Quantum cosmology[1][2] is the attempt in theoretical physics to develop a quantum theory of the universe. This approach attempts to answer open questions of classical physical cosmology, particularly those related to the first phases of the universe.

Quantum field theory
Feynman diagram
History
Background Field theory Electromagnetism Weak force Strong force Quantum mechanics Special relativity General relativity Gauge theory Yang–Mills theory
Symmetries Symmetry in quantum mechanics C-symmetry P-symmetry T-symmetry Lorentz symmetry Poincaré symmetry Gauge symmetry Explicit symmetry breaking Spontaneous symmetry breaking Noether charge Topological charge
Tools Anomaly Background field method BRST quantization Correlation function Crossing Effective action Effective field theory Expectation value Feynman diagram Lattice field theory LSZ reduction formula Partition function Propagator Quantization Regularization Renormalization Vacuum state Wick's theorem
Equations Dirac equation Klein–Gordon equation Proca equations Wheeler–DeWitt equation Bargmann–Wigner equations
Standard Model Quantum electrodynamics Electroweak interaction Quantum chromodynamics Higgs mechanism
Incomplete theories String theory Supersymmetry Technicolor Theory of everything Quantum gravity
Scientists Anderson Anselm Bargmann Becchi Belavin Berezin Bethe Bjorken Bleuer Bogoliubov Brodsky Brout Buchholz Callan Coleman Dashen DeWitt Dirac Dyson Englert Faddeev Fadin Fermi Feynman Fierz Fock Fröhlich Furry Glashow Gelfand Gell-Mann Goldstone Gribov Gross Gupta Guralnik Haag Heisenberg Hepp Higgs Hagen 't Hooft Ivanenko Jackiw Jona-Lasinio Jordan Jost Källén Kendall Klebanov Kontsevich Kuraev Landau Lee Lehmann Lipatov Low Lüders Maiani Majorana Maldacena Migdal Mills Møller Naimark Nambu Neveu Nishijima Oehme Oppenheimer Osterwalder Parisi Pauli Polyakov Pomeranchuk Popov Proca Rubakov Ruelle Salam Schwarz Schwinger Segal Seiberg Semenoff Shirkov Skyrme Stora Stueckelberg Sudarshan Symanzik Thirring Tomonaga Tyutin Veltman Virasoro Ward Weinberg Weisskopf Wentzel Wess Wetterich Weyl Wick Wightman Wigner Wilczek Wilson Witten Yang Yukawa Zamolodchikov Zamolodchikov Zimmermann Zinn-Justin Zuber Zumino
v t e

Classical cosmology is based on Albert Einstein's general theory of relativity (GTR or simply GR) which describes the evolution of the universe very well, as long as you do not approach the Big Bang. It is the gravitational singularity and the Planck time where relativity theory fails to provide what must be demanded of a final theory of space and time. Therefore, a theory is needed that integrates relativity theory and quantum theory.[3] Such an approach is attempted for instance with loop quantum cosmology, loop quantum gravity, string theory and causal set theory.[4]

In quantum cosmology, the universe is treated as a wave function instead of classical spacetime.[5]

See also

• String cosmology
• Brane cosmology
• Loop quantum cosmology
• Top-down cosmology
• Non-standard cosmology
• Loop quantum gravity
• Canonical quantum gravity
• Dark energy
• Minisuperspace
• Hamilton–Jacobi–Einstein equation
• Theory of everything

References

• Bojowald, Martin (2011). Quantum Cosmology. A Fundamental Description of the Universe. Lecture Notes in Physics. Vol. 835. Springer. ISBN 978-1-4419-8276-6.

Notes

External links

• A Layman's Explanation of Quantum Cosmology
• Lectures on Quantum Cosmology by J.J. Halliwell

На других языках

[de] Quantenkosmologie