- #36
JPBenowitz
- 144
- 2
I think a large issue with the hypothetical device we were contemplating is that we did not take into account the signal itself. Suppose we send a single photon with a wavelength λ[itex]_{}0[/itex] around a CTC, if the device detects a wavelength λ[itex]_{}0[/itex] + λ then we will represent this as a 1 if the device detects a wavelength λ[itex]_{}0[/itex] - λ then we will represent this as a 0. Because the proper time of light is zero we are forced to choose a hypothetical observer outside of the CTC that measures the proper time of our photons journey. If the proper time is sufficiently large enough such that the scale factor of the universe caused λ[itex]_{}0[/itex] = (+/-)λ then the photon was destroyed. The information the photon carried dissipated along the CTC.