Derivative expansion of the heat kernel at finite temperature
✍ Scribed by Moral-Gámez, F.; Salcedo, L.
- Book ID
- 111689268
- Publisher
- The American Physical Society
- Year
- 2012
- Tongue
- English
- Weight
- 343 KB
- Volume
- 85
- Category
- Article
- ISSN
- 1550-7998
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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
## Abstract A method is given for obtaining diagram expansions at finite temperatures in domains for real times and frequencies. As an example the diagram expansions for electrons (in the ordinary electron gas approximation) and phonons are discussed. Network rules are established to obtain all kin