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- P. L. Krapivsky, Sidney Redner, François Leyvraz
- Physical review letters
- 2000

A solution for the time- and age-dependent connectivity distribution of a growing random network is presented. The network is built by adding sites that link to earlier sites with a probability A(k)… (More)

- Carlos Mejía-Monasterio, Hernán Larralde, François Leyvraz
- Physical review letters
- 2001

We introduce the first simple mechanical system that shows fully realistic transport behavior while still being exactly solvable at the level of equilibrium statistical mechanics. The system is a… (More)

The two-point correlation functions of energy levels for free motion on the modular domain, both with periodic and Dirichlet boundary conditions, are explicitly computed using a generalization of the… (More)

- François Leyvraz
- 2005

The kinetic equations describing irreversible aggregation and the scaling approach developed to describe them in the limit of large times and large sizes are tersely reviewed. Next, a system is… (More)

- Aurelio Ramírez-Hernández, Hernán Larralde, François Leyvraz
- Physical review letters
- 2008

We show that systems with negative specific heat can violate the zeroth law of thermodynamics. By both numerical simulations and by using exact expressions for free energy and microcanonical entropy,… (More)

- Heiner Kohler, Igor E. Smolyarenko, Cristóbal Fernández Pineda, Thomas Guhr, François Leyvraz, Thomas H. Seligman
- Physical review letters
- 2008

Relations among fidelity, cross-form-factor (i.e., parametric level correlations), and level velocity correlations are found both by deriving a Ward identity in a two-matrix model and by comparing… (More)

A compound tunneling mechanism from one integrable region to another mediated by a delocalized state in an intermediate chaotic region of phase space was recently introduced to explain peculiar… (More)

- Hernán Larralde, François Leyvraz
- Physical review letters
- 2005

We present a definition for metastable states applicable to arbitrary finite state Markov processes satisfying detailed balance. In particular, we identify a crucial condition that distinguishes… (More)

- François Leyvraz, Walter Dieter Heiss
- Physical review letters
- 2005

We introduce a novel semiclassical approach to the Lipkin model. In this way the well-known phase transition arising at the critical value of the coupling is intuitively understood. New… (More)

- Rudi Schäfer, Marcus Barth, François Leyvraz, Markus Thomas Müller, Thomas H. Seligman, H-J Stöckmann
- Physical review. E, Statistical, nonlinear, and…
- 2002

Recently it has been shown that time-reversal invariant systems with discrete symmetries may display, in certain irreducible subspaces, spectral statistics corresponding to the Gaussian-unitary… (More)