On Saturday, August 31, 2019 at 4:14:55 AM UTC-5, smitra wrote: > > On 31-08-2019 03:33, Lawrence Crowell wrote: > > On Friday, August 30, 2019 at 7:29:27 PM UTC-5, Bruce wrote: > > > >> On Sat, Aug 31, 2019 at 10:12 AM 'Brent Meeker' via Everything List > >> <[email protected]> wrote: > >> > >> I think Wald says that for the inertial observer it appears that the > >> accelerated detector/thermometer is interacting with the vacuum and > >> producing the particles around it that provide the clicks and > >> temperature. > > > > I think the idea that the detector interacts with the vacuum is > > misguided. The point is that the accelerated frame has a different > > vacuum -- it is not that it interacts with the inertial vacuum, which > > would tend to suggest that there is only one vacuum. The vacuum is > > important for the definition of particle states -- different vacua > > have different definitions of particle states. Hence the vacuum of the > > accelerated observer is a thermal sea, relative to the quiescent > > vacuum of the inertial observer. > > > > Bruce > > > > If you think about it there should be a way this works from the > > perspective of the inertial frame. Physics should not depend on > > frames, even if we are talking about the difference between an > > inertial and accelerated frame. > > > > LC > > From the point of view of an observer in the inertial frame it is the > dynamic Casimir effect. > > Saibal >
It is related to that. The dynamic Casimir effect involves and oscillating mirror that changes the vacuum ZPE in the cavity. This can generate particles out of the vacuum in the laboratory. Experiments on dynamic Casimir effect have been done. Any body has a quantum atmosphere, as Wilczek calls it, and that body under constant acceleration for any inertial observer the leading edge interacts with the vacuum with a more UV shifted quantum atmosphere and the trailing edge has a more IR shifted quantum atmosphere. LC -- You received this message because you are subscribed to the Google Groups "Everything List" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To view this discussion on the web visit https://groups.google.com/d/msgid/everything-list/43e8bc7a-d142-4b62-ba00-2f15cfe7f113%40googlegroups.com.
