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- C . - K . Peng, Sergey V. Buldyrev, +4 authors H. Eugene Stanley
- Nature
- 1992

DNA sequences have been analysed using models, such as an n-step Markov chain, that incorporate the possibility of short-range nucleotide correlations. We propose here a method for studying the stochastic properties of nucleotide sequences by constructing a 1:1 map of the nucleotide sequence onto a walk, which we term a 'DNA walk'. We then use the mapping… (More)

- Stefano Mossa, Francesco Sciortino, Piero Tartaglia, Emanuela Zaccarelli
- Langmuir : the ACS journal of surfaces and…
- 2004

We report calculations of the ground-state energies and geometries for clusters of different sizes (up to 80 particles), where individual particles interact simultaneously via a short-ranged attractive potential, modeled with a generalization of the Lennard-Jones potential, and a long-ranged repulsive Yukawa potential. We show that for specific choices of… (More)

- Ivan Saika-Voivod, Francesco Sciortino, Peter H. Poole
- Physical review. E, Statistical, nonlinear, and…
- 2001

We conduct extensive molecular dynamics computer simulations of two models for liquid silica [the model of Woodcock, Angell and Cheeseman, J. Phys. Chem. 65, 1565 (1976); and that of van Beest, Kramer, and van Santen, Phys. Rev. Lett. 64, 1955 (1990)] to determine their thermodynamic properties at low temperature T across a wide density range. We find for… (More)

- C . - K . Peng, Sergey V. Buldyrev, +4 authors H. Eugene Stanley
- Physica A
- 1992

By mapping nucleotide sequences onto a "DNA walk", we uncovered remarkably long-range power law correlations [Nature 356 (1992) 168] that imply a new scale invariant property of DNA. We found such long-range correlations in intron-containing genes and in non-transcribed regulatory DNA sequences, but not in cDNA sequences or intron-less genes. In this… (More)

Srikanth Sastry,* Pablo G. Debenedetti, Francesco Sciortino, and H. E. Stanley Physical Sciences Laboratory, Division of Computer Research and Technology, National Institutes of Health, Bethesda, Maryland 20952 Department of Chemical Engineering, Princeton University, Princeton, New Jersey 08544 Dipartimento di Fisica, Universitá di Roma La Sapienza and… (More)

- Francesco Sciortino, Stefano Mossa, Emanuela Zaccarelli, Piero Tartaglia
- Physical review letters
- 2004

We study a model in which particles interact with short-ranged attractive and long-ranged repulsive interactions, in an attempt to model the equilibrium cluster phase recently discovered in sterically stabilized colloidal systems in the presence of depletion interactions. At low packing fractions, particles form stable equilibrium clusters which act as… (More)

- Emanuela M Bianchi, Julio Largo, Piero Tartaglia, Emanuela Zaccarelli, Francesco Sciortino
- Physical review letters
- 2006

We report theoretical and numerical evaluations of the phase diagram for patchy colloidal particles of new generation. We show that the reduction of the number of bonded nearest neighbors offers the possibility of generating liquid states (i.e., states with temperature T lower than the liquid-gas critical temperature) with a vanishing occupied packing… (More)

- H. Eugene Stanley, Sergey V. Buldyrev, +6 authors Mark Simons
- Physica A
- 1992

Here we discuss recent advances in applying ideas of fractals and disordered systems to two topics of biological interest, both topics having common the appearance of scale-free phenomena, i.e., correlations that have no characteristic length scale, typically exhibited by physical systems near a critical point and dynamical systems far from equilibrium. … (More)

- Giuseppe Foffi, Cristiano De Michele, Francesco Sciortino, Piero Tartaglia
- The Journal of chemical physics
- 2005

We numerically investigate the competition between phase separation and dynamical arrest in a colloidal system interacting via a short-ranged attractive potential. Equilibrium fluid configurations are quenched at two different temperatures below the critical temperature and followed during their time evolution. At the lowest studied T, the phase-separation… (More)

We present an overview of the recent studies on the properties of the potential energy surface for a simple model of water. We emphasize the relations between PES properties and dynamics in supercooled states for the model and discuss possible future application of the PES studies. PACS. 61.43.Fs Glasses – 64.70.Pf Glass transitions – 66.10.Cb Diffusion and… (More)