RADIATION OF CLASSICAL SCALAR FIELDS FROM A POINT SOURCE - M-]0 LIMIT OF MASSIVE THEORY VS M=0 THEORY

被引:3
作者
CAWLEY, RG
机构
[1] U. S. Naval Ordnance Laboratory Silver Spring
关键词
D O I
10.1016/0003-4916(69)90337-6
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
Radiation of a massive classical scalar field from a point source is studied in the mass zero limit and compared with the radiation emitted in a mass zero theory. The total radiated energy momentum is the same in both theories, but the rate cannot be got in the massive theory. The massive theory admits a particle number-probability interpretation, and a speed distribution and energy distribution can be found. The energy distribution goes like ω-(2n+1) at high energies, the value of n depending on smoothness properties of the source world line. In the low ω region it is proportional to ω-1 until (ω - m) m ≪ 1, where a strong suppression factor proportional to ν2 dominates. But despite this fact the radiated number diverges like log m-1 owing to contributions from particles with energies O(m0) but with ultrarelativistic speeds. Other interesting features have to do with speed distribution properties in the m → 0 case. © 1969.
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页码:149 / &
相关论文
共 4 条
[1]  
Cawley R.G., 1968, INT J THEOR PHYS, V1, P153
[3]  
ROHRLICH F, 1965, CLASSICAL CHARGED PA, pCH5
[4]  
Schild A., 1960, RIV NUOVO CIM, V1, P127