Zhihan Jiang
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I can be reached at jiangzhihan63@gmail.com, and a complete CV is available here.
Projects
Selected recent projects.
Suppressed Quantum Effects of Weakly Coupled Waves
Intrinsically quantum effects of gravitational waves and dark matter carry extra powers of the weak coupling, relative to classical effects. This strong suppression can only be evaded using highly nonclassical detector states.
Quantum Calculations of the Cavity Shift in Electron Magnetic Moment Measurements
Conducting walls have a very small, but observable effect on measurements of electron $g-2$. We compute it from first principles with quantum field theory, and show how it can be accounted for in future measurements.
Intrinsically Quantum Effects of Axion Dark Matter are Undetectable
Intrinsically quantum effects of axion dark matter are always highly suppressed, and in practice undetectable. Thus, even though the axion may be in a nonclassical state, it can still be treated as a classical field.
A Prototype Hybrid Mode Cavity for Heterodyne Axion Detection
The heterodyne approach to axion detection enhances the axion signal power. A prototype cavity was designed and tested, with a novel geometry that maximizes signal, suppresses noise, and allows a wide tuning range.
Determining Spin-Dependent Light Dark Matter Rates from Neutron Scattering
Light dark matter particles could couple directly to electron spin. Since the same is true for neutrons, existing neutron scattering data can accurately predict the signal rate of a dark matter experiment.
Writing
Advice
- Learning Introductory Physics. A FAQ for high school students who want to start learning physics or taking part in physics competitions, such as the USAPhO.
- After Introductory Physics. Some tips for self-taught students on what to do after mastering the basics, including book recommendations and online resources.
- Physics Activities. Some places to apply physics knowledge in high school.
- The Theoretical Minimum. A short list of canonical books for self-study, from introductory physics to PhD candidacy.
- Physics Qualifying Exam. Notes and advice on a physics qualifying exam.
Expository
- The Surprising Subtlety of Electrostatic Field Lines. A puzzle in electrostatics and its resolution with differential geometry.
- Novel Searches for Physics Beyond the Standard Model. A dissertation on several new types of experimental searches and their motivation.
- Cosmological Relaxation. A review of models that “relax” the Higgs boson’s mass and motivations for model building.
- The Meaning of Nothing. An essay on how theoretical stories map onto reality, and why philosophical flexibility can be useful in physics.