The Electronic Journal of Theoretical Physics is a quarterly peer-reviewed open access scientific journal that was established in 2003. It covers all aspects of theoretical physics. The editors-in-chief are Ammar Sakaji (International Institute for Theoretical Physics and Mathematics, Prato, Italy) and Ignazio Licata (Institute for Scientific Methodology, Palermo, Italy) and the printed version is published by Aracne Editrice. The journal is abstracted and indexed in Scopus.