I am Ping-Kai Hu, currently a PhD candidate working on theoretical physics at UCLA.
My research interests are in the area of high energy physics, especially neutrino physics, dark matter, and a variety of topics in cosmology. Recently, I try to explore a new scenario for cosmic rays with my advisor Alexander Kusenko.
By the way, this website is still under construction.
Department of Physics & Astronomy,
Univsersity of California, Los Angeles
470 Portola Plaza,
Los Angeles, CA 90095-1547
|Ph.D. in Physics||University of California, Los Angeles||in progress|
|M.S. in Physics||Naional Tsing Hua University, Taiwan||2012|
|B.S. in Physics||Naional Tsing Hua University, Taiwan||2010|
|UCLA Physics Department Fellowship||2013 -|
|Pai Hsiao-yen Police Children Scholarship||2009|
|4th International Workshop on Dark Matter, Dark Energy and Matter-Antimatter Asymmetry, Taiwan||2016|
|Particle Astrophysics and Cosmology Including Fundamental InteraCtions, Moorea, French Polynesia||2016|
The origin of ulltra-high-energy cosmic rays is still not clear. There are two different kinds of approaches to generate cosmic rays with high energy: “bottom-up” and “top-down”.
The approach of “bottom-up” is to accelerate charged particles by electromagnetic fields. It requires the mechanism like Fermi acceleration to boost particles from low energy to high energy. The alternative “top-down” approach is to generate high-energy particles by heavy-particle decays or pair annihilations, in which case we need heavy particles beyond the Standard Model.
How about we consider a model beyond the Standard Model, but still use the “bottom-up” approach? This idea leads us to the scenario of “ dark cosmic rays”.
To realise the scenario, what we need is just a long-ranged force in the dark sector. The simplest way is to introduce an U(1) gauge symmetry ...
You can find our paper on arXiv: 1611.04599
Drawing things is part of my life. As far as I can remember, I always leave some hand-writing or drawing if I can find some empty space on a paper. You can easily find all kinds of doodles on the scratch papers around me. I suppose you can say drawing is one of my hobbies.
I started exploring the area of digital painting. I am still kind of a beginner, but it's alot of fun. Currently, I draw on Krita.
Any way, you can check my gallery.
This page is all about my teaching.