D. B. Blaschke (University of Wroclaw and JINR Dubna): Short-distance electromagnetic structure of the physical vacuum
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Tanácsterem
Description
Solutions of the kinetic equations are investigated which describe, on a
nonperturbative basis, the vacuum creation of quasiparticle
electron-positron pairs due to a strong laser field. The dependence
of the quasiparticle electron (positron) distribution function and the
particle number density is explored in a wide range of the laser
radiation parameters, i.e., wavelength lambda and electric field
strength E_0. Three domains are identified: the calm valley (the domain
of the vacuum polarization effects), where the residual density of the
e-e+ pairs is negligibly small, and two accumulation domains, in
which the production rate of e-e+ pairs is sharply increased and the e-e
+ pair density can reach asignificant values (the short wavelength
domain and the strong field one). In particular, the obtained
results point to a complicated short-distance electromagnetic structure
of the physical vacuum in the domain of short wavelengths. lambda <
lambda_c = hbar/m_c. For moderately strong fields E_0 < E_c = m^2/e the
accumulation regime can be realized where a plasma with a high density
of e-e+ quasiparticles can be achieved. In this domain of field
strengths and in the whole range of investigated wavelengths,
the observation of the dynamical Schwinger eect is facilitated.
Collaboration: A. M. Fedotov, B. Kaempfer, A. D. Panferov, A. V.
Prozorkevich, S. M. Schmidt, S. A. Smolyansky
Referenciák
[1] S. M. Schmidt, D. Blaschke, G. Röpke, S. A. Smolyansky, A. V.
Prozorkevich and V. D. Toneev,
A quantum kinetic equation for particle production in the Schwinger
mechanism," Int. J. Mod. Phys. E 7, 709 (1998).
[2] D. B. Blaschke, A. V. Prozorkevich, C. D. Roberts, S. M. Schmidt, S.
A. Smolyansky, \Pair production and optical lasers,"
Phys. Rev. Lett. 96, 140402 (2006).
[3] D. B. Blaschke, V. V. Dmitriev, G. Röpke, S. A. Smolyansky, \BBGKY
kinetic approach for an e-e+ plasma created
from the vacuum in a strong laser-generated electric field: The
one-photon annihilation channel," Phys. Rev. D84, 085028 (2011).
[4] D. B. Blaschke, A. V. Prozorkevich, G. Röpke, C. D. Roberts, S. M.
Schmidt, D. S. Shkirmanov, S. A. Smolyansky,
Dynamical Schwinger effect and high-intensity lasers. realising
nonperturbative QED," Eur. Phys. J. D55, 341 (2009).
[5] G. Gregori, D. B. Blaschke, P. P. Rajeev, H. Chen, R. J. Clarke, T.
Huffman, C. D. Murphy, A. V. Prozorkevich, C. D. Roberts, G. Röpke, S.
M. Schmidt, S. A. Smolyansky, S. Wilks, and R. Bingham
A proposal for testing subcritical vacuum pair production with high
power lasers," High Energy Dens. Phys. 6, 166 (2010).
[6] S. M. Schmidt, D. Blaschke, G. Röpke, A. V. Prozorkevich, S. A.
Smolyansky, and V. D. Toneev,
NonMarkovian effects in strong field pair creation," Phys. Rev. D59,
094005 (1999).
[7] C. D. Roberts, S. M. Schmidt, D. V. Vinnik,
Quantum effects with an X-ray free electron laser," Phys. Rev. Lett. 89,
153901 (2002).
[8] P. Levai and V. Skokov,
Nonperturbative enhancement of heavy quark-pair production in a strong
SU(2) color field," Phys. Rev. D 82, 074014 (2010).
