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jacquesm
on Oct 10, 2023
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Warp drive's best hope dies, as antimatter falls d...
If they don't lose momentum then there is no interaction (in order for any kind of interaction you need to lose some energy). Momentum is pretty much all a photon has and it could conceivably toss off much lower energy photons to shed that momentum.
nyssos
on Oct 10, 2023
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> in order for any kind of interaction you need to lose some energy
This is not true, elastic scattering is very common.
jacquesm
on Oct 10, 2023
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Elastic scattering between photons and gravitational fields?
nyssos
on Oct 10, 2023
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You don't generally talk about "scattering" off a field, but photons and gravitons can scatter off each other, sure.
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