Plasma neutrino energy loss due to the axial-vector current at the late stages of stellar evolution

LIU Jing-Jing

doi:10.1088/1674-1137/33/10/003

Chinese Physics C> 2009, Vol. 33> Issue(10) : 834-837 DOI: 10.1088/1674-1137/33/10/003

Plasma neutrino energy loss due to the axial-vector current at the late stages of stellar evolution

LIU Jing-Jing ^,

(Department of Physics, Qiongzhou University, Wuzhishan 572200, China)

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Abstract：
Based on the Weinberg-Salam theory, the plasma neutrino energy loss rates of vector and axial-vector contributions are studied. A ratable factor of the rates from the axial-vector current relative to those of the total neutrino energy loss rates is accurately calculated. The results show that the ratable factor will reach a maximum of 0.95 or even more at relatively higher temperature and lower density (such as ρμ_e<10⁷ g/cm³). Thus the rates of the axial-vector contribution cannot be neglected. On the other hand, the rates of the axial-vector contribution are on the order of ~0.01% of the total vector contribution, which is in good agreement with Itoh's at relatively high density (such as ρμ_e>10⁷ g/cm³) and a temperature of T≤10¹¹K.

References

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LIU Jing-Jing. Plasma neutrino energy loss due to the axial-vector current at the late stages of stellar evolution[J]. Chinese Physics C, 2009, 33(10): 834-837. doi: 10.1088/1674-1137/33/10/003

LIU Jing-Jing. Plasma neutrino energy loss due to the axial-vector current at the late stages of stellar evolution[J]. Chinese Physics C, 2009, 33(10): 834-837. doi: 10.1088/1674-1137/33/10/003 shu

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Received: 2008-10-20
Revised: 2008-12-20

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沈阳化工大学材料科学与工程学院沈阳 110142

Plasma neutrino energy loss due to the axial-vector current at the late stages of stellar evolution

Corresponding author: LIU Jing-Jing,

(Department of Physics, Qiongzhou University, Wuzhishan 572200, China)

Received Date: 2008-10-20

Accepted Date: 2008-12-20

Available Online: 2009-10-05

Abstract:

Based on the Weinberg-Salam theory, the plasma neutrino energy loss rates of vector and axial-vector contributions are studied. A ratable factor of the rates from the axial-vector current relative to those of the total neutrino energy loss rates is accurately calculated. The results show that the ratable factor will reach a maximum of 0.95 or even more at relatively higher temperature and lower density (such as ρμ_e<10⁷ g/cm³). Thus the rates of the axial-vector contribution cannot be neglected. On the other hand, the rates of the axial-vector contribution are on the order of ~0.01% of the total vector contribution, which is in good agreement with Itoh's at relatively high density (such as ρμ_e>10⁷ g/cm³) and a temperature of T≤10¹¹K.

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Plasma neutrino energy loss due to the axial-vector current at the late stages of stellar evolution

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