FERMION PRODUCTION IN THE BACKGROUND OF MINKOWSKI SPACE CLASSICAL-SOLUTIONS IN SPONTANEOUSLY BROKEN GAUGE-THEORY

被引:21
作者
FARHI, E
GOLDSTONE, J
GUTMANN, S
RAJAGOPAL, K
SINGLETON, R
机构
[1] MIT,DEPT PHYS,CAMBRIDGE,MA 02139
[2] NORTHEASTERN UNIV,DEPT MATH,BOSTON,MA 02115
[3] HARVARD UNIV,LYMAN LAB PHYS,CAMBRIDGE,MA 02138
[4] BOSTON UNIV,DEPT PHYS,BOSTON,MA 02215
来源
PHYSICAL REVIEW D | 1995年 / 51卷 / 08期
关键词
D O I
10.1103/PhysRevD.51.4561
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
We investigate fermion production in the background of Minkowski space solutions to the equations of motion of SU(2) gauge theory spontaneously broken via the Higgs mechanism. First, we attempt to evaluate the topological charge Q of the solutions. We find that for solutions Q is not well defined as an integral over all space-time. Solutions can profitably be characterized by the (integer-valued) change in the Higgs winding number ΔNH. We show that solutions which dissipate at early and late times and which have a nonzero ΔNH must have at least the sphaleron energy. We show that if we couple a quantized massive chiral fermion to a classical background given by a solution, the number of fermions produced is ΔNH, and is not related to Q. © 1995 The American Physical Society.
引用
收藏
页码:4561 / 4572
页数:12
相关论文
共 14 条
[1]  
Farhi E., Khoze V.V., Rajagopal K., Singleton R., Phys. Rev. D, 50, (1994)
[2]  
Jackiw R., Rebbi C., Phys. Rev. Lett., 37, (1976)
[3]  
Callan C., Dashen R., Gross D., Phys. Lett., 63 B, (1976)
[4]  
Phys. Rev. D, 49, (1994)
[5]  
Manton N., Phys. Rev. D, 28, (1983)
[6]  
Klinkhamer F., Manton N., Phys. Rev. D, 30, (1984)
[7]  
Yaffe L., Phys. Rev. D, 40, (1989)
[8]  
Manton N.
[9]  
Nolte G., Kunz J., Phys. Rev. D, 51, (1995)
[10]  
Weinberg E., Phys. Rev. D, 24, (1981)