Universal wavefunction
Template:Short description The universal wavefunction or the wavefunction of the universe is the wavefunction or quantum state of the entire universe.[1] It is regarded as the basic physical entity[2] in the many-worlds interpretation of quantum mechanics,[3][4][5][6] and finds applications in quantum cosmology. It evolves deterministically according to a wave equation.[7]
The concept of universal wavefunction was introduced by Hugh Everett in his 1956 PhD thesis draft The Theory of the Universal Wave Function.[8] It later received investigation from James Hartle and Stephen Hawking[9] who derived the Hartle–Hawking solution to the Wheeler–DeWitt equation to explain the initial conditions of the Big Bang cosmology.
Role of observers
Hugh Everett's universal wavefunction supports the idea that observed and observer are all mixed together: Template:Quote
Eugene Wigner and John Archibald Wheeler take issue with this stance. Wigner wrote: Template:Quote
Wheeler wrote: Template:Quote
See also
References
- ↑ Everett [1956]1973, "Theory of the Universal Wavefunction", introduction, pg 8–9
- ↑ Everett 1957, section 3, 2nd paragraph, 1st sentence.
- ↑ Hugh Everett, Relative State Formulation of Quantum Mechanics, Reviews of Modern Physics vol 29, (1957) pp 454–462. An abridged summary of The Theory of the Universal Wavefunction
- ↑ John Archibald Wheeler, Assessment of Everett's "Relative State Formulation of Quantum Theory", Reviews of Modern Physics, vol 29, (1957) pp 463–465
- ↑ Bryce Seligman DeWitt, Quantum Mechanics and Reality, Physics Today,23(9) pp 30–40 (1970) also April 1971 letters followup
- ↑ Bryce Seligman DeWitt, The Many-Universes Interpretation of Quantum Mechanics, Proceedings of the International School of Physics "Enrico Fermi" Coursu IL: Foundations of Quantum Mechanics, Academic Press (1972)
- ↑ Everett [1956]1973, "Theory of the Universal Wavefunction", chapter 6 (e)
- ↑ Bryce Seligman DeWitt, R. Neill Graham, eds, The Many-Worlds Interpretation of Quantum Mechanics, Princeton Series in Physics, Princeton University Press (1973), Template:ISBN Contains the reprint of Everett's thesis: The Theory of the Universal Wave Function, pp 3–140.
- ↑ Stephen W Hawking, James B Hartle "The Wave Function of the Universe," Physical Review D, vol 28, (1983) pp 2960–2975