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Physics & Astronomy Colloquium – Fall 2019 – Lizzi
October 9 @ 3:30 pm - 5:00 pm
Speaker: Fedele Lizzi (Naples University, Italy)
Title: Pointless Physics
Abstract: I will describe the role of points in modern physics, and in particular, in the attempts to build a theory of quantum gravity. Modern theories will require a quantum spacetime, and in it the usual concept of spacetime composed of points, as we have used so far, may lose its meaning. In particular, I will discuss the spectral approach to physics called noncommutative geometry, and describe a concrete model in quantum field theory in which points loose their meaning.