The wave function and the effective action in quantum cosmology: Covariant loop expansion
β Scribed by A.O. Barvinsky
- Book ID
- 113351918
- Publisher
- Elsevier Science
- Year
- 1987
- Tongue
- English
- Weight
- 388 KB
- Volume
- 195
- Category
- Article
- ISSN
- 0370-2693
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π SIMILAR VOLUMES
The optimized expansion for the effective action in quantum field theory is discussed to second order. As an example we use the scalar quantum field theory with \(\lambda \phi^{4}\) interaction in one-dimensional space-time, which is equivalent to quantum mechanics of the anharmonic ascillator. The
It is shown that the heat-kernel expansion (rather than the gradient expansion) of the effective chiral action of the quark loop yields in next-to-leading (i. e., fourth) order an effective low-energy lagrangian which possesses stable soliton solutions. The baryon number-one soliton solution of this