Please note that the list below only shows forthcoming events, which may not include regular events that have not yet been entered for the forthcoming term. Please see the past events page for a list of all seminar series that the department has on offer.

 

Past events in this series


Thu, 22 May 2025

15:00 - 16:00
L6

Exploring the $c$ - the conformal anomaly and spaces of field theories

Ludovic Fraser-Taliente
Abstract
$c$ is pretty cool. In two-dimensional critical theories, we are surrounded by it: it appears in the Virasoro central charge, the Stefan-Boltzmann constant, the conformal 'anomaly', the entanglement entropy, and at the endpoints of the Zamolodchikov $C$-function - and, of course, it doesn't appear on the string worldsheet. I will explain these appearances and the tight relationships between them, and discuss how we might use $c$ to chart and classify the space of CFTs and QFTs.


 

Junior Strings is a seminar series where DPhil students present topics of common interest that do not necessarily overlap with their own research area. This is primarily aimed at PhD students and post-docs but everyone is welcome.

Thu, 19 Jun 2025
13:30
L5

From path integrals to… financial markets?

Giuseppe Bogna
Abstract

Ever wondered how ideas from physics can used in real-world scenarios? Come to this talk to understand what is an option and how they are traded in markets. I will recall some basic notions of stochastic calculus and derive the Black-Scholes (BS) equation for plain vanilla options. The BS equation can be solved using standard path integral techniques, that also allow to price more exotic derivatives. Finally, I will discuss whether the assumptions behind Black-Scholes dynamics are reasonable in real-world markets (spoiler: they're not), volatility smiles and term structures of the implied volatility.

 

Junior Strings is a seminar series where DPhil students present topics of common interest that do not necessarily overlap with their own research area. This is primarily aimed at PhD students and post-docs but everyone is welcome.