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Prog. Theor. Phys. Vol. 79 No. 4 (1988) pp. 876-898

[ Full Text PDF : FREE ACCESS (1278K) ]

Interaction between Two Quark Layers in Chiral Bag Model

Ryozo Tamagaki and Toshitaka Tatsumi

Department of Physics, Kyoto University, Kyoto 606

(Received January 11, 1988)

Abstract:

To have an insight into the interaction between confined quark systems with surrounding pion fields, we study a schematic model exactly solvable from the chiral bag viewpoint, where two layers composed of u, d quarks with a specific spin-flavor order are placed parallel with each other and the chiral fields (σ, π0) described in the σ-model exist between two layers and outside them. As two layers approach closely, the chiral angles between and outside the layers change drastically from those for the isolated situation, mainly due to the axial-vector current conservation. Noticeable attractive (repulsive) effects appear when the relative spin-flavor orientation of two layers is opposite (same) and the chiral angles are symmetric (antisymmetric) about the center of the system. Close approach of two layers with the most favorable spin-flavor combination results in the total energy gain of the order of several tens MeV per baryon, compared with the distant limit. These aspects indicate essentially nonperturbative nature of the interaction between chiral layers. Effects from change of quark spin-flavor coherence, comparison with a perturbative treatment and so forth are also discussed.


URL : http://ptp.ipap.jp/link?PTP/79/876/
DOI : 10.1143/PTP.79.876

[ Full Text PDF : FREE ACCESS (1278K) ] Citation:

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Citing Article(s) :

  1. Progress of Theoretical Physics Vol. 84 No. 1 (1990) pp. 44-49 :
    Static Interaction between Two Spherical Chiral Bags
    Shin-ichi Nawa, Ryozo Tamagaki, Toshitaka Tatsumi and Shin-ichi Yoro
  2. Progress of Theoretical Physics Vol. 84 No. 6 (1990) pp. 1170-1187 :
    A Chiral-Bag Approach to Static Interaction between Two Baryons
    Shin-ichi Nawa, Ryozo Tamagaki, Toshitaka Tatsumi and Shin-ichi Yoro
  3. Progress of Theoretical Physics Supplement No.112 (1993) pp. 1-25 :
    Chapter I. Overview
    Ryozo Tamagaki
  4. Progress of Theoretical Physics Supplement No.112 (1993) pp. 277-305 :
    Chapter IX. A Way to Quark Matter
    Ryozo Tamagaki and Toshitaka Tatsumi

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