Solvable Rectangle Triangle Random Tilings

We show that a rectangle triangle random tiling with a tenfold symmetric phase is solvable by Bethe Ansatz. After the twelvefold square triangle and the eightfold rectangle triangle random tiling, this is the third example of a rectangle triangle tiling which is solvable. A Bethe Ansatz solution provides in principle an accurate estimate of the entropy and phason elastic constants. In the twelvefold and eightfold cases even exact analytic expressions have been obtained from the Bethe Ansatz solution.

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