Quantum theory can explain what happens to the human soul after we die. According to scientists, at the onset of clinical death, the substances that comprise it leave our nervous system and become part of the vast Universe. With biological death, they transform into the so-called "spirit form".
The theory is called orchestrated objective reduction (Orch-OR). It postulates that consciousness is the result of the effect of quantum gravity on the universe.
It is a program of the brain's quantum computer which can continue to function even after death. This is the theory that explains the things people say they have seen and experienced during clinical death.
The theory was 1st proposed by Roger Penrose and currently it has been built upon and expanded by Dr. Stuart Hameroff, respected anesthesiologist and psychology professor at the University of Arizona.
At its heart lies the conviction that our soul is contained in structures called microtubules, in turn found in the cells of our brain. Simply stated, according to the theory, our soul interacts with the neurons in our brain and is composed of the fabric of the universe itself.
Further, the theory proposes that the soul has existed before the beginning of time itself. This idea is stressed in certain religions, including Buddhism and Hinduism. According to these, consciousness is an integral part of the universe.
When the body experiences clinical death, the microtubules lose their quantum state. But the information contained within them is left untouched. It simply leaves the body and spreads out into space, where it originally came from anyway.
When the patient is reanimated, the information returns back to the microtubules. That's when we can say that they have survived clinical death. The theory concludes that if they die, the information remains outside the body and thus in the infinite in the form of, most likely, a soul.
To discern between clinical and biological death, scientists point out that the difference between them is just several minutes' time. A person experiences clinical death when their heart stops beating and blood circulation and breathing stop.
Before a fatal end, the body can be reanimated. Biological death is registered after 4-5 min., with the onset of brain death, when all neurological functions irreversibly cease.