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Additional
Faddeev–Popov ghost
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Faddeev–Popov ghost
In
physics
,
Faddeev–Popov ghosts
(also called
gauge ghosts
or
ghost fields
) are additional
fields
which are introduced into
gauge
quantum field theories
to maintain the consistency of the
path integral formulation
. They are named after
Ludvig Faddeev
and
Victor Popov
.
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