Wavelet-based flow equations drive free and quadratically coupled scalar field Hamiltonians toward block diagonal form by resolution, and the coarse-resolution block reproduces the low-lying normal mode frequencies of the truncated theory.
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Hamiltonian Flow Equations in Daubechies Wavelet Basis
Wavelet-based flow equations drive free and quadratically coupled scalar field Hamiltonians toward block diagonal form by resolution, and the coarse-resolution block reproduces the low-lying normal mode frequencies of the truncated theory.