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Quantum Field Theory in a Semiotic Perspective (Paperback, 2005 ed.)
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Quantum Field Theory in a Semiotic Perspective (Paperback, 2005 ed.)
Series: Schriften der Mathematisch-naturwissenschaftlichen Klasse, 17
Expected to ship within 10 - 15 working days
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In this essay we discuss epistemological implications of
relativistic quantum field theory. The empirical domain of such a
theory is formed by phenomena ascribed to subnuclear particles,
sometimes still called elementary particles. This latter more
traditional design at ionrejects the lasting desire of physicists
to eventually second and isolate irreducible constituents of
matter. Going down to the atomic level, electrons appear to play
such a role, whereas the nuclei of atoms can be considered as
compound systems of protons and neutrons, i. e. of two species of
particles. This view makes sense, since the respective number of
these two types of constituents essentially identifies an atomic
nucleus. Extracted from a nucleus, however, the 'free' neutron is
an unstable particle: it decays spontaneously into a proton, an
electron and an anti-neutrino. In the past fifty years or so
basically the bombardment of matter by protons or by electrons in
specially devised experiments has revealed a large variety of
further subnuclear objects. Successive generations of accelerators
and refined collision devices provided higher and higher collision
energies. All theses- nuclear objects are termed 'particles' in the
physics community, nearly all of these objects are unstable and
decay spontaneously into other ones. The respective lifetimes of
the distinct types, however, differ widely, ranging from 3 - 25
relatively long(10 sec) to extremely short(10 sec). Because of this
huge disparity in lifetime the notion of a particle deserves
particular attention, a point laid stress on in our consideration.
The study of the physical behaviour of these subnuclear particles
led to distinguish three types of interactions: the strong, the
electromagnetic and the weak interaction. As the names suggest
these interactions differ in their respective strength.
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