I'm back! Sorry for the gap in blogs, but it was a natural time to pause. In my opinion I have now provided enough evidence that physicists should be excited about quantised inertia. Also I've reached the stage where I need to develop more collaborations with galaxy modellers and lab experimenters (some are already in place). So, here is an attempt to convince others to join in:
We're all familiar with the idea of inertia, that objects in deep space once pushed keep going, but no-one has ever explained why it happens. Quantised inertia explains it for the first time by saying that if an object accelerates one way, then relativity makes a horizon appear in the other direction since information finds it harder to get to the object from that direction. This horizon damps the quantum vacuum (Unruh radiation) on that side of the object, causing a net push by radiation from the other side. This predicts inertia very well (see the 1st reference). Note that this is an elegant collaboration between relativity and quantum mechanics, and is amusing because for over 100 years people have assumed that relativity doesn't talk to quantum mechanics, and here they are cheekily in cahoots behind the scenes.
So where's the proof? Over the last ten years I have published 20 peer-reviewed papers on the theory including various bits of evidence. The most important piece of evidence is that quantised inertia predicts the rotation of galaxies without dark matter and without any adjustment (See the 2nd reference). It even predicts the behaviour of galaxies in the early universe, a part of the cosmos that no other theory can reach. It also predicts myriad interesting anomalies including the flyby anomaly, the cosmic acceleration, the low-l CMB anomaly, the Tajmar effect and the emdrive.
So how can we utilise quantised inertia? The most dramatic possibility is in the horizon drive (of which the emdrive is a weak example). The idea is simple. We can use the same trick that nature uses to produce inertia. Instead of relying on relativity to make horizons when objects accelerate away, instead make an object which makes its own horizon. Then we will have a fuel-less propulsion system. Where is the energy coming from? It is coming from Heisenberg's uncertainty principle dp.dx~hbar. Make an artificial horizon and you reduce the uncertainty in position, dx, so dp, new momentum and energy, appear (see the 3rd reference below). There is already evidence for the horizon drive since quantised inertia predicts the emdrive.
As you can see the evidence and applications for quantised inertia are coming together nicely now. The evidence for quantised inertia makes the horizon drive, which would open the galaxy to us, more than a speculation, and this application surely makes it worthwhile to look into the theory (which is admittedly still incomplete, please help!). The references below represent my most up to date summaries of the theory and the evidence.
McCulloch, M.E., 2013. Inertia from an asymmetric Casimir effect. EPL, 101, 59001. Link
McCulloch, M.E., 2017. Galaxy rotation from quantised inertia and visible matter only. Astrophys. & Space Sci., 362,149. Link
McCulloch, M.E., 2016. Quantised inertia from relativity & the uncertainty principle, EPL, 115, 69001. Link