**Decoherence, Branching, and the Born Rule in a Mixed-State Everettian Multiverse**

by Multiverse Theory: as real as the movies make it out to beFebruary 22nd, 2024

This paper is available on arxiv under CC 4.0 license.

**Authors:**

(1) Igor Yu. Potemine, Institut de Math´ematiques, Universit´e Paul Sabatier.

- Abstract and Introduction
- 5-dimensional Einstein Equations
- Nested Gogberashvili Models
- Harmony of Transcosmic Spheres
- Sequence of Event Horizons
- Time-amalgamated Multiverses
- Dark Energy and Multiversal Nurseries
- Black Holes as Multiverses
- Multi-solitonic and Gyratonic Gravitational Waves
- Elliptic and Spiral Galaxies
- Cosmological Coupling
- Conclusion and References

It turns out that nested Gogberashvili shells represent good models for multiverses inside the Hyperverse.

In this paper we have restrained the Hyperverse to its local (4 + 1)- dimensional stratum. However, similar solutions exist in all dimensions d + 1 with d > 2. In fact, we can construct an infinite tower of embedded Gogberashvili multiverses of various dimensions.

An alternative approach is given by Robinson-Trautman metrics describing expanding spacetimes and spherical gravitational waves. It provides us with an intriguing idea to consider supermassive astronomical black holes as expanding (2 + 1)-dimensional multiverses (with possible higher strata too).

It might give new angles of view on the black hole growth, the cosmological coupling, relativistic jets and even on the classification of galaxies.

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