It covers topics of mathematical physics and theoretical physics. The impact factor of the journal in 2005 was 1.566.[1] Mathematical physics is the scientific discipline concerned with the application of mathematics to problems in physics and the development of mathematical methods suitable for such applications and for the formulation of physical theories1. ... Theoretical physics employs mathematical models and abstractions of physics, as opposed to experimental processes, in an attempt to understand nature. ... The Impact factor, very often abbreviated IF, is a measure of the citations to science and social science journals. ...