19 citations · 41 across the 5 of their papers we have counts for
8 papers
Mott transition in lattice boson models
Roberto Fernandez, Juerg Froehlich, Daniel Ueltschi
We use mathematically rigorous perturbation theory to study the transition between the Mott insulator and the conjectured Bose-Einstein condensate in a hard-core Bose-Hubbard model…
Spatial birth-and-death processes in random environment
Roberto Fernandez, Pablo A. Ferrari, Gustavo R. Guerberoff
We consider birth-and-death processes of objects (animals) defined in having unit death rates and random birth rates. For animals with uniformly bounded diameter we est…
Construction of a specification from its singleton part
Roberto Fernandez, Gregory Maillard
We state a construction theorem for specifications starting from single-site conditional probabilities (singleton part). We consider general single-site spaces and kernels that are…
Chains with complete connections: General theory, uniqueness, loss of memory and mixing properties
Roberto Fernandez, Gregory Maillard
We introduce an statistical mechanical formalism for the study of discrete-time stochastic processes with which we prove: (i) General properties of extremal chains, including trivi…
Chains with complete connections and one-dimensional Gibbs measures
Roberto Fernandez, Gregory Maillard
We discuss the relationship between discrete-time processes (chains) and one-dimensional Gibbs measures. We consider finite-alphabet (finite-spin) systems, possibly with a grammar…
Variational principle and almost quasilocality for some renormalized measures
Roberto Fernandez, Arnaud Le Ny, Frank Redig
We restore part of the thermodynamic formalism for some renormalized measures that are known to be non-Gibbsian. We first point out that a recent theory due to Pfister implies that…