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Was the Speed of Gravity Successfully Measured?

ABSTRACT: This paper shows mathematically and experimentally why it is highly unlikely that the speed of gravity was successfully measured....

Friday, July 7, 2017

How to Derive Dark Energy, Etc. From Heisenberg's Uncertainty Principle

This post is a sequel to "Dark Energy In - Dark Energy Out = Gravity." Today we are going to find the relationship between Hubble's observations (i.e. Hubble's constant), dark energy and gravity--and we are going to derive it from Heisenberg's uncertainty principle. Let's kick things off with defining the variables:

Equation(and inequality) 1 below is the energy-time version of Heisenberg's uncertainty principle:

The idea here is to build an expanding universe by taking a bottom-up approach. We build the very large by starting with something very small. We derive a simple energy equation (see equation 4 below).

Note the change in energy or energy difference variable on the left side of equation 4. We can substitute some arbitrary energy (E) minus the ground state (epsilon * E):

Let's bring all the terms to the left side and derive equation 10 below:

We now have an energy squared minus another energy squared minus the ground state squared equals the final energy (Ef) squared. We get equations 11 and 12 below by using Planck's reduced constant (h-bar), the wave number (k), and the light-speed constant (c)--and making substitutions.

Checking the units, we find equation 12 to be eerily similar to Einstein's field equations. Not a bad thing, by the way. It allows us to rewrite equation 12 to get 13:

Multiply both sides of 13 by the volume (D^3) to get 14 and 15:

Multiply both sides by Hubble's constant (H):

Multiply both sides by c^2/D:

From here we can derive 21 below:

Equation 21 is a power equation that has two components: the force of gravity, and the velocity the universe is expanding at distance D. However, this is only part of the story. Equation 21 does not take into account the mass density of spacetime or vacuum. A more complete equation is 22:

Note that as distance D increases, Volume V increases. The vacuum-mass-density gravity grows(dark matter effect) while classical Newton's gravity shrinks. If we utilize the cosmological constant, we can see a more precise relation between gravity and dark energy. First, we need to go back a few steps and work the cosmological constant into the math. Let's start with equation 13 and work forward:

A note re: equation 23. We want epsilon/D^2 to represent a ground state and a ground state does not increase or decrease, so epsilon must be proportionate to D^2. Thus we can set the term equal to the cosmological constant.

Equation 29 reveals something interesting: the instant velocity of expansion (HD) appears to be unaffected by gravity. The gravity in the numerator seems to be proportionate to the gravity in the denominator. This suggests the big crunch ain't gonna happen. But wait! It gets better. Suppose the universe expands to a point where Newtonian gravity (GM/r^2) is insignificant? We can drop it and get equations 30 and 31:

Look at equation 31. The only variable that isn't a constant is distance D. Now here's the awesome part: When D increases, so does gravity and so does the rate of expansion. The expansion rate (HD) is a function of gravity ... or is it dark energy? They both appear to be two sides of the same coin. And why not? They are both components of vacuum power (P).

Update: We can take equation 31 and derive the value of the cosmological constant:

Sunday, July 2, 2017

Deriving Hubble's Constant, Etc.

Here is one way to derive Hubble's constant. First, let's define the variables:

We start with an arbitrary total distance (D) which is the product of a small coefficient (a) and distance (x). As x grows, so does D, and vice versa. At equation 2 below, we find the time derivative of D (which equals V).

At equation 3 above, we multiply the left side by x/x. At equations 4 through 7 we do some algebraic slight of hand to derive Hubble's constant (H). Equation 8 shows the approximate numerical value of Hubble's constant. Its units are s^-1--the reciprocal of time.

Next, let's see what its relationship is to proper or relativistic time. To accomplish this we use 1/H in lieu of time (t).

Equation 14 shows how Hubble's constant stays constant. If proper time t' changes, so does variable u. The two are proportionate. Equation 15 below is the velocity the universe expands at distance D. When D increases, so does t'. You would think this amounts to a constant velocity for any distance D, But variable u also increases and offsets t'. As a result, velocity increases as D increases.

Equations 16 through 20 express distance D in terms of time (ctD). When examining the relativistic consequences of Hubble's constant, it is important to recognize that the time that makes up distance (ct) is a function of D only. Whereas t' is a function of D, mass and energy. High mass, for example, will contract time t to time t', and will contract length from ct to ct'. But distance D equals ct or act'; i.e., it can be measured out even if the units shrink due to relativity.