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SchoutenCC

SchoutenCC
is a reserved word in xTras. It is used to generate the name of the cosmological Schouten curvature tensor associated to a connection acting on a tangent bundle.
  • The cosmological Schouten tensor is the usual Schouten tensor plus a term proportional to the cosmological constant, such that it vanishes solutions to the equation of motion.
  • The name of the cosmological Schouten tensor is "SchoutenCC + name of covariant derivative".
  • The cosmological Schouten tensor has three indices; the first is a label index for the value of the cosmological constant, the last two are the usual tangent bundle indices.