Prezados membros do DF, bom dia.

 

Seguem abaixo informações sobre o Colóquio (Presencial) que será apresentado nesta sexta-feira, dia 08/11/2024.

 

Palestrante:

Giulio Casati

University of Insubria, Como, Italy

Professor Emeritus

 

Título:

Classical Physics and Black Body Radiation

 

Resumo:

The inability of classical physics to account for the experimentally observed frequency spectrum of blackbody radiation is at the origin of quantum theory. In spite of desperate attempts, the falloff of the blackbody curve at high frequencies could not be explained by classical mechanics. Here we discuss the properties of the black body spectrum by direct numerical solution of the classical equations of motion of a one-dimensional model that, however, contains the essential general features of the field-matter interaction. Our approach does not rely on any statistical assumption. We show that the classical blackbody spectrum exhibits remarkable properties: (i) a quasistationary state with low frequency modes thermalized with the matter (ii) consistency with the Stefan-Boltzmann law, and (iii) a high-frequency cutoff. The present work is a preliminary step before addressing ergodicity in quantum field the ories. This will require a nontrivial extension of concepts and tools recently devel oped for the investigation of thermalization and localization in many-body quantum systems. Preliminary results on a 3d model are also presented.

 

Mini Biografia:

Professor Emeritus - University of Insubria, Como , Italy.

Director of the Lake Como School of Advanced Studies, Como

Member of the Academia Europaea

Member of Academia Europea

 

 

Local: Auditório do Departamento de Física / CCEN / UFPE

Horário: 16h00