The soliton of the effective chiral action in a heat-kernel expansion

Authors

  • B. Kämpfer,

    1. Joint Institute for Nuclear Research Dubna
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    • Zentralinstitut für Kernforschung Rossendorf, PF 19, O-8051-Dresden, Germany.

  • H. Reinhardt

    1. Joint Institute for Nuclear Research Dubna
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    • Institut für Theoretische Physik, Universität Tübingen, Auf der Morgenstelle 14, W-7400 Tübingen, Germany.


Abstract

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 effective chiral lagrangian is found numerically.

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