The phase transitions of random-field q-state Potts models in d=3 dimensions are studied by renormalization-group theory exact solution a hierarchical lattice and, equivalently, approximate Migdal-Kadanoff solutions cubic lattice. recursion, under rescaling, coupled and random-bond (induced rescaling random fields) probability distributions is followed to obtain diagrams. Unlike the Ising model...

We derive in a straightforward way the exact controllability of the 1-D Schrödinger equation with a Dirichlet boundary control. We use the so-called flatness approach, which consists in parameterizing the solution and the control by the derivatives of a “flat output”. This provides an explicit control input achieving the exact controllability in the energy space. As an application, we derive an...

This artic!e considers a posteriori error estimation of specified functionals for first-order systems of conservation laws discretized using the discontinuous Galerkin (DG) finite element method. Using duality techniques, we derive exact error representation formulas for both linear and nonlinear functionals given an associated bilinear or nonlinear variational form. _Veighted residual approxim...

The explicit biorthogonalization method, developed in [arXiv:1701.00018] for continuous time TASEP, is generalized to a broad class of determinantal measures which describe the evolution several interacting particle systems KPZ universality class. method applied sequential and parallel update versions each four variants discrete TASEP (with Bernoulli geometric jumps, with block push dynamics) h...