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The notion of chirality plays a significant role in various physical areas, ranging from high-energy physics to material science. In this colloquium, I will describe some novel quantum effects connected to chirality. In the first part, I will discuss how chiral materials can modify quantum fluctuations in the vacuum, leading to anomalous forces and spectra. Then, I will briefly show that a quantum shift occurs in the scattering process of a chiral particle. In the last part, I will explain the geometric response of chiral superconductors, which unambiguously serves as the smoking gun of this long-sought phase.
Qingdong Jiang is currently a postdoctoral researcher working with Frank Wilczek at Stockholm University, Sweden. He received his Ph.D. degree (supervisor: X. C. Xie) from Peking University in 2017. His interests include Casimir forces, cavity quantum electrodynamics, unconventional superconductivity, and topological phases of matter.