✦ LIBER ✦

Energy-momentum tensor of a massless scalar quantum field in a Robertson-Walker universe: P. C. W. Davies, S. A. Fulling, S. M. Christensen, and T. S. Bunch, Department of Mathematics, University of London King's College, Strand, London WC2R 2LS, England

Publisher: Elsevier Science
Year: 1977
Tongue: English
Weight: 84 KB
Volume: 108
Category: Article
ISSN: 0003-4916
DOI: 10.1016/0003-4916(77)90024-0

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✦ Synopsis

Scattering and absorption of pions by a nuclear target are treated together in a coupled channel theory. The theory is developed explicitly for the problem of pion scattering and absorption by a deuteron. The equations are presented in terms of the integral equations of three-body scattering theory. The method is then applied in an approximate form to calculate the contribution of pion absorption to the scattering length for pion-deuteron scattering. The sensitivity of the calculated results to the model assumptions and approximations is investigated. 477