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7 papers · 1 filter
A numerical method to calculate the muon relaxation function in the presence of diffusion
Giuseppe Allodi, Roberto De Renzi
We present an accurate and efficient method to calculate the effect of random fluctuations of the local field at the muon, for instance in the case muon diffusion, within the frame…
Unconventional quantum phases of lattice bosonic mixtures
P. Buonsante, S. M. Giampaolo, F. Illuminati +2
We consider strongly interacting boson-boson mixtures on one-dimensional lattices and, by adopting a qualitative mean-field approach, investigate their quantum phases as the inters…
Mixtures of strongly interacting bosons in optical lattices
P. Buonsante, S. M. Giampaolo, F. Illuminati +2
We investigate the properties of strongly interacting heteronuclear boson-boson mixtures loaded in realistic optical lattices, with particular emphasis on the physics of interfaces…
Ground-State Fidelity and Bipartite Entanglement in the Bose-Hubbard Model
Pierfrancesco Buonsante, Alessandro Vezzani
We analyze the quantum phase transition in the Bose-Hubbard model borrowing two tools from quantum-information theory, i.e. the ground-state fidelity and entanglement measures. We…
Optimal network topologies: Expanders, Cages, Ramanujan graphs, Entangled networks and all that
Luca Donetti, Franco Neri, Miguel A. Munoz
We report on some recent developments in the search for optimal network topologies. First we review some basic concepts on spectral graph theory, including adjacency and Laplacian…
A perturbative approach to J mixing in f-electron systems: Application to actinide dioxides
N. Magnani, P. Santini, G. Amoretti +1
We present a perturbative model for crystal-field calculations, which keeps into account the possible mixing of states labelled by different quantum number J. Analytical J-mixing r…