Drell-Hearn sum rule from equal-time commutators

Pradhan, T. ; Khare, A. V. (1972) Drell-Hearn sum rule from equal-time commutators Physical Review D, 5 (2). pp. 496-497. ISSN 0556-2821

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Official URL: http://prd.aps.org/abstract/PRD/v5/i2/p496_1

Related URL: http://dx.doi.org/10.1103/PhysRevD.5.496


It is shown that the Drell-Hearn sum rule can be obtained from the equal-time commutator [D+(t),D-(t)]=0, where D±(t)=∫d3xx1±ix2/√2ρ(x), ρ(x) being the electric charge density.

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