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6

sep

Popular science lecture in physics: Entropy – Measuring the uncertainty

6 september 2022 16:00 till 18:00 | Föreläsning
Neon lights and shapes. Photo.

Welcome to a lecture with visiting theoretical physicist Constantino Tsallis – an award-winning and renowned researcher at the Brazilian Center for Physical Research. In this lecture, he will talk about entropy – a concept that physicists have long used as a measure of disorder. What is entropy, and how can it be used in natural, artificial and social systems? This lecture is open to staff, students, and the general public.

Time: 6 September from 16:00 to 18:00 (coffee and sandwiches are served 15:45–16:00).
Place: Lecture hall Lundmarksalen in the Astronomy building, Sölvegatan 27 in Lund, and via Zoom.

Abstract

Energy has to do with the possibilities of the physical system, while entropy has to do with the probabilities of those possibilities. The former emerges in mechanics and electromagnetism, which are directly empirical sciences. The latter emerges in thermodynamics and statistical mechanics, which are more abstract sciences. In this lecture, Constantino Tsallis will elaborate on these issues, and illustrate their usefulness in both simple and complex natural, artificial and social systems. For example, the algorithmic use of appropriate entropies can sensibly help increasing the number of true positives and decreasing the number of false positives in medical diagnosis.

About the lecturer

Photo of Constantino Tsallis.
Constantino Tsallis.

Constantino Tsallis is a researcher at the Brazilian Center for Physical Research in Rio de Janeiro, and at the Santa Fe Institute in New Mexico, USA. During his career, he has worked in a variety of theoretical subjects in the areas of critical phenomena, chaos and nonlinear dynamics, economics, cognitive psychology, immunology, population evolution, among others. Since three decades, he is focusing on the entropy and the foundations of statistical mechanics, as well as on some of their scientific and technological applications. He is known for introducing the notion of what is known as Tsallis entropy (a generalization of the standard Boltzmann–Gibbs entropy) and Tsallis statistics (a coherent set of mathematical functions, properties and associated probability distributions).

Constantino Tsallis has been honored with prizes in several countries, including the Guggenheim Award from USA, the Mexico Prize for Science and Technology, and the distinction of Aristion (Excellence) by the Academy of Athens, originally founded by Plato. A recent study at the Stanford University, USA, ranked Constantino Tsallis, for the third consecutive year, as the world-wide most influential scientist of Brazil.

Constantino Tsallis has given regular undergraduate and graduate courses in Physics in Brazil, Argentina, USA, France and Germany, as well as over 1,000 invited lectures around the world.

Participation via Zoom

Zoom link for the lecture
Meeting ID: 617 4611 4447
Password: 185281

Om evenemanget

Plats:

Lecture hall Lundmarksalen in the Astronomy building, Sölvegatan 27 in Lund, and via Zoom.

Kontakt:

roman [dot] pasechnik [at] thep [dot] lu [dot] se