The wave-particle duality is a fundamental, yet mysterious, principle that underlies all of modern physics. Despite its central role in quantum theory for more than a century, it seems to gives rise to more problems than it solves, including the nature of measurement at the quantum level, the interpretation of the wavefunction, and the seemingly non-causal "spooky action at a distance" of quantum entanglement.

In this talk, I will discuss new research that points towards a resolution of these long-standing problems. I will outline a new interpretation of quantum mechanics, in which the particle- and wave-like nature of the electron are unified. This new "particle wave" interpretation builds on the pioneering work of Louis de Broglie, and presents a realistic, causal alternative to both the Copenhagen and the de Broglie-Bohm ("pilot wave") interpretations. By applying the particle wave to familiar results from the conventional theory, we will see how many of the problems of the wave-particle duality may potentially be solved.