تقرير
Forward scattering amplitudes in the imaginary time formalism
| العنوان: | Forward scattering amplitudes in the imaginary time formalism |
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| المؤلفون: | Brandt, F. T., Frenkel, J., Martins-Filho, S., McKeon, D. G. C., Sakoda, G. S. S. |
| المصدر: | Phys. Rev. D 104, 105007 (2021) |
| سنة النشر: | 2021 |
| المجموعة: | High Energy Physics - Theory |
| مصطلحات موضوعية: | High Energy Physics - Theory |
| الوصف: | We study, in the imaginary time formalism, the relation between loops and on-shell forward scattering tree amplitudes in thermal field theories. This allows for an efficient evaluation, at all temperatures, of Green's functions with causal retarded boundary conditions. We present an application of this relation in quantum gravity coupled to scalar matter fields. We show that at one or two loops, involving planar diagrams, the 1PI retarded thermal Green's functions may respectively be expressed in terms of connected forward scattering tree amplitudes of one or two on-shell particles. Comment: 15 pages, four figures. Published in Physical Review D (typos corrected) |
| نوع الوثيقة: | Working Paper |
| DOI: | 10.1103/PhysRevD.104.105007 |
| URL الوصول: | http://arxiv.org/abs/2110.07694 |
| رقم الأكسشن: | edsarx.2110.07694 |
| قاعدة البيانات: | arXiv |
| DOI: | 10.1103/PhysRevD.104.105007 |
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