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- Stefano Ruffo

International School for Advanced Studies

Italy

- Quantum mechanics
- Mathematical analysis
- Condensed matter physics

His main research concerns Statistical physics, Hamiltonian, Classical mechanics, Equipartition theorem and Quantum mechanics. His work carried out in the field of Statistical physics brings together such families of science as Canonical ensemble, Microcanonical ensemble and Vlasov equation. His study in Microcanonical ensemble is interdisciplinary in nature, drawing from both Range, Ising model, Ergodicity, Partition function and Specific heat.

His Hamiltonian research is multidisciplinary, incorporating perspectives in Exponential function, Mean field theory, Power law and Electronic band structure. His work in Classical mechanics addresses issues such as Phase transition, which are connected to fields such as Non-equilibrium thermodynamics, Order, Instability and Solid-state physics. The concepts of his Equipartition theorem study are interwoven with issues in Chaotic, Fermi–Pasta–Ulam problem, Nonlinear system and Hamiltonian system.

- Statistical mechanics and dynamics of solvable models with long-range interactions (627 citations)
- Clustering and relaxation in Hamiltonian long-range dynamics (396 citations)
- Inequivalence of Ensembles in a System with Long-Range Interactions (233 citations)

Stefano Ruffo mainly focuses on Statistical physics, Hamiltonian, Quantum mechanics, Mean field theory and Phase transition. His work carried out in the field of Statistical physics brings together such families of science as Canonical ensemble, Microcanonical ensemble and Classical mechanics. Within one scientific family, Stefano Ruffo focuses on topics pertaining to Vlasov equation under Hamiltonian, and may sometimes address concerns connected to Distribution function.

His work in Quantum mechanics covers topics such as Lattice which are related to areas like Fourier transform, Instability, Anharmonicity and Wavenumber. He usually deals with Mean field theory and limits it to topics linked to Lyapunov exponent and Lyapunov function, Random matrix and Mathematical analysis. He studied Phase transition and Stationary state that intersect with Conserved quantity.

- Statistical physics (50.27%)
- Hamiltonian (27.99%)
- Quantum mechanics (26.90%)

- Statistical physics (50.27%)
- Canonical ensemble (16.30%)
- Phase transition (27.99%)

His scientific interests lie mostly in Statistical physics, Canonical ensemble, Phase transition, Phase diagram and Mathematical physics. His work on Thermodynamic limit as part of general Statistical physics study is frequently linked to Kuramoto model, therefore connecting diverse disciplines of science. Microcanonical ensemble is the focus of his Canonical ensemble research.

His research on Phase diagram also deals with topics like

- Critical point together with Probability and statistics,
- Range most often made with reference to Ising model. His Mathematical physics study integrates concerns from other disciplines, such as Fermi Gamma-ray Space Telescope, Harmonic and Sigma. His studies in Stationary state integrate themes in fields like Hamiltonian, Mean field theory and Classical mechanics.

- Kuramoto model of synchronization: equilibrium and nonequilibrium aspects (124 citations)
- Physics of Long-Range Interacting Systems (88 citations)
- Criticality and phase diagram of quantum long-range O( N ) models (42 citations)

- Quantum mechanics
- Mathematical analysis
- Condensed matter physics

His primary areas of investigation include Statistical physics, Classical mechanics, Range, Phase diagram and Condensed matter physics. His research integrates issues of Non-equilibrium thermodynamics, Quantum, Canonical ensemble, Microcanonical ensemble and Stationary state in his study of Statistical physics. His Microcanonical ensemble research incorporates elements of Statistical ensemble, Grand canonical ensemble and Tricritical point.

As part of one scientific family, he deals mainly with the area of Stationary state, narrowing it down to issues related to the Statistical mechanics, and often Thermodynamic equilibrium and Flow. The Classical mechanics study combines topics in areas such as Phase transition, Phase, Hamiltonian and Thermodynamic limit. Stefano Ruffo combines subjects such as Quantum electrodynamics, Excitation amplitude and Breather with his study of Condensed matter physics.

This overview was generated by a machine learning system which analysed the scientist’s body of work. If you have any feedback, you can contact us here.

Statistical mechanics and dynamics of solvable models with long-range interactions

Alessandro Campa;Thierry Dauxois;Stefano Ruffo.

Physics Reports **(2009)**

890 Citations

Clustering and relaxation in Hamiltonian long-range dynamics

Mickael Antoni;Stefano Ruffo.

Physical Review E **(1995)**

617 Citations

Dynamics and Thermodynamics of Systems with Long-Range Interactions: An Introduction

Thierry Dauxois;Stefano Ruffo;Ennio Arimondo;Martin Wilkens.

Dynamics and Thermodynamics of Systems with Long-Range Interactions **(2002)**

462 Citations

Inequivalence of Ensembles in a System with Long-Range Interactions

Julien Barré;Julien Barré;David Mukamel;Stefano Ruffo.

Physical Review Letters **(2001)**

302 Citations

Stability criteria of the Vlasov equation and quasi-stationary states of the HMF model

Yoshiyuki Y. Yamaguchi;Yoshiyuki Y. Yamaguchi;Julien Barré;Freddy Bouchet;Freddy Bouchet;Freddy Bouchet;Thierry Dauxois.

Physica A-statistical Mechanics and Its Applications **(2004)**

300 Citations

Physics of Long-Range Interacting Systems

Alessandro Campa;Thierry Dauxois;Duccio Fanelli;Stefano Ruffo.

**(2014)**

273 Citations

Equipartition threshold in nonlinear large Hamiltonian systems: The Fermi-Pasta-Ulam model

Roberto Livi;Marco Pettini;Stefano Ruffo;Massimo Sparpaglione.

Physical Review A **(1985)**

253 Citations

Localization and equipartition of energy in the b-FPU chain: chaotic breathers

Thierry Cretegny;Thierry Cretegny;Thierry Dauxois;Thierry Dauxois;Stefano Ruffo;Alessandro Torcini.

Physica D: Nonlinear Phenomena **(1998)**

216 Citations

Lyapunov Instability and Finite Size Effects in a System with Long-Range Forces

Vito Latora;Andrea Rapisarda;Stefano Ruffo.

Physical Review Letters **(1998)**

213 Citations

SUPERDIFFUSION AND OUT-OF-EQUILIBRIUM CHAOTIC DYNAMICS WITH MANY DEGREES OF FREEDOMS

Vito Latora;Vito Latora;Andrea Rapisarda;Stefano Ruffo.

Physical Review Letters **(1999)**

197 Citations

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