Observing thermal Schwinger pair production

Oliver Gould, Stuart Mangles, Arttu Rajantie, Steven Rose, Cheng Xie

Forskningsoutput: TidskriftsbidragArtikelVetenskapligPeer review

Sammanfattning

We study the possibility of observing Schwinger pair production enhanced by a thermal bath of photons. We consider the full range of temperatures and electric field intensities from pure Schwinger production to pure thermal production, and identify the most promising and interesting regimes. In particular, we identify temperatures of similar to 20 keV/k(B) and field intensities of similar to 10(23) W cm(-2) where pair production would be observable. In this case, the thermal enhancement over the Schwinger rate is exponentially large and due to effects which are not visible at any finite order in the loop expansion. Pair production in this regime can thus be described as more nonperturbative than the usual Schwinger process, which appears at one loop. Unfortunately, such high temperatures appear to be out of reach of foreseeable technologies, though nonthermal photon distributions with comparable energy densities are possible. We suggest the possibility that similar nonperturbative enhancements may extend out of equilibrium and propose an experimental scheme to test this.
Originalspråkengelska
Artikelnummer052120
TidskriftPhysical Review A
Volym99
Utgåva5
Antal sidor8
ISSN2469-9926
DOI
StatusPublicerad - 22 maj 2019
MoE-publikationstypA1 Tidskriftsartikel-refererad

Vetenskapsgrenar

  • 114 Fysik

Citera det här

Gould, O., Mangles, S., Rajantie, A., Rose, S., & Xie, C. (2019). Observing thermal Schwinger pair production. Physical Review A, 99(5), [052120]. https://doi.org/10.1103/PhysRevA.99.052120
Gould, Oliver ; Mangles, Stuart ; Rajantie, Arttu ; Rose, Steven ; Xie, Cheng. / Observing thermal Schwinger pair production. I: Physical Review A. 2019 ; Vol. 99, Nr. 5.
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Gould, O, Mangles, S, Rajantie, A, Rose, S & Xie, C 2019, 'Observing thermal Schwinger pair production', Physical Review A, vol. 99, nr. 5, 052120. https://doi.org/10.1103/PhysRevA.99.052120

Observing thermal Schwinger pair production. / Gould, Oliver; Mangles, Stuart; Rajantie, Arttu; Rose, Steven; Xie, Cheng.

I: Physical Review A, Vol. 99, Nr. 5, 052120, 22.05.2019.

Forskningsoutput: TidskriftsbidragArtikelVetenskapligPeer review

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AU - Gould, Oliver

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AU - Rose, Steven

AU - Xie, Cheng

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AB - We study the possibility of observing Schwinger pair production enhanced by a thermal bath of photons. We consider the full range of temperatures and electric field intensities from pure Schwinger production to pure thermal production, and identify the most promising and interesting regimes. In particular, we identify temperatures of similar to 20 keV/k(B) and field intensities of similar to 10(23) W cm(-2) where pair production would be observable. In this case, the thermal enhancement over the Schwinger rate is exponentially large and due to effects which are not visible at any finite order in the loop expansion. Pair production in this regime can thus be described as more nonperturbative than the usual Schwinger process, which appears at one loop. Unfortunately, such high temperatures appear to be out of reach of foreseeable technologies, though nonthermal photon distributions with comparable energy densities are possible. We suggest the possibility that similar nonperturbative enhancements may extend out of equilibrium and propose an experimental scheme to test this.

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