Quantum immortality is a thought experiment rooted in the concept of the multiverse and quantum mechanics. It explores the idea that an individual's consciousness can continue to exist in a universe where they never experience death, even if they encounter life-threatening situations.
The concept is based on the principle of quantum superposition and the idea that every possible outcome of an event exists in a separate universe or branch of reality. According to quantum mechanics, when a quantum event occurs, such as the measurement of a particle, the universe splits into multiple branches, each representing a different outcome.
In the context of quantum immortality, the idea is that if an individual is involved in a life-threatening situation, such as a quantum suicide experiment, their consciousness will continue to exist in the universe where they survive, regardless of the probabilities involved. From the perspective of the individual, they would perceive themselves as "immortal" because they only experience the outcomes where they survive.
It's important to note that quantum immortality is a thought experiment and does not have empirical evidence supporting its existence. It is a concept that sparks philosophical and speculative discussions about the nature of consciousness, reality, and the implications of quantum mechanics. Many physicists and philosophers consider it more of a fascinating idea to explore rather than a scientifically established phenomenon.