From Wormhole Theory to a Communication Geometry
September 12, 2026
The Wormhole Communication project has reached an important transition.
Until now, much of the public Research Journal has focused on defining the problem and establishing how the research should proceed.
Can communication be investigated independently from propulsion?
Can an enormous interstellar problem be reduced to a laboratory-scale question?
What would constitute evidence?
What would falsify a model?
And how do we prevent an interesting mathematical result from being mistaken for a physical discovery?
The latest Wormhole Communication work has begun moving from those broad questions toward a specific geometry that can be analyzed mathematically.
That model is designated:
WC-MGT-1 — Minimum Geometry Throat, Model 1.
The question behind it is deliberately narrow:
What is the smallest useful spacetime geometry that could theoretically permit the transmission of information?
Communication Changes the Design Target
Most familiar discussions of traversable wormholes imagine transporting something substantial through them.
A spacecraft.
A person.
Perhaps matter of some other kind.
Project Communication begins with a much smaller requirement.
The first useful system would not need to transport a spacecraft.
It would not need to transport a person.
The initial target is simply:
Transmit at least one recoverable piece of information between two endpoints through a path physically distinct from conventional propagation through ordinary space.
That distinction matters.
A throat large enough for a spacecraft and a geometry sufficient to transmit an information-bearing physical excitation represent very different research targets.
So instead of asking how large a wormhole can be made, WC-MGT-1 begins by asking how little geometry might actually be required.
Starting With an Existing Theoretical Framework
WC-MGT-1 does not begin by inventing a new theory of gravity.
It starts with general relativity and uses the Morris-Thorne class of traversable-wormhole geometries as a theoretical test case.
A commonly used form of the static, spherically symmetric metric is:
For this first model, the redshift function is simplified to
and a simple shape function is selected:
where \(r_0\) represents the throat radius.
There is an important research-integrity distinction here.
We are not claiming that this geometry describes a device that can be constructed.
It is a theoretical test geometry.
Its usefulness is that it gives us something explicit enough to analyze.
Working Backward Through Einstein's Equations
Einstein's field equations connect spacetime geometry with matter and energy:
Usually we think about this relationship in one direction:
Given matter and energy, how is spacetime curved?
WC-MGT-1 asks the inverse engineering question:
If we specify a geometry with properties we want, what stress-energy would that geometry require?
For the selected shape function,
Under the standard Morris-Thorne orthonormal-frame convention, the corresponding energy density can be written as
where \(\rho\) here denotes energy density.
At the throat, \(r=r_0\),
The negative sign is important.
For this particular geometry, the magnitude therefore scales as
This gives us an important lesson from WC-MGT-1:
Smaller does not automatically mean physically easier.
The Microscopic-Wormhole Trap
It is tempting to reason that if a human-sized wormhole is extraordinarily difficult, we should simply make the wormhole microscopic.
WC-MGT-1 demonstrates why throat size cannot be treated as the only optimization variable.
As \(r_0\) decreases in this selected geometry, the magnitude of the required local energy density increases as \(1/r_0^2\).
A microscopic geometry can therefore exchange one problem for another.
Instead of requiring an enormous region with unusual properties, it may require increasingly extreme local conditions concentrated into a much smaller region.
This does not establish that every possible microscopic wormhole geometry behaves this way.
It tells us what happens for this selected test geometry.
That distinction is important.
The Null-Energy-Condition Problem
WC-MGT-1 also encounters one of the central difficulties of classical traversable-wormhole physics.
The geometry requires violation of the null energy condition near the throat. This is characteristic of the classical Morris-Thorne framework.
Quantum field theory complicates the picture because classical pointwise energy conditions are not universally obeyed by quantum fields. But negative-energy configurations are not unrestricted. Quantum energy inequalities constrain the magnitude and duration of negative averaged energy densities and have been used specifically to place restrictions on traversable-wormhole geometries.
The Casimir effect provides experimentally established evidence of quantum vacuum phenomena, but it should not be interpreted as evidence that the stress-energy required by WC-MGT-1 can be manufactured, sustained, or arranged into a traversable wormhole.
That remains an enormous unresolved physical obstacle.
More Than One Variable Matters
WC-MGT-1 is therefore pushing the project away from a single-variable question.
We should not merely ask:
How small can the throat be?
The emerging research space includes quantities such as
Here:
- \(r_0\) represents throat radius,
- \(L_W\) represents a proposed proper internal path relevant to transmission,
- \(\delta\) represents a proposed measure of the spatial extent of the unusual stress-energy region,
- \(\tau\) represents a proposed duration for which traversability would be required,
- and carrier represents the physical excitation used to encode information.
There is an important distinction between these variables.
They have not all been derived as independent optimization parameters of WC-MGT-1.
