- 98-583 van Enter A. C. D., Fern\'andez R.
- Problems with the definition of renormalized Hamiltonians
for momentum-space renormalization transformations
(48K, LATeX 2e)
Sep 2, 98
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Abstract. For classical lattice systems with finite (Ising) spins,
we show that the implementation of momentum-space renormalization at
the level of Hamiltonians runs into the same type of difficulties as
found for real-space transformations: Renormalized Hamiltonians are
ill-defined in certain regions of the phase diagram.
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98-583.tex