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Tensor renormalization group in bosonic field theory

Tensor renormalization group in bosonic field theory

Update: 2019-04-08
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We compute the partition function of a massive free boson in a square lattice using a tensor network algorithm. We introduce a singular value decomposition (SVD) of continuous matrices that leads to very accurate numerical results. It is shown the emergence of a CDL fixed point structure. In the massless limit, we reproduce the results of conformal field theory including a precise value of the central charge.

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Tensor renormalization group in bosonic field theory

Tensor renormalization group in bosonic field theory