The refractive index of curved spacetime II: QED, Penrose limits and black holes
The refractive index of curved spacetime II: QED, Penrose limits and black holes
复制标题
弯曲时空的折射率 II:QED、彭罗斯极限和黑洞
DOI:
10.1088/1126-6708/2009/08/089
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发表时间:
2009
影响因子:
5.4
通讯作者:
Hollowood T
中科院分区:
文献类型:
--
作者:
Hollowood T
This work considers the way that quantum loop effects modify the propagation of light in curved space. The calculation of the refractive index for scalar QED is reviewed and then extended for the first time to QED with spinor particles in the loop. It is shown how, in both cases, the low frequency phase velocity can be greater than c, as found originally by Drummond and Hathrell, but causality is respected in the sense that retarded Green functions vanish outside the lightcone. A``phenomenology''of the refractive index is then presented for black holes, FRW universes and gravitational waves. In some cases, some of the polarization states propagate with a refractive index having a negative imaginary part indicating a potential breakdown of the optical theorem in curved space and possible instabilities.
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影响因子:
4.4
作者:
T. Hollowood;G. Shore
通讯作者:
G. Shore
DOI:
10.1103/physrevd.47.4362
发表时间:
1993
期刊:
Physical review. D, Particles and fields
影响因子:
--
作者:
Szekeres;Iyer
通讯作者:
Iyer
影响因子:
5.4
作者:
G. Veneziano
通讯作者:
G. Veneziano
影响因子:
5.4
作者:
D. Amati;M. Ciafaloni;G. Veneziano;G. Veneziano
通讯作者:
G. Veneziano
影响因子:
2
作者:
G. Shore
通讯作者:
G. Shore