Magnetic permeability in constrained fermionic vacuum

M. V. Cougo-Pinto, C. Farina, A. Tort, Johann Rafelski

Research output: Contribution to journalArticle

9 Citations (Scopus)

Abstract

We obtain using Schwinger's proper time approach the Casimir-Euler-Heisenberg effective action of fermion fluctuations for the case of an applied magnetic field. We implement here the compactification of one space dimension into a circle through anti-periodic boundary condition. Aside of higher order non-linear field effects we identify a novel contribution to the vacuum permeability. These contributions are exceedingly small for normal electromagnetism due to the smallness of the electron Compton wavelength compared to the size of the compactified dimension, if we take the latter as the typical size of laboratory cavities, but their presence is thought provoking, also considering the context of strong interactions.

Original languageEnglish (US)
Pages (from-to)388-395
Number of pages8
JournalPhysics Letters B
Volume434
Issue number3-4
StatePublished - Aug 27 1998

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magnetic permeability
vacuum
permeability
fermions
boundary conditions
electromagnetism
cavities
magnetic fields
wavelengths
electrons

ASJC Scopus subject areas

  • Nuclear and High Energy Physics

Cite this

Cougo-Pinto, M. V., Farina, C., Tort, A., & Rafelski, J. (1998). Magnetic permeability in constrained fermionic vacuum. Physics Letters B, 434(3-4), 388-395.

Magnetic permeability in constrained fermionic vacuum. / Cougo-Pinto, M. V.; Farina, C.; Tort, A.; Rafelski, Johann.

In: Physics Letters B, Vol. 434, No. 3-4, 27.08.1998, p. 388-395.

Research output: Contribution to journalArticle

Cougo-Pinto, MV, Farina, C, Tort, A & Rafelski, J 1998, 'Magnetic permeability in constrained fermionic vacuum', Physics Letters B, vol. 434, no. 3-4, pp. 388-395.
Cougo-Pinto MV, Farina C, Tort A, Rafelski J. Magnetic permeability in constrained fermionic vacuum. Physics Letters B. 1998 Aug 27;434(3-4):388-395.
Cougo-Pinto, M. V. ; Farina, C. ; Tort, A. ; Rafelski, Johann. / Magnetic permeability in constrained fermionic vacuum. In: Physics Letters B. 1998 ; Vol. 434, No. 3-4. pp. 388-395.
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