Tachyons: paper spells out how to find them

even subluminal relativisitic velocity has time travel implications. so you could substitute a regular particle for a woodward wormhole in his travelling wormhole illustration and you would find that from the particles point of view it is travelling in time backwards in the reference frame of observers outside it's reference frame.

a meson for example has a very short lifetime. but a relativistic meson exists longer the faster it goes. mesons typically last femto seconds. but can last seconds or minutes if travelling fast enough. because it's time passes slower compared to observers. the different rates of time are real and not imaginary. the upshot is if the meson reversed course it could travel in time in the observer's frame of reference. there are limits. it could not arrive before it departed; but there is nothing to prevent it from arriving a split second after it departs. this involves no paradox.

woodward uses a wormhole as the particle and the result is a bridge of time and space between a distant location and time to this location and time. one that does not in and of itself violate causality or any other principle of physics. it does not violate the light speed limit. it does not allow altering of causality ordering conjectures.

in woodward's example it connects a star 1200 light years away with the a local space and allows the bridge to be traversed 1198 years before the wormhole should arrive according to stationary observers. in the travelling wormhole's point of view it reaches it's destination in about 59 weeks if the wormhole travels at 99 percent the speed of light. so after 59 weeks some one on this end of the wormhole would be able to see the destination as the wormhole distal end would see it. moreover you could at that point step through it and arrive at the distal end of the wormhole at the target star system. and furthermore you could then step back through and instantly be back here. all of this before the wormhole could even possibly get where it is going. and none of that violates relativity or causality locally.

there are some severe limitations to this and it is therefore assumed that anything beyond the above is likely to engage a cosmic back reaction that would collapse not only that wormhole but any other wormhole between the the two points or back tracing any segment of the route of that wormhole within that 1200 light year range. explosively. recursive wormholes that would allow travel before the inception point of the time portal are still forbidden even in the stretched version of relativity and causality that allows traversible wormholes anyway. we won't really know until a theory of quantum gravity is formulated and accepted.

my point at introducing woodward was that moving particles (not wormholes) also experience time travel and this is accepted science. travelling particles last longer than they are supposed to. that is a fact.time dilation is time travel. and that these time travelers are accepted and observed in mainstream physics. observing time travel effects is not beyond the abilities of scientific experimentation.

The thing is, the behavoir (or existence) of something like this might not be revealed with standard means of measuring. It's because of how the imaginary set interacts in the expression of complex number. They stay separate from the real group until multiplied into a negative product which can then interact with the real set.

Vector math relating to this is a little wierd to me though, but it's still interesting subject even if I can't quite get my mind around it. It's one of those things as a side topic of trig or calc in upper level high school math, and not delved into much unless you college level STEM courses.

So far the one real-world applications thing I know of making good use of complex math using imagninary numbers involves electrical systems and electronics. Mostly with magnetic fields where solenoids or induction coils are at work, but it also has some role in semi-conductor theory. Stuff to do with electron holes and transistors.

So the thing is, imaginary matter may produce imaginary fields, thus gravitational (and some other interactions) wouldn't occur at all within the set of normal matter. However there may be some conditions where imaginary fields could be produced by specific real conditions allowing for feedback such that imaginary matter could then be measured.

Since some electronics and their workings have the math behind them needing imagninary numbers to work, they may be producing imaginary fields. However this one aspect isn't being exploited fully. It's either used to zero out stuff, or account for things like efficiency losses that don't seem to show up as heat from resistance.

The only subset of electrical stuff that seemed to push this aspect is scalar technology, but there's so much B.S. relating to that topic it'll take some work to separate good from bad. And most scientists wouldn't want to touch it as it's reputation is tarnished in the same way other fringe science stuff is. However it seems like some of its approches are what would produce the kind of conditions at a macro level in order to get measurable results from imaginary field interactions with any imaginary matter that may exist. (So basically you'd need to run something like a regular particle accelerator with some scalar device trying to influence the target area and hopefully get measurable results. The problem though is making sure EM and RF stuff from the scalar device isn't what's affecting the measurement systems, ensuring you'd have a clean measurement of an imaginary matter interaction in your data. Again the problem with this is most people with means to do this with proper scientific method wouldn't want to touch scalar stuff with a 10ft pole, let alone have such equipment in their lab.)

Sometimes I think some technologies will remain out of public domain, not because they're terribly difficult to attain, but because there's a social stigma around them. Government and MIC research probably has less qualms about it though (try anything approach if plausible enough), so there's likely been research on the black budget end. Secrets and the stories out there always leave me wondering about it.

Yah ;i hear you but...QED

in QED the value of the mass of every bit of matter is negative before renormalization. but after renormalization you have life the universe and everything. So the answer, of course; is 42.



oh and i think something like you proposed is being considered. Someone proposed a way to see if the theory of mirror neutrons was true by exposing regular neutrons to a mirror sector magnetic field. There is a convenient way to get around the fact that we cannot as yet generate such a field. in that article i posted a few posts ago; it is assumed that mirror matter may get trapped and accumulated on earth since it does interact very weakly via inelastic collisions and gravitationally with regular matter. and any significant accumulation will have a mirror magnetic field.

This interpretation is subject to the condition that Earth possesses a mirror magnetic field on the order of 0.1 Gauss. Such a field could be induced by mirror particles floating around in the galaxy as dark matter. Hypothetically, Earth could capture the mirror matter via some feeble interactions between ordinary particles and those from parallel worlds.

www.sciencedaily.com...