Some concepts of information theory, as entropy, conditional entropy and mutual information may be very useful to analyse several financial time series, especially statistical dependences. Trough the similarity between those measures and variance analysis is possible to get a new approach to study the level of statistical dependences in financial time series. KEY-WORDS: entropy, conditional ent...

In this review we describe statistical mechanics of quantum systems in the presence of a Killing horizon and compare statistical-mechanical and one-loop contributions to black hole entropy. Studying these questions was motivated by attempts to explain the entropy of black holes as a statistical-mechanical entropy of quantum fields propagating near the black hole horizon. We provide an introduct...