Quantum Theory

Symmetry plays an essential role in science - not only in crystallography and quantum theory, where its role has long been explicitly recognized, but also in condensed-matter physics, thermodynamics, chemistry, biology, and others. This text discusses the concept of symmetry and its application to many areas of science. While it includes a detailed introduction to the theory of groups, which forms the mathematical apparatus for describing symmetries, it also includes a much more general discussion of the nature of symmetry and its role in science. Many problems serve to sharpen the reader's understanding, and an extensive bibliography concludes the book.

Quantum Mechanics and Quantum Field Theory

The book considers foundational thinking in quantum theory, focusing on the role the fundamental principles and principle thinking there, including thinking that leads to the invention of new principles, which is, the book contends, one of the ultimate achievements of theoretical thinking in physics and beyond.

Theory of Atom and Quantum Theory

The proceedings have been divided into four parts:
Part I deals with Quantum information theory, Quantum probability theo- ry and Quantum symmetry. The papers appear1ng there, cover some fundamen- tal general problematics in the interpretation and use of quantum theory. The formulation of a quantum information theory is needed for a proper use of quantum optical devices for information transmission. But there are only a few presentation of such a theory in the litterature. A nice book by V.V. Mitiugov -Physical foundations of information theory, was published in russian in 1976 but never translated. It relies heavily on the work of L.B. Levitin, who has given here an extended summary of the theory. This paper provides at the same time a kind of general conceptual framework for the whole seminar.