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Forums
Physics
Special and General Relativity
Metric for Single Photon: What's Best?
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[QUOTE="pervect, post: 6012735, member: 14402"] A photon isn't classical, and GR is a classical theory. But you might be looking for the [URL='https://en.wikipedia.org/w/index.php?title=Aichelburg%E2%80%93Sexl_ultraboost&oldid=844656641']Aichelburg-Sexl[/URL] ultraboost. But I might have misunderstood your question. I think the wiki page also talks about how the AS ultraboost can be derived as the limit of the metric of a gaussian pulse. Typically these solutions are actually for a null dust - which may not have exactly the same stress-energy tensor as a pulse of light, but has many of the same features. A [URL='https://en.wikipedia.org/w/index.php?title=Null_dust_solution&oldid=811451243']null dust[/URL] has the formal definition of ##T_{ab} \propto k^a k^b## where k is a null vector. It's informally described as the stress energy tensor (or the associated space-time geometry) associated with some sort of radiation moving at the speed of light. [/QUOTE]
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Physics
Special and General Relativity
Metric for Single Photon: What's Best?
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