Calendar

Month
Month
2017 Oct November 2018 Dec 2019
Sun Mon Tue Wed Thu Fri Sat
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
When Fields Are Not Degrees of Freedom, Mario Hubert (Columbia) 4:30 pm
When Fields Are Not Degrees of Freedom, Mario Hubert (Columbia) @ CUNY Grad Center, 5307
Nov 28 @ 4:30 pm – 6:30 pm
Tickets
We show that in the Maxwell–Lorentz theory of classical electrodynamics most initial values for fields and particles lead to an ill-defined dynamics, as they exhibit singularities or discontinuities along light-cones. This phenomenon suggests that the Maxwell equations and the Lorentz force law ought rather to be read as a system of delay differential equations, that is, differential equations that relate a function and its derivatives at different times. This mathematical reformulation, however, leads to physical[...]
29
30
2017 Oct November 2018 Dec 2019