Video URL
https://pirsa.org/16050005A (Nearly) Weaker-Than-Gravity Bound on Dark Matter Electromagnetism
APA
Mardon, J. (2016). A (Nearly) Weaker-Than-Gravity Bound on Dark Matter Electromagnetism. Perimeter Institute for Theoretical Physics. https://pirsa.org/16050005
MLA
Mardon, Jeremy. A (Nearly) Weaker-Than-Gravity Bound on Dark Matter Electromagnetism. Perimeter Institute for Theoretical Physics, May. 10, 2016, https://pirsa.org/16050005
BibTex
@misc{ scivideos_PIRSA:16050005, doi = {10.48660/16050005}, url = {https://pirsa.org/16050005}, author = {Mardon, Jeremy}, keywords = {Particle Physics}, language = {en}, title = {A (Nearly) Weaker-Than-Gravity Bound on Dark Matter Electromagnetism}, publisher = {Perimeter Institute for Theoretical Physics}, year = {2016}, month = {may}, note = {PIRSA:16050005 see, \url{https://scivideos.org/index.php/pirsa/16050005}} }
Jeremy Mardon Stanford University
Abstract
An unbroken U(1)' is a minimal possibility for a dark matter self interaction, and may even be associated with dark matter stability. However, such an interaction faces incredibly strong constraints due to collective plasma effects, which dominate over 2-to-2 scattering by an order-of-magnitude of orders-of-magnitude. I will discuss the physics of these collective effects, and show preliminary results of simulation. The constraint of such a self interaction is estimated to be nearly as weak as gravity.