# Statistical physics

At the terminus of the liquid-vapor transition line, where the two thermodynamic phases become identical, there occurs a bright scatering of light, called critical opalescence, a visible striking signature of the critical behavior. Criticality and phase transitions are ubiquous phenomena observed in a variety of systems of distinct natures: ferromagnetic materials, liquid-vapor, alloys, liquid crystals, etc. Although of distinct natures, they can be studied in a unified way by means of the concept of universality of the critical behavior. This is the cetral idea of the studies carried out by the researchers of the Group of Statistical Physics. They use cooperative statistical mechanical models with many degrees of freedom, which are studied by analytical tools provided by the methods of mathematical physics and approximative approaches as well as computer simulation methods, such as Monte Carlo. Stochastic dynamics is a powerful approach used to describe nonequilibrium systems, population dynamics and spreading of disease. The Group of Mathematical Physics aims to provide theoritical physics with powerful mathematical tools and encompasses other directions in addition to statistical mechanics and stochastic processes such as field theory, quantum and classical mechanics, and general relativity. Complex systems, such as the neural networks, are also the object of study. Dynamical systems, with deterministic chaos, are investigated from the theoretical point of view and experimentally in the Nonlinear Phenomena Laboratory.*Statistical mechanics*

André de Pinho Vieira

Carla Goldman

Carlos Eduardo Fiore dos Santos

Carlos Eugênio Imbassahy Carneiro

Carlos Sehiti Orii Yokoi

Silvio Roberto de Azevedo Salinas

Vera Bohomoletz Henriques*Stochastic dynamics*

Mário José de Oliveira

Tânia Tomé Martins de Castro*Complex systems*

Carmen Pimentel Cintra do Prado

Nestor Felipe Caticha Alfonso*Mathematical physics*

Domingos Humberto Urbano Marchetti

João Carlos Alves Barata

Paulo Teotônio Sobrinho

Walter Alberto de Siqueira Pedra*Dynamical systems*

Iberê Luiz Caldas

José Carlos Sartorelli