What is a one sentence summary of quantum electrogravity
(QEG)?
Quantum electrogravity (QEG) is quantum gravity combined with
quantum electrodynamics (QED), in absolute space and time.
What is absolute space and time?
Absolute space is a fixed
3-dimensional (x,y,z) coordinate system spanning all of space. Absolute time is
an independent variable that increments at the same rate everywhere. Absolute
space and time is the coordinate system used in pre-relativistic classical
mechanics, in pre-relativistic quantum mechanics, in the aether theories, and in
most 3D computer games.
Is absolute space and time the same as flat spacetime?
No. Flat
spacetime allows for Lorentz transformations to convert space into time and
vice-versa, but Lorentz transformations are impossible in absolute space and
time because space and time are totally independent and cannot be converted into
each other. Flat spacetime exists only in the absence of gravity, but absolute
space and time is the stage on which gravity plays out. Flat spacetime,
however, is still a useful approximation in cases where gravity can be
ignored.
Is QEG Lorentz invariant?
No.
If QEG can be derived directly from general relativity, how can QEG not be
Lorentz invariant?
Because general relativity itself is not Lorentz invariant,
except in very special cases. Two special cases where general relativity is
Lorentz invariant are where there is no gravity (in flat spacetime), or in
infinitesimally small regions in spacetime. General relativity, in general,
does not allow for Lorentz transformations between two points that have a finite
separation in spacetime.
Is QEG Galilean invariant?
No. Galilean invariance, like Lorentz
invariance, requires that the laws of physics appear the same in all inertial
frames of reference. But the definition of inertial frame of reference
precisely excludes the effects of gravity (e.g. inside a falling elevator). In
QEG, an inertial frame of reference is physically defined by gravitons
comoving through a fixed coordinate system.
Is QEG an aether theory?
Yes. The aether was a fixed frame of
reference, like absolute space and time. QEG unites the aether theories with
general relativity and electromagnetism and quantum mechanics.
Why didn't anyone develop QEG back in the days of aether
theories?
I don't know, but I suspect it may have
been because they wanted to construct a theory similar to electromagnetism.
Gravity is analogous to the electric field, so I think they might
have been considering a momentum field analogous to the magnetic field.
Momentum fields are insufficient; QEG adds a matrix S field which in
simple circumstances can be viewed as a force or acceleration field.