Title

Breit Hamiltonian and Quantum Electrodynamic Effects for Spinless Particles

Abstract

We describe a simplified derivation for the relativistic corrections of order α4 for a bound system consisting of two spinless particles. We devote special attention to pionium, the bound system of two oppositely charged pions. The leading quantum electrodynamic (QED) correction to the energy levels is of the order of α3 and due to electronic vacuum polarization. We analyse further corrections due to the self-energy of the pions and to recoil effects, and we give a complete result for the scalar-QED leading logarithmic corrections which are due to virtual loops involving only the scalar constituent particles (the pions); these corrections are of the order of α5 ln α for S states.

Department(s)

Physics

Keywords and Phrases

Electron Energy Levels; Hamiltonians; Polarization; Vacuum; Quantum Electrodynamics (QED); Quantum Electronics

International Standard Serial Number (ISSN)

0953-4075

Document Type

Article - Journal

Document Version

Citation

File Type

text

Language(s)

English

Rights

© 2002 IOP Publishing, All rights reserved.

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