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Critical velocity in 3He-B vibrating wire experiments as analog of vacuum instability in a slowly oscillating electric field

  • A. Calogeracos
  • G. E. Volovik
Fluids

Abstract

The Lancaster experiments [C. A. M. Castelijns, K. F. Coates, A. M. Guenault, S. G. Mussett, and G. R. Pickett Phys. Rev. Lett. 56, 69 (1986)] with a cylindrical wire moving in superfluid 3He-B are discussed, where the measured critical velocity of pair creation was much below the Landau critical velocity. The phenomenon is shown to be analogous to the instability of the electron-positron vacuum in an adiabatically alternating strong electric potential of both signs, where the positive-and negative-root levels cross and thus the instability threshold is half the conventional value in a single static potential well.

Keywords

Spectroscopy State Physics Field Theory Elementary Particle Quantum Field Theory 
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Copyright information

© American Institute of Physics 1999

Authors and Affiliations

  • A. Calogeracos
    • 1
    • 2
  • G. E. Volovik
    • 3
    • 4
  1. 1.Low Temperature LaboratoryHelsinki University of TechnologyEspooFinland
  2. 2.NCA Research Associates, MaroussiAthensGreece
  3. 3.Low Temperature LaboratoryHelsinki University of TechnologyEspooFinland
  4. 4.L. D. Landau Institute for Theoretical PhysicsMoscowRussia

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