Nonlinear trident in the high-energy limit: Nonlocality, Coulomb field, and resummations
| العنوان: | Nonlinear trident in the high-energy limit: Nonlocality, Coulomb field, and resummations |
|---|---|
| المؤلفون: | Greger Torgrimsson |
| المصدر: | Physical Review Physical Review D 102(2020), 096008 Physical review / D 102(9), 096008 (2020). doi:10.1103/PhysRevD.102.096008 |
| بيانات النشر: | APS, 2020. |
| سنة النشر: | 2020 |
| مصطلحات موضوعية: | Physics, High Energy Physics - Theory, Field (physics), 010308 nuclear & particles physics, FOS: Physical sciences, Trident, Electron, 01 natural sciences, Quantum nonlocality, Nonlinear system, High Energy Physics - Phenomenology, High Energy Physics - Phenomenology (hep-ph), High Energy Physics - Theory (hep-th), Quantum electrodynamics, 0103 physical sciences, Coulomb, ddc:530, Limit (mathematics), Resummation, 010306 general physics |
| الوصف: | We study nonlinear trident in laser pulses in the high-energy limit, where the initial electron experiences, in its rest frame, an electromagnetic field strength above Schwinger's critical field. At lower energies the dominant contribution comes from the "two-step" part, but in the high-energy limit the dominant contribution comes instead from the one-step term. We obtain new approximations that explain the relation between the high-energy limit of trident and pair production by a Coulomb field, as well as the role of the Weizs\"acker-Williams approximation and why it does not agree with the high-$\chi$ limit of the locally-constant-field approximation. We also show that the next-to-leading order in the large-$a_0$ expansion is, in the high-energy limit, nonlocal and is numerically very important even for quite large $a_0$. We show that the small-$a_0$ perturbation series has a finite radius of convergence, but using Pad\'e-conformal methods we obtain resummations that go beyond the radius of convergence and have a large numerical overlap with the large-$a_0$ approximation. We use Borel-Pad\'e-conformal methods to resum the small-$\chi$ expansion and obtain a high precision up to very large $\chi$. We also use newer resummation methods based on hypergeometric/Meijer-G and confluent hypergeometric functions. Comment: 22 pages, 10 figures |
| وصف الملف: | application/pdf |
| اللغة: | English |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9fb35461dee6f4ae1b72bfe331bf2ca2 http://repo.scoap3.org/api |
| حقوق: | OPEN |
| رقم الأكسشن: | edsair.doi.dedup.....9fb35461dee6f4ae1b72bfe331bf2ca2 |
| قاعدة البيانات: | OpenAIRE |
| الوصف غير متاح. |