4 papers · 1 filter
Universalities of Defects in Quantum Field Theories
Siwei Zhong
Defects are both physically rich objects and powerful tools in modern quantum field theory. They are extended operators, such as boundaries, impurities, and probe particles, embedd…
Baryon Junction and String Interactions: Part II
Xuzixiang Lou, Siwei Zhong
We study junctions between confining strings. These junctions arise in Yang-Mills theories, and we focus on their universal low-energy dynamics. Using open-closed duality, we map j…
Where Non-Invertible Symmetries End: Twist Defects for Electromagnetic Duality
Shu-Heng Shao, Siwei Zhong
We study novel conformal twist defects in 4d Maxwell theory, around which electric and magnetic fields are exchanged. These are codimension-2 defects living at the end of topologic…
Phases of Surface Defects in Scalar Field Theories
Avia Raviv-Moshe, Siwei Zhong
We study mass-type surface defects in a free scalar and Wilson-Fisher (WF) theories. We obtain exact results for the free scalar defect, including its RG flow and defect Wey…