The description, comprehension, and prediction of the effects of electron correlation in real systems is nowadays one of the greatest challenge in many research domains, such as condensed matter, quantum chemistry, biology, astrophysics etc. This is because correlation is responsible for a great variety of effects such as the superconductivity or the adhesion of a gecko on a surface. The difficulty lies in the fact that one deals with so-called “many-body” phenomena, intrinsically due to the interaction among all the (1023) electrons in a system.
The existing approaches allowed us to describe a wide range of systems in a realistic way. Nevertheless, the present level of approximations does not provide yet with a predictive theory without relying too much on hypotheses. In fact difficulties arise when an electron system cannot be approximated as a classical charge distribution, and the fermionic nature of electrons must be explicitly taken into account. We will identify this scenario as the "strong electron correlation regime" (this is just my definition, which may very well be not shared by others).
The aim of the CORRELATION CT is to advance the comprehension and description of (strong) electron correlation by constructing its activities along three main directions:
- Access the true limits of the current approaches
- Beyond standard approximations: along the orthodox way
- Beyond standard approximations: thinking out of the box
Our collaboration team was established during the 2010 ETSF meeting in Berlin, in November 2010. Since then, there have been several other meetings.
More information for ETSF members can be found on the intranet page of the CORRELATION CT