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Here is the path to my GitHub

Here is the path to my Kaggle

Here is the path to my DeviantArt

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- Ping-Kai

Ping-Kai Hu


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.

Office: PAB 1-339

Curriculum Vitae

For more detail, a printable verison of my CV will be available HERE.

Ping-Kai Hu

PhD Candidate in Theoretical Physics

Department of Physics & Astronomy,
Univsersity of California, Los Angeles

470 Portola Plaza,
Los Angeles, CA 90095-1547

Office:PAB 1-339


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

Research / Study

Dark Cosmic Rays

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


A Hobby

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.

Digital Painting


This page is all about my teaching.

Lecture Notes