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Evidence for a floating phase of the transverse ANNNI model at high frustration
Matteo Beccaria, Massimo Campostrini, Alessandra Feo
We study the transverse quantum ANNNI model in the region of high frustration (k>0.5) using the DMRG algorithm. We obtain a precise determination of the phase diagram, showing clea…
Density Matrix Renormalization Group Study of the Disorder Line in the Quantum ANNNI Model
Matteo Beccaria, Massimo Campostrini, Alessandra Feo
We apply Density Matrix Renormalization Group methods to study the phase diagram of the quantum ANNNI model in the region of low frustration where the ferromagnetic coupling is lar…
Critical behavior in a non-local interface model
Matteo Beccaria, Massimo Campostrini, Alessandra Feo
The Raise and Peel model is a recently proposed one-dimensional statistical model describing a fluctuating interface. The evolution of the model follows from the competition betwee…