Some describe the chosen geometry. Others are Beyond the Light Barrier research variables that future iterations will investigate.
The developing question is therefore broader than simply minimizing \(r_0\):
Can a complete communication configuration be identified whose physical requirements are less severe?
Does It Need to Remain Open?
This raises another hypothesis for future investigation.
If a hypothetical communication geometry only needed to transmit a small amount of information, perhaps continuous traversability would not be necessary.
A future model could investigate a requirement conceptually resembling
This is not a result of WC-MGT-1.
It is a Beyond the Light Barrier hypothesis motivated by the communication-oriented design problem.
There is currently no experimental evidence that a manufactured transient traversable wormhole can be created.
The purpose of introducing \(\tau\) is to determine mathematically whether reducing required active duration changes any of the relevant physical constraints.
What Should Carry the Information?
We should also avoid choosing the information carrier prematurely.
Electromagnetic radiation is the obvious choice for ordinary communication, but a hypothetical wormhole geometry would require analysis of how particular fields or excitations propagate through that spacetime.
The appropriate research question is therefore:
Which physically permissible information carrier, if any, produces the least demanding combination of geometry and reliable information transfer?
Photons may prove appropriate.
Another field excitation may provide a useful theoretical comparison.
Or the analysis may show that changing the carrier does nothing to resolve the fundamental stress-energy problem.
That comparison is one of the next research tasks.
What WC-MGT-1 Does Not Show
WC-MGT-1 does not demonstrate that:
- physical traversable wormholes exist;
- a wormhole can be manufactured;
- the required negative stress-energy can be engineered;
- two usable endpoints can be created and separated;
- endpoint identity can be preserved;
- information can actually be transmitted through a manufactured wormhole;
- such information would arrive faster than a conventional light signal through ordinary space;
- the Casimir effect supplies the physical resources necessary to construct such a geometry.
Those remain unresolved questions.
WC-MGT-1 is a mathematical test model, not an experiment.
What We Have Learned
The result is intentionally modest.
But the research question has become considerably more precise.
We began with:
Can wormholes be used for communication?
We are now asking:
What combination of geometry, spatial extent, active duration, internal path, and information carrier minimizes the physical requirements for transferring one recoverable piece of information?
That is a better research question.
It provides variables we can analyze.
It gives us assumptions we can challenge.
It exposes physical constraints.
And, importantly, it gives future models opportunities to fail.
The Next Step
The next WC work will investigate carrier-geometry matching.
Rather than choosing a communication carrier because it is familiar, we will compare candidate information-bearing excitations against the requirements imposed by the geometry.
The objective will be to determine whether carrier choice materially changes the Minimum Geometry Throat problem—or whether the underlying geometric and stress-energy requirements dominate regardless of carrier.
Either result would move the research forward.
WC-MGT-1 does not give us a communication device.
It gives us something more appropriate for this stage of the project:
a smaller and more precise problem to try to break.
Sources & Further Reading
Morris, Michael S., and Kip S. Thorne. “Wormholes in spacetime and their use for interstellar travel: A tool for teaching general relativity.” American Journal of Physics 56, 395–412 (1988).
Introduces the traversable-wormhole framework used in this entry, including the relationship between throat geometry and the matter and energy required to support it.
Read the paper
Ford, L. H., and Thomas A. Roman. “Quantum field theory constrains traversable wormhole geometries.” Physical Review D 53, 5496–5507 (1996).
Applies quantum restrictions on the magnitude and duration of negative energy density to static traversable-wormhole geometries. This analysis provides context for why throat size and the spatial distribution of unusual stress-energy must be considered together.
Read the paper · Free preprint
Fewster, Christopher J. “Lectures on quantum energy inequalities.” Lecture notes, arXiv:1208.5399 (2012).
Explains how quantum fields can violate classical energy conditions while remaining subject to restrictions on averaged energy densities. Provides further background for the entry’s discussion of negative-energy constraints.
Read the lecture notes
Lamoreaux, S. K. “Demonstration of the Casimir Force in the 0.6 to 6 μm Range.” Physical Review Letters 78, 5–8 (1997).
Reports an experimental measurement of the Casimir force. It supports the discussion of measurable quantum vacuum effects; it does not demonstrate that the stress-energy needed for a traversable wormhole can be manufactured or sustained.
Read the paper
Relationship to the Beyond the Light Barrier research project
These references provide the theoretical framework and experimental background discussed in this entry. WC-MGT-1 is the project’s designation for its selected mathematical test model. The communication-focused research questions—including carrier selection, proposed active duration, and comparison of complete communication configurations—remain subjects for further investigation.
The energy-density scaling illustrated in Figure 7 follows from the specific geometry and equations presented in this entry. It should not be interpreted as a universal result for every wormhole geometry or as evidence that a working communication device has been demonstrated.
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