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Nuclear Physics B
The Replica Fourier Transform is the generalization of the discrete Fourier Transform to quantities defined on an ultrametric tree. It finds use in con- junction of the replica method used to study thermodynamics properties of disordered systems such as spin glasses. Its definition is presented in a system- atic and simple form and its use illustrated with some representative examples. In particular we give a detailed discussion of the diagonalization in the Replica Fourier Space of the Hessiandoi:10.1016/j.nuclphysb.2014.12.002 fatcat:ysmkqlwb5bdhlc2lwff3hrr6rq