التفاصيل البيبلوغرافية
| العنوان: |
Spontaneous symmetry breaking on surface defects |
| المؤلفون: |
Gabriel Cuomo, Shuyu Zhang |
| المصدر: |
Journal of High Energy Physics, Vol 2024, Iss 3, Pp 1-50 (2024) |
| بيانات النشر: |
SpringerOpen, 2024. |
| سنة النشر: |
2024 |
| المجموعة: |
LCC:Nuclear and particle physics. Atomic energy. Radioactivity |
| مصطلحات موضوعية: |
Boundary Quantum Field Theory, Renormalization Group, Scale and Conformal Symmetries, Spontaneous Symmetry Breaking, Nuclear and particle physics. Atomic energy. Radioactivity, QC770-798 |
| الوصف: |
Abstract Coleman’s theorem states that continuous internal symmetries cannot be spontaneously broken in two-dimensional quantum field theories (QFTs). In this work we consider surface (i.e. two-dimensional) defects in d-dimensional conformal field theories (CFTs) invariant under a continuous internal symmetry group G. We study under which conditions it is possible for a surface defect to break spontaneously a continuous internal symmetry. We find that spontaneous symmetry breaking (SSB) is impossible under reasonable assumptions on the defect Renormalization Group (RG) flow. Counterexamples are possible only for exotic RG flows, that do not terminate at a fixed-point. We discuss an example of this kind. We also illustrate our no-go result with an effective field theory analysis of generic defect RG flows. We find a generic weakly coupled defect universality class (with no SSB), where correlation functions decay logarithmically. Our analysis generalizes the recent discovery by Metlitski of the extraordinary-log boundary universality class in the O(N) model. |
| نوع الوثيقة: |
article |
| وصف الملف: |
electronic resource |
| اللغة: |
English |
| تدمد: |
1029-8479 |
| Relation: |
https://doaj.org/toc/1029-8479 |
| DOI: |
10.1007/JHEP03(2024)022 |
| URL الوصول: |
https://doaj.org/article/4656dbef3c8f4a808b2b05a1faecccfe |
| رقم الانضمام: |
edsdoj.4656dbef3c8f4a808b2b05a1faecccfe |
| قاعدة البيانات: |
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