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Lattice QCD with strong external electric fields.

Arata Yamamoto1

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Summary
This summary is machine-generated.

Particle generation in lattice quantum chromodynamics (QCD) is studied using a strong electric field. Charged particle pairs are produced via the Schwinger mechanism, overcoming the insulating vacuum and competing with color confinement.

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Area of Science:

  • * Theoretical particle physics
  • * Quantum chromodynamics (QCD)
  • * Strong electric field phenomena

Background:

  • * The behavior of quantum vacuum under extreme conditions is not fully understood.
  • * Simulating electric fields in lattice QCD is computationally challenging due to the sign problem.
  • * The Schwinger mechanism describes particle-antiparticle pair production in strong fields.

Purpose of the Study:

  • * To investigate particle generation in lattice QCD under a strong electric field.
  • * To circumvent the sign problem associated with Minkowskian electric fields.
  • * To explore the interplay between electric field-induced particle production and color confinement.

Main Methods:

  • * Employing lattice QCD simulations.
  • * Utilizing an "isospin" electric charge to avoid the sign problem.
  • * Analyzing the breakdown of the insulating vacuum.

Main Results:

  • * Demonstrated particle generation from the vacuum by a strong electric field.
  • * Confirmed the Schwinger mechanism's role in pair production.
  • * Investigated the competition between electric field effects and color confinement.

Conclusions:

  • * Strong electric fields can induce particle generation in lattice QCD.
  • * The "isospin" electric charge approach is a viable method to study these phenomena.
  • * The balance between electric field strength and color confinement dictates particle production outcomes.