New instanton and meron solutions of a generally covariant four-dimensional sigma model |
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| Authors: | M. Vişinescu |
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| Affiliation: | 1. Department of Fundamental Physics, Institute for Physics and Nuclear Engineering, Magurele, P.O. Box MG6, Bucharest, Romania
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| Abstract: | We construct new solutions of the fourdimensional sigma model coupled to the metric tensor field and having an internalO invariance. Our solutions interpolate continuously between the known instanton and meron solutions depending upon a parameterf. We find that the typical domain for the instantons is 2<f≦3 while for the merons is 0≦f≦2. |
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