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Noncompeting channel approach to pair creation in supercritical fields
1State Key Laboratory for GeoMechanics and Deep Underground Engineering, China University of Mining and Technology, Beijing 100083, China.
Strong-field pair creation for bosons and fermions is studied. A new collective time scale emerges when multiple bound states are embedded in the negative energy continuum, influencing long-time dynamics.
Area of Science:
- Quantum Field Theory
- High-Energy Physics
- Computational Physics
Background:
- The Dirac and Klein-Gordon equations describe relativistic particles.
- Strong external fields can induce particle-antiparticle pair creation from vacuum.
- Understanding pair creation dynamics is crucial in high-energy physics.
Purpose of the Study:
- To investigate strong-field induced pair creation for bosons and fermions.
- To explore the role of embedded bound states in pair creation dynamics.
- To identify new time scales governing long-time behavior.
Main Methods:
- Solving Dirac and Klein-Gordon equations on a space-time grid.
- Employing complex scaling of the Hamiltonian.
- Analyzing the influence of embedded bound states in the negative energy continuum.
Main Results:
- The study predicts a new collective time scale for pair creation.
- This time scale emerges when multiple bound states are embedded in the negative energy continuum.
- Long-time pair creation dynamics are determined collectively by the sum of widths of all embedded states.
Conclusions:
- The complex scaling technique effectively predicts long-time dynamics of pair creation.
- Multiple embedded bound states introduce a collective behavior not dominated by a single channel.
- This collective behavior introduces a novel time scale in relativistic quantum systems.
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