Fermionic Schwinger effect and induced current in de Sitter space

Takahiro Hayashinaka, Tomohiro Fujita, Jun'Ichi Yokoyama

研究成果: Article査読

40 被引用数 (Scopus)

抄録

We explore Schwinger effect of spin 1/2 charged particles with static electric field in 1+3 dimensional de Sitter spacetime. We analytically calculate the vacuum expectation value of the spinor current which is induced by the produced particles in the electric field. The renormalization is performed with the adiabatic subtraction scheme. We find that the current becomes negative, namely it flows in the direction opposite to the electric field, if the electric field is weaker than a certain threshold value depending on the fermion mass, which is also known to happen in the case of scalar charged particles in 1+3 de Sitter spacetime. Contrary to the scalar case, however, the IR hyperconductivity is absent in the spinor case.

本文言語English
論文番号010
ジャーナルJournal of Cosmology and Astroparticle Physics
2016
7
DOI
出版ステータスPublished - 2016 7 8
外部発表はい

ASJC Scopus subject areas

  • 天文学と天体物理学

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