Saturation Problem of a Sum Rule of Scalar and Pseudoscalar Spectral Functions
- 28 August 1967
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review Letters
- Vol. 19 (9) , 537-539
- https://doi.org/10.1103/physrevlett.19.537
Abstract
A sum rule of the scalar and pseudoscalar spectral functions is studied as a possible test for the commutation relations between the fourth component of the axial-vector current and the scalar and pseudoscalar densities. Approximating the spectral functions by the one-pion and two-pion contributions, one finds the sum rule to be badly violated.Keywords
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