Do non-gaussian effects decrease tunneling probabilities? three-loop instanton density for the double-well potential

@article{Olejnk1989DoNE,
  title={Do non-gaussian effects decrease tunneling probabilities? three-loop instanton density for the double-well potential},
  author={{\vS}tefan Olejnı́k},
  journal={Physics Letters B},
  year={1989},
  volume={221},
  pages={372-376}
}
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