Chapter Six:singularity explanation

"David, can you still hear us", said allysa and Marcus.

But David only saw them, originally David could see and hear their voices clearly, but David had become a superior entity to them, this place is a singularity, Singularity occurs when a physical quantity, such as mass density or gravity, becomes infinite, and the laws of physics that are commonly used can no longer describe the condition accurately. One example of a singularity is the one inside a black hole, right at the center, where gravity is so strong that not even light can escape, and the laws of classical physics and the general theory of relativity no longer apply normally.

Yes, so I will explain again about singularity, Singularity is a point in space-time where the curvature of space-time becomes infinite. This leads to the inability to describe the physical conditions at that point with the existing laws of physics, as described in the general theory of relativity by Albert Einstein. At a singularity, the force of gravity becomes so strong that all matter objects are concentrated in a very small volume, and the density and temperature become infinite. At this point, the inertial frame of reference breaks down and time and space can no longer be separated in the way we normally understand them. Spacetime, which is a concept in general relativity that combines the dimensions of space and time into one, will experience extreme distortion at the singularity. According to the general theory of relativity, spacetime is bent by mass and energy. At the singularity, this distortion becomes infinite, resulting in the collapse of the geometry of spacetime, which makes the laws of classical physics, such as Newton's laws of motion and even Einstein's law of gravity, no longer apply. In this context, concepts such as time stopping or time paradoxes arise, because the measurement of time at this point becomes very abstract and no longer defined.

Talking about the ability to see the future, the past, and times that have never happened, this is often related to the theory of the multiverse and the concept of time in quantum mechanics. One relevant concept is quantum interactions in non-local spacetime. In this theory, time is not linear and can be understood as an emergent property that depends on the fundamental structure of spacetime. In the context of quantum mechanics, quantum superposition and entanglement allow for states where a system can be in multiple states at once, and with the Many-Worlds interpretation of quantum theory, there may be parallel worlds representing every possible outcome of an event.

From the perspective of relativistic geometry, there are theories of closed timelike curves (CTCs) that allow for time travel. In certain solutions of Einstein's equations, such as the Kerr metric for rotating black holes, it is possible for particles or information to travel into the past or future in a distorted spacetime. While this is a speculative object in theoretical physics, CTCs introduce the idea that time travel in some form could be conceptual, albeit with very strict restrictions regarding causal consistency and time paradoxes.

In the context of cosmology and general relativity, these singularities are associated with the big bang as the starting point of spacetime and in black holes, which are mathematical solutions to the contraction of spacetime. The laws of physics that we are familiar with, such as the laws of thermodynamics and Newton's law of gravity, begin to fail to explain the extreme conditions at these singularity points, requiring a quantum theory of gravity for a more complete understanding.

In general relativity pioneered by Einstein, a gravitational singularity is a singularity in the space-time metric caused by an infinite energy density. These points, often found at the center of black holes, are produced by the extreme contraction of matter into a volume that approaches zero, creating an infinite curvature of space-time. The mathematics that describes this phenomenon, primarily through Einstein's field equations, involves the energy-momentum tensor, which shows that at a singularity, the Riemann tensor becomes undefined, indicating the breakdown of all the fabric of space-time as we understand it. This state creates a geometric irregularity, where the laws of classical physics, such as Newton's laws of gravity and the laws of thermodynamics, cannot be applied due to infinite divergence.

The phenomenon of singularities also suggests the need for a quantum theory of gravity, a theory that attempts to combine quantum mechanics with general relativity. One of the leading candidates for a quantum theory of gravity is string theory, which suggests that space-time at the Planck scale (10^-35 meters) it is no longer continuous, but consists of a one-dimensional string-based world interacting at the quantum level. At this scale, quantum fluctuations in spacetime become very large, leading to unpredictable spacetime, and losing the order we know. In this framework, causal computations become invalid, leading to non-local temporal relations involving non-inertial reference frames that experience extreme position and momentum uncertainties.

So what is many worlds?

Many-Worlds (MWI) theory is an interpretation of quantum mechanics that proposes that whenever a quantum measurement is made, the reality of a superposition of unobserved quantum states splits into multiple branches, each representing a different outcome of the measurement. In this context, the universe we observe is just one of an infinite multiverse, each a separate reality whose outcome correlates with the possible outcomes of an observation.

More profoundly, this splitting process occurs without any external interaction or causality governing from outside the quantum system itself. Quantum uncertainty at the microscopic level does not mean that any given state is the sole destiny of a single universe; rather, each possible state of a quantum particle or system is manifested in a series of parallel universes, each involving a different quantum history that multiplies the possibilities. At a more abstract level, the MWI assumes that spacetime as we know it is simply a branch in the topological graph of the multiverse, which maps the superpositional states of the system onto the larger missing structure of the quantum continuum of reality.

In other words, each measurement is not the revelation of a single state of reality, but rather the coherent convergence of many separate realities, where the quantum wave function does not collapse in the traditional sense, but instead facilitates the evolutionary splitting of possible worlds into separate existences, each of which continues independently of the others.

Those on Earth (Alyssa and Marcus) could hear what David was saying, because they were on the phone with him.