تقرير
Adiabatic regularization for spin-$1$ fields
| العنوان: | Adiabatic regularization for spin-$1$ fields |
|---|---|
| المؤلفون: | Marañón-González, F. Javier, Navarro-Salas, José |
| سنة النشر: | 2023 |
| المجموعة: | General Relativity and Quantum Cosmology High Energy Physics - Theory |
| مصطلحات موضوعية: | General Relativity and Quantum Cosmology, High Energy Physics - Theory |
| الوصف: | We analyze the adiabatic regularization scheme to renormalize Proca fields in a four-dimensional Friedmann-Lema\^{i}tre-Robertson-Walker spacetime. The adiabatic method is well established for scalar and spin-$1/2$ fields, but is not yet fully understood for spin-$1$ fields. We give the details of the construction and show that, in the massless limit, the renormalized stress-energy tensor of the Proca field is closely related to that of a minimally coupled scalar field. Our result is in full agreement with other approaches, based on the effective action, which also show a discontinuity in the massless limit. The scalar field can be naturally regarded as a St\"ueckelberg-type field. We also test the consistency of our results in de Sitter space. Comment: 10 pages. V2: minor changes, misprints corrected, matches the published version (Phys. Rev. D) |
| نوع الوثيقة: | Working Paper |
| URL الوصول: | http://arxiv.org/abs/2310.11860 |
| رقم الأكسشن: | edsarx.2310.11860 |
| قاعدة البيانات: | arXiv |
| الوصف غير متاح. |