تقرير
Conformal field theories in a magnetic field
| العنوان: | Conformal field theories in a magnetic field |
|---|---|
| المؤلفون: | Boyack, Rufus, Delacrétaz, Luca V., Dupuis, Éric, Witczak-Krempa, William |
| سنة النشر: | 2023 |
| المجموعة: | Condensed Matter High Energy Physics - Theory |
| مصطلحات موضوعية: | High Energy Physics - Theory, Condensed Matter - Statistical Mechanics, Condensed Matter - Strongly Correlated Electrons, Condensed Matter - Superconductivity |
| الوصف: | We study the properties of 2+1d conformal field theories (CFTs) in a background magnetic field. Using generalized particle-vortex duality, we argue that in many cases of interest the theory becomes gapped, which allows us to make a number of predictions for the magnetic response, background monopole operators, and more. Explicit calculations at large N for Wilson-Fisher and Gross-Neveu CFTs support our claim, and yield the spectrum of background (defect) monopole operators. Finally, we point out that other possibilities exist: certain CFTs can become metallic in a magnetic field. Such a scenario occurs for a Dirac fermion coupled to a Chern-Simons gauge field, where a non-Fermi liquid is argued to emerge. Comment: 8+10 pages |
| نوع الوثيقة: | Working Paper |
| URL الوصول: | http://arxiv.org/abs/2312.12546 |
| رقم الأكسشن: | edsarx.2312.12546 |
| قاعدة البيانات: | arXiv |
| الوصف غير متاح. |