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20022009
most citedDark torsion as the cosmic speed-up

1.2k citations

Showing 2004Show all

11 papers · 1 filter

cond-mat.dis-nn2004

Quantum Magnets with Anisotropic Infinite Range Random Interactions

Liliana Arrachea, Marcelo J. Rozenberg

Using exact diagonalization techniques we study the dynamical response of the anisotropic disordered Heisenberg model for systems of S=1/2 spins with infinite range random exchange…

hep-th2004

Onset of classical behaviour after a phase transition

R. J. Rivers, F. C. Lombardo

We analyze the onset of classical behaviour in a scalar field after a continuous phase transition, in which the system-field, the long wavelength order parameter of the model, inte…

physics.optics20046 cited

On Onsager Relations and Linear Electromagnetic Materials

A. Lakhtakia, R. A. Depine

We investigated the Onsager relations in the context of electromagnetic constitutive relations of linear, homogeneous materials. We determined that application of the Onsager relat…

cond-mat.dis-nn2004

Diversity-induced synchronized oscillations in close-to-threshold excitable elements arranged on regular networks: effects of network topology

I. Vragović, E. Louis, C. D. E. Boschi +1

The question of how network topology influences emergent synchronized oscillations in excitable media is addressed. Coupled van der Pol-FitzHugh-Nagumo elements arranged either on…

q-bio.NC2004

A subjective distance between stimuli: quantifying the metric structure of representations

D. Oliva, I. Samengo, S. Leutgeb +1

As subjects perceive the sensory world, different stimuli elicit a number of neural representations. Here, a subjective distance between stimuli is defined, measuring the degree of…

math.NT2004

Fast computation of a rational point of a variety over a finite field

Antonio Cafure, Guillermo Matera

We exhibit a probabilistic algorithm which computes a rational point of an absolutely irreducible variety over a finite field defined by a reduced regular sequence. Its time--space…