Abstract
The superliquid 3He is shown to be a wide field of application for many recently developed methods in particle physics and field theory: 1) There is a transformation from fundamental to collective fields via path integral techniques just as exists from Thirring to Sine-Gordon fields and as one would like to find from quarks to hadrons. 2) There are many classical field configurations, monopoles, strings, and solitons, which all can he produced and investigated in the laboratory. 3) Topological quantum numbers are helpful in classifying the stable field configurations. Such applications to realistic situations in other branches of physics, apart from being useful in themselves, may extend our intuition and help us finding new methods and approximation procedures.
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