Worldline sphaleron for thermal Schwinger pair production

被引：25

作者：

Gould, Oliver ^{[1
,2
]}

Rajantie, Arttu ^{[1
]}

Xie, Cheng ^{[1
]}

机构：

[1] Imperial Coll London, Dept Phys, London SW7 2AZ, England

[2] Univ Helsinki, Helsinki Inst Phys, FI-00014 Helsinki, Finland

来源：

PHYSICAL REVIEW D | 2018年 / 98卷 / 05期

关键词：

FIELD-THEORY; QUANTUM ELECTRODYNAMICS; FINITE-TEMPERATURE; MAGNETIC MONOPOLES; GAUGE-FIELDS; FALSE VACUUM; COLLISIONS; POINT; DECAY; RENORMALIZATION;

D O I：

10.1103/PhysRevD.98.056022

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

With increasing temperatures, Schwinger pair production changes from a quantum tunneling to a classical, thermal process, determined by a worldline sphaleron. We show this and calculate the corresponding rate of pair production for both spinor and scalar quantum electrodynamics, including the semiclassical prefactor. For electron-positron pair production from a thermal bath of photons and in the presence of an electric field, the rate we derive is faster than both perturbative photon fusion and the zero temperature Schwinger process. We work to all-orders in the coupling and hence our results are also relevant to the pair production of (strongly coupled) magnetic monopoles in heavy-ion collisions.

引用

页数：15

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