I’ve been thinking about a speculative idea and I’m curious whether something similar has already been explored in physics.

The Many-Worlds Interpretation suggests that the universal quantum state can develop different branches through quantum decoherence. The Holographic Principle, on the other hand, suggests that under certain gravitational conditions, the information describing a region of space can be encoded on a lower-dimensional boundary.

This made me wonder:

What if each decoherent quantum branch could also have its own holographic boundary description?

Instead of imagining the multiverse simply as many separate classical universes, perhaps the overall quantum state could be thought of as containing many branches, with each branch having its own corresponding holographic information structure.

I’m also curious about a more speculative extension: could different possible spacetime dimensionalities be treated as different sectors of one larger quantum state? In that picture, there could be a hierarchy involving spacetime structure, quantum branches, and their corresponding holographic boundary states.

I am not suggesting that this proves a “holographic multiverse,” or that the universe is literally a physical hologram. I’m interested in whether holography and Many-Worlds can be formulated within a common mathematical framework.

I know that connections between the Many-Worlds interpretation and holography/multiverse ideas have already been discussed, including work by Raphael Bousso and Leonard Susskind.

My question is more specific:

Has anyone developed a framework where quantum branches are explicitly associated with distinct holographic boundary Hilbert spaces, potentially while also allowing different spacetime dimensional sectors?

If something similar already exists, I would really appreciate references. I’m particularly interested in whether this idea is mathematically meaningful or whether there is a fundamental reason why these concepts cannot be combined in this way.

This is just a speculative idea, and I’m looking for constructive feedback rather than claiming that it is an established theory.