Pseudoscalar versus pseudovector pion-nucleon couplings in the nucleonic axion bremsstrahlung rate of neutron-star matter.
Pseudoscalar versus pseudovector pion-nucleon couplings in the nucleonic axion bremsstrahlung rate of neutron-star matter.
复制标题
中子星物质核轴子轫致辐射率中的赝标量与赝矢量π介子-核子耦合。
DOI:
10.1103/physrevd.39.2120
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发表时间:
1989
期刊:
影响因子:
--
通讯作者:
Iwamoto
中科院分区:
文献类型:
--
作者:
Iwamoto
The difference between the pseudoscalar and pseudovector ..pi..N couplings are examined in the context of the nucleonic axion bremsstrahlung rate. With the pseudovector coupling, eight diagrams contribute to the matrix element for axion bremsstrahlung. A naive use of the pseudoscalar coupling for these eight diagrams, on the other hand, gives a different matrix element and overestimates the energy-loss rate of degenerate neutron-star matter via neutron-neutron axion bremsstrahlung typically by an order of magnitude.