CLASSICAL SOLUTIONS IN FIELD THEORY

In recent years there has been much progress in discovering solutions to the non-linear differential equations of classical field theory. However, it would be impossible to review all the work that has been done and the intention here instead is to discuss a small, but to my mind significant, area of development taking place in Euclidean field theories. Other solutions, corresponding to Yang-Mills solitons or monopoles, will be discussed by David Olive in his lectures and will not be mentioned in detail here.

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