Nonperturbative methods for calculating the heat kernel

  • Ivan G. Avramidi
  • Published 1996


We study the low-energy approximation for calculation of the heat kernel which is determined by the strong slowly varying background fields in strongly curved quasi-homogeneous manifolds. A new covariant algebraic approach, based on taking into account a finite number of low-order covariant derivatives of the background fields and neglecting all covariant… (More)


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