Is there really a Hubble tension?
Rameez, M
Sarkar, S
(14 Nov 2019)
Mean field limit for one dimensional opinion dynamics with Coulomb interaction and time dependent weights
Ben-Porat, I
Carrillo de la Plata, J
Galtung, S
Nonlinear Analysis: Theory, Methods and Applications
volume 240
(06 Dec 2023)
What was your highlight of 2023?
Without doubt, Conrad Shawcross' exhibition of over 40 mathematically inspired artworks has been one of ours, not only attracting visitors to our building who would not otherwise visit a mathematics building, but also inspiring our mathematicians to think about their own field and work. A gallery of art in a gallery of minds.
Fast unfolding of communities in large networks: 15 years later
Blondel, V
Guillaume, J
Lambiotte, R
Journal of Statistical Mechanics: Theory and Experiment
volume abs/2311.06047
(01 Jan 2023)
Continuous-Time Random Walks and Temporal Networks
Lambiotte, R
Temporal Network Theory
225-239
(21 Nov 2023)
On strongest algebraic program invariants
Hrushovski, E
Ouaknine, J
Pouly, A
Worrell, J
Journal of the ACM
volume 70
issue 5
(11 Oct 2023)
On the generalized Ramanujan and Arthur conjectures over function fields
Ciubotaru, D
Harris, M
(26 Nov 2023)
http://arxiv.org/abs/2311.15300v1
Full operator preconditioning and the accuracy of solving linear systems
Mohr, S
Nakatsukasa, Y
Urzua-Torres, C
IMA Journal of Numerical Analysis
(24 Jan 2024)
Fri, 08 Dec 2023
12:00
12:00
L3
A Positive Way to Scatter Strings and Particles
Hadleigh Frost
(Oxford)
Abstract
We present a new formulation of string and particle amplitudes that emerges from simple one-dimensional models. The key is a new way to parametrize the positive part of Teichmüller space. It also builds on the results of Mirzakhani for computing Weil-Petterson volumes. The formulation works at all orders in the perturbation series, including non-planar contributions. The relationship between strings and particles is made manifest as a "tropical limit". The results are well adapted to studying the scattering of large numbers of particles or amplitudes at high loop order. The talk will in part cover results from arXiv:2309.15913, 2311.09284.