Abstract

Peter G 0 Freund 1986 Cambridge: Cambridge University Press x + 152 pp price £20 ISBN 0 521 26880X The success of gauge theories as a solution to the problem of interacting relativistic quantum fields, with the embarrassment of mass temporarily hidden in the Higgs mechanism, is obvious. The failure of such theories to deal with dimensional couplings such as gravity has been the spur to the development of supersymmetric theories in which the symmetry between the fermion and boson degrees of freedom leads to cancellations between some of the more embarrassing singularities.

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