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The model of dense lattice polymers is studied as an example of non-unitaryConformal Field Theory (CFT) with $c=-2$. ``Antisymmetric'' correlationfunctions of the model are proved to be given by the generalized Kirchhofftheorem. Continuous limit of the model is described by the free complexGrassmann field with null vacuum vector. The fundamental property of theGrassmann field and its twist field (both having non-positive conformalweights) is that they themselves suppress zero mode so that their correlationfunctions become non-trivial. The correlation functions of the fields withpositive conformal weights are non-zero only in the presence of the Dirichletoperator that suppresses zero mode and imposes proper boundary conditions.Comment: 5 pages, REVTeX, remark is adde

Correlation functions of dense polymers andc=-2conformal field theory