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Sunday, May 15, 2016

Why Quantum Gravity

There is not yet a quantum gravity that is consistent with the gravity of general relativity (GR) and this is fundamentally because the determinate GR has perfectly defined geodesic paths for all sources. In our quantum universe, however, there are no absolutely determinate paths and it turns out that GR says nothing about the paths of objects at very small Planck scale and GR says nothing about the paths of objects inside of the event horizon of a black hole. Quantum gravity simply does not have completely determinate futures and yet GR provides absolutely determinate paths with well-defined distortions of space and time.

In contrast to GR, discrete aether is a quantum gravity (QG) that is completely consistent with GR within its limits and QG further defines object futures at both the Planck scale as well as at the black hole scale.

The deflection of starlight by the sun, d, occurs at about twice the value expected by classical Newton's gravity and the mass-equivalent energy of light. Science has known this for many decades. Einstein's general relativity explained this extra deflection in the figure below as a first order expansion of the GR equation that shows how gravity distorts space and time. That is, given the equivalent mass of light, GR predicts twice the deflection of Newton’s classical gravity and numerous measurements validate that fact.

Discrete aether and its QG provide a different explanation for starlight deflection by the sun, but that prediction also agrees with measurements since quantum effects show a factor of two doubling for both charge and gravity. For the quantum spin of an electron the gyromagnetic ratio, g, also has about twice the classical spin of a charged sphere. For an electron, the gyromagnetic ratio is how it oscillates in a magnetic field as 
where e is electron charge, me electron mass, and the g-factor comes from quantum spin along with a perturbation series due to quantum field self energy as
In quantum gravity (QG), starlight photon deflection is how the spin of light oscillates in a gravity field and so starlight QG deflection conforms to the same g-factor as charge force as

So quantum gravity and its self energy actually have the same g value for light deflection as that of quantum spin. The quantum g-factor of about two comes from the complementary phases of quantum spin states  of a photon and the photon self-energy means that the effect is not exactly two. In effect, an electron spin can be up or down in a magnetic field and that difference corresponds to the frequency or energy of the quantum transition from spin up to down.

The up or down duality of quantum phase has no classical meaning in GR and in effect quantum spin doubles the frequency or energy of a quantum action from the action of a classical spinning charge. The distortion of space and time embodied within GR emulates the factor of two that fundamentally derives from the nature of QG.

A classical spinning charge will only orient itself up as a precession along a magnetic field and there is no meaning for up versus down in the absence of a magnetic field since the spinning charge would have opposite phase from up and down. A rotating classical charge in a magnetic field radiates with a classical frequency or energy that is one-half of the quantum frequency and a classical spinning charge then slows down as it radiates and loses energy. A quantum spin reorients when it radiates, but since a quantum spin exists in a superposition state of both discrete spin states, a quantum spin cannot radiate without some kind of electric or magnetic field. The meaning for a classical transition to a down spin is to spin in the opposite phase, changing the phase of its radiation by p. But a classical spinning charge always precesses along the magnetic field lines for both spin phases.

The rotation of a quantum charge as spin results in a quantum precession frequency that is twice the classical precession frequency of a classical rotating charge in a magnetic field. The quantum precession frequency is defined by g ~ 2, and is consistent with measurements while the classical precession frequency is likewise consistent with radiation of macroscopic charge rotation in a magnetic field. This factor of two turns out to be the key for both quantum gravity as well as quantum spin and g ~ 2 ends up predicting all of the same effects as are observed and predicted by the spacetime distortions of GR.

In effect, the classical radiation of opposite phase would slow the rotation down and eventually reverse it and that total energy would be twice the inertial energy of the original spin. The classical object would not change direction up or down, but the sense of its spin. It would now radiate just as the first spin but with a different phase. Therefore a quantum spin is like a classical spin the is in resonance with an external field oscillation.

There is a very fundamental reason for the correspondence between quantum spin and quantum gravity; a distorted spacetime emerges from QG just as GR distorts spacetime to first order. However, QG and its biphotonic exchange particle, the graviton, have quantum exchange and phase coherence just like quantum charge.

Einstein showed that gravity distorts the space and time around bodies and that distortion determines the paths or geodesics of those bodies as just straight lines in the distorted spacetime. Therefore there is no such thing as a gravity self energy since that gravity self energy is really just stored in the spacetime distortion, but there is still a g = 2 deflection.

In QG, the quadrupole of a gravity biphoton also shows quantum spin states, but now with S = 2 instead of S = ½ and the quantum gravity self energy further alters a body’s gravity field with the rotating quadrupole biphotons of a matter body by a factor of two. In effect, the biphoton quadrupole also oscillates up or down in a gravity field and so the photon deflection is twice the classical expectation based on mass energy equivalence. In addition, there is a gravity self energy of a photon that further increases the effect of starlight deflection from the expectations of Newton’s classical gravity and the mass equivalence of light.

The notions of continuous space and time emerge as dimensionless scalings; time from an electron orbit period and space from the electron charge diameter. Distortions of space and time simply emerge from the measurements of light pulse time delays and color shifts from objects and action. Every object has the properties of light pulse time delay and color shift and it is from those measurements of objects with light that both Newton and GR notions of continuous space and time emerge. Thus spacetime appears naturally distorted by GR since the object time delay and color shift by quantum gravity show the same effects as classical time delay and color shift.

The figure below shows how gravity biphotons relate to the photon exchange bonds of charge for atoms and molecules. The hydrogen charge bond is an exchange particle of Rydberg energy at 3.3 fs period, and that exchange particle is in resonance with the electron in hydrogen with a period tB of 1.1e-21 s, the ratio of which what eventually defines c as 3e8 m/s along with a charge radius. The orbital period of the electron relative to the period of the universe is the scaling that defines gravity as proportional to charge force.

The bonding state of gravity is between the source and the universe and so in a sense, all reality is real because of gravity. The effects of a biphoton are in effect due to the symmetry of the wrapped universe and not really due to the time or space between the CMB and matter. The bonding states of charge are between a source and observer and so without an observer, the universe is the ultimate observer, wrapped by symmetry back onto itself. An observer absorbs a photon and that measurement represents a bonding state that makes the source real. A photon released to the universe represents the same reality for the same source, but at a much greater time scale wrapped onto the present time and space.