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Negative specific heat in a Lennard-Jones-like gas with long-range interactions
(2002-03)
We study, through molecular dynamics, a conservative two-dimensional Lennard-Jones-like gas (with attractive potential ∝r−α). We consider the effect of the range index α of interactions, number of particles, total energy ...
Tsallis scaling in the long-range Ising chain with competitive interactions
(Sociedade Brasileira de F??sica, 2009-08)
On the non-Boltzmannian nature of quasi-stationary states in long-range interacting systems
(2007)
We discuss the non-Boltzmannian nature of quasi-stationary states in the Hamiltonian mean field (HMF) model, a paradigmatic model for long-range interacting classical many-body systems. We present a theorem excluding the ...
Long-range interactions in antiferromagnetic quantum spin chains
(American Physical Society, 2017-08)
We study the role of long-range dipolar interactions on antiferromagnetic spin chains, from the classical S→ limit to the deep quantum case S=1/2, including a transverse magnetic field. To this end, we combine different ...
Tsallis scaling in the long-range Ising chain with competitive interactions
(Sociedade Brasileira de Física, 2009-08)
A numerically efficient transfer matrix approach is used to investigate the validity of the Tsallis scaling hypothesis in the long-range Ising spin chain with competitive interactions. In this model, the interaction between ...
Taylor's power law for ecological communities: an explanation on nonextensive/nonlinear statistical grounds
(2014)
A new idea on how to conceptually interpret the so-called Taylor’s power law for ecological communities is presented. The core of our approach is based on nonextensive/nonlinear statistical concepts, which are shown to be ...