Speaker
Description
This talk will be based on SciPost Phys. 17, 021 (2024). Defects are common in physical systems with boundaries, impurities or extensive measurements. The interaction between bulk and defect can lead to rich physical phenomena. Defects in gapless phases of matter with conformal symmetry usually flow to a defect conformal field theory (dCFT). Understanding the universal properties of dCFTs is a challenging task. In this talk, we propose a computational strategy applicable to a line defect in arbitrary dimensions. Our main assumption is that the defect has a UV description in terms of a local modification of the Hamiltonian so that we can compute the overlap between low-energy eigenstates of a system with or without the defect insertion. We argue that these overlaps contain a wealth of conformal data, including the
Keywords | Conformal field theory, conformal defect, fuzzy sphere |
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Submitter's Email Address | physics@zhengzhou.page |
Recording Permission | YES |
Virtual Audience Permission | YES |
Photography Permission | YES |
Authors
External references
- 24090190
- a21036c6-831f-4249-abf2-618f69ba93a8