Homotopic Classification of Yang–Mills Vacua Taking into Account Causality
نویسندگان
چکیده
منابع مشابه
Homotopic Classification of Yang–Mills Vacua Taking into Account Causality
In this letter we study the existence of θ-vacuum states in Yang–Mills theories defined over asymptotically flat, stationary space-times taking into account not only the topology but the complicated causal structure of these space-times, too. By a result of Chruściel and Wald, apparently causality makes all vacuum states, seen by a distant observer, homotopically equivalent making the introduct...
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ژورنال
عنوان ژورنال: International Journal of Theoretical Physics
سال: 2007
ISSN: 0020-7748,1572-9575
DOI: 10.1007/s10773-006-9243-8