopen allclose all

Basic Examples  (3)Basic Examples  (3)

A 5-point integral:

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A 6-point coefficient function:

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A 3-point coefficient function:

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