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of 21
pro vyhledávání: '"Strobel, Eckhard"'
In the very early universe, a generalized Schwinger effect can create pairs from both electrical and gravitational fields. The expectation value of fermionic current induced by these newly created pairs has been recently computed in de Sitter spaceti
Externí odkaz:
http://arxiv.org/abs/1602.09090
Autor:
Blinne, Alexander, Strobel, Eckhard
Publikováno v:
Phys. Rev. D 93, 025014 (2016)
We present a comparison of two methods to compute the momentum spectrum and the Schwinger pair creation rate for pulsed rotating electric fields: one based upon the real-time Dirac--Heisenberg--Wigner (DHW) formalism and a semiclassical approximation
Externí odkaz:
http://arxiv.org/abs/1510.02712
Publikováno v:
Phys. Rev. D 93, 025004 (2016)
We study the fermionic Schwinger effect in two dimensional de Sitter spacetime. To do so we first present a method to semiclassically compute the number of pairs created per momentum mode for general time dependent fields. In addition the constant el
Externí odkaz:
http://arxiv.org/abs/1507.01686
Autor:
Stahl, Clément, Strobel, Eckhard
We present a method to semiclassically compute the pair creation rate of bosons and fermions in de Sitter spacetime. The results in the bosonic case agree with the ones in the literature. We find that for the constant electric field the fermionic and
Externí odkaz:
http://arxiv.org/abs/1507.01401
Autor:
Strobel, Eckhard, Xue, She-Sheng
Publikováno v:
Phys. Rev. D 91, 045016 (2015)
We semiclassically investigate Schwinger pair production for pulsed rotating electric fields depending on time. To do so we solve the Dirac equation for two-component fields in a WKB-like approximation. The result shows that for two-component fields
Externí odkaz:
http://arxiv.org/abs/1412.2628
Autor:
Strobel, Eckhard, Xue, She-Sheng
Publikováno v:
Nucl. Phys. B 886 (2014) 1153-1176
We present an analytic calculation of the semiclassical electron-positron pair creation rate by time-dependent electrical fields. We use two methods, first the imaginary time method in the WKB-approximation and second the world-line instanton approac
Externí odkaz:
http://arxiv.org/abs/1312.3261
Publikováno v:
PhysRevD 88, 025049 (2013)
In 1936, Weisskopf showed that for vanishing electric or magnetic fields the strong-field behavior of the one loop Euler-Heisenberg effective Lagrangian of quantum electro dynamics (QED) is logarithmic. Here we generalize this result for different li
Externí odkaz:
http://arxiv.org/abs/1305.3133
Publikováno v:
Class.Quant.Grav. 29 (2012) 145012
We extend previous results in spherically symmetric gravitational systems coupled with a massless scalar field within the loop quantum gravity framework. As starting point, we take the Schwarzschild spacetime. The results presented here rely on the u
Externí odkaz:
http://arxiv.org/abs/1201.4229
In 1936, Weisskopf [K. Dan. Vidensk. Selsk. Mat. Fys. Medd. XIV (1936)] showed that for vanishing electric or magnetic fields the strong-field behavior of the one-loop Euler– Heisenberg e˙ective Lagrangian of quantum electrodynamics (QED) is log
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=od______1594::89ab153ee6c8264938370b4f941faa4e
http://elib.bsu.by/handle/123456789/133688
http://elib.bsu.by/handle/123456789/133688
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