The era of complexity in economics combined with the last financial\economic crisis generated a lot of debate about the relevance of economic theory. This challenging context favoured the emergence of a variety of new approaches dealing with this increasing complexity. Econophysics is good illustration of this diversification of knowledge. Today, authors coming from different sub-fields (geo-physics, quantum mechanics, mathematicians, computer science, etc.) try to characterize the complexity of interactions between economic agents. In this challenging context, a PhD in Economics or Finance dealing with econophysics is no doubt an advantage to understand and predict the evolution of financial data.