{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,4,1]],"date-time":"2026-04-01T14:20:20Z","timestamp":1775053220277,"version":"3.50.1"},"reference-count":0,"publisher":"World Scientific Pub Co Pte Lt","issue":"23","content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Int. J. Mod. Phys. A"],"published-print":{"date-parts":[[1991,9,30]]},"abstract":"<jats:p> We describe the dynamics of euclideanized SO(4)-symmetric Einstein-Yang-Mills (EYM) systems with arbitrary compact gauge groups [Formula: see text]. For the case of SO(n) and SU(n) gauge groups and simple embeddings of the isotropy group in [Formula: see text], we show that in the resulting dynamical system, the Friedmann equation decouples from the Yang-Mills equations. Furthermore, the latter can be reduced to a system of two second-order differential equations. This allows us to find a broad class of instanton (wormhole) solutions of the EYM equations. These solutions are not afflicted by the giant-wormhole catastrophe. <\/jats:p>","DOI":"10.1142\/s0217751x91002045","type":"journal-article","created":{"date-parts":[[2004,11,25]],"date-time":"2004-11-25T12:12:21Z","timestamp":1101384741000},"page":"4149-4180","source":"Crossref","is-referenced-by-count":47,"title":["DYNAMICS OF EUCLIDEANIZED EINSTEIN-YANG-MILLS SYSTEMS WITH ARBITRARY GAUGE GROUPS"],"prefix":"10.1142","volume":"06","author":[{"given":"O.","family":"BERTOLAMI","sequence":"first","affiliation":[{"name":"Centro de F\u00edsica da Mat\u00e9ria Condensada, Av. Prof. Gama Pinto 2, 1699 Lisboa Codex, Portugal"}]},{"given":"J.M.","family":"MOUR\u00c3O","sequence":"additional","affiliation":[{"name":"Centro de F\u00edsica Nuclear, Av. Prof. Gama Pinto 2, 1699 Lisboa Codex, Portugal"},{"name":"Departamento de F\u00edsica, Instituto Superior T\u00e9cnico, Av. Rovisco Pais, 1000 Lisboa, Portugal"}]},{"given":"R.F.","family":"PICKEN","sequence":"additional","affiliation":[{"name":"Centro de F\u00edsica da Mat\u00e9ria Condensada, Av. Prof. Gama Pinto 2, 1699 Lisboa Codex, Portugal"},{"name":"Departamento de Matem\u00e1tica, Instituto Superior T\u00e9cnico, Av. Rovisco Pais, 1000 Lisboa, Portugal"}]},{"given":"I.P.","family":"VOLOBUJEV","sequence":"additional","affiliation":[{"name":"Nuclear Physics Institute, Moscow State University, Moscow 119899, USSR"}]}],"member":"219","published-online":{"date-parts":[[2012,4,6]]},"container-title":["International Journal of Modern Physics A"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/www.worldscientific.com\/doi\/pdf\/10.1142\/S0217751X91002045","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2019,8,7]],"date-time":"2019-08-07T16:47:18Z","timestamp":1565196438000},"score":1,"resource":{"primary":{"URL":"https:\/\/www.worldscientific.com\/doi\/abs\/10.1142\/S0217751X91002045"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[1991,9,30]]},"references-count":0,"journal-issue":{"issue":"23","published-online":{"date-parts":[[2012,4,6]]},"published-print":{"date-parts":[[1991,9,30]]}},"alternative-id":["10.1142\/S0217751X91002045"],"URL":"https:\/\/doi.org\/10.1142\/s0217751x91002045","relation":{},"ISSN":["0217-751X","1793-656X"],"issn-type":[{"value":"0217-751X","type":"print"},{"value":"1793-656X","type":"electronic"}],"subject":[],"published":{"date-parts":[[1991,9,30]]}}}