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quantum cosmology wikipedia jump to content main menu main menu move to sidebar hide navigation main page contents current events random article about wikipedia contact us contribute help learn to edit community portal recent changes upload file special pages search search appearance donate create account log in personal tools donate create account log in contents move to sidebar hide top 1 see also toggle see also subsection 1 1 references 2 further reading 3 external links toggle the table of contents quantum cosmology 18 languages العربية català deutsch español eesti euskara فارسی suomi français italiano 日本語 한국어 bahasa melayu ਪੰਜਾਬੀ português русский українська 中文 edit links article talk english read edit view history tools tools move to sidebar hide actions read edit view history general what links here related changes upload file permanent link page information cite this page get shortened url switch to legacy parser print export download as pdf printable version in other projects wikidata item appearance move to sidebar hide from wikipedia the free encyclopedia attempts to develop a quantum mechanical theory of cosmology 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 path integral formulation propagator quantization regularization renormalization vacuum state wick s theorem wightman axioms equations dirac equation klein gordon equation proca equations wheeler dewitt equation bargmann wigner equations schwinger dyson equation renormalization group equation standard model quantum electrodynamics electroweak interaction quantum chromodynamics higgs mechanism incomplete theories string theory supersymmetry technicolor theory of everything quantum gravity v t e 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 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 edit 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 world crystal quantum vacuum state false vacuum why is there anything at all something may exist necessarily references edit bojowald martin 2015 quantum cosmology a review reports on progress in physics 78 2 023901 arxiv 1501 04899 bibcode 2015rpph 78b3901b doi 10 1088 0034 4885 78 2 023901 pmid 25582917 s2cid 18463042 chiou dah wei 2015 loop quantum gravity international journal of modern physics d 24 1 1530005 1530331 arxiv 1412 4362 bibcode 2015ijmpd 2430005c doi 10 1142 s0218271815300050 s2cid 16655619 stephen hawking wrote 1999 so what the singularity theorems are really telling us is that the universe had a quantum origin and that we need a theory of quantum cosmology if we are to predict the present state of the universe quantum cosmology m theory and the anthropic principle stephen hawking archived from the original on 2015 02 14 retrieved 2015 02 14 klebanov igor maldacena juan 2009 solving quantum field theories via curved spacetimes physics today 62 1 28 bibcode 2009pht 62a 28k doi 10 1063 1 3074260 he dongshan gao dongfeng cai qing yu 2014 spontaneous creation of the universe from nothing physical review d 89 8 083510 arxiv 1404 1207 bibcode 2014phrvd 89h3510h doi 10 1103 physrevd 89 083510 s2cid 118371273 further reading edit bojowald martin 2011 quantum cosmology a fundamental description of the universe lecture notes in physics vol 835 springer isbn 978 1 4419 8276 6 halliwell jonathan j july 1989 the dichotomy of cosmogeny nature 340 6228 17 18 bibcode 1989natur 340 17h doi 10 1038 340017a0 issn 0028 0836 the introduction describes quantum cosmology external links edit quantum cosmology by paulo vargas moniz lectures on quantum cosmology by j j halliwell v t e quantum gravity central concepts ads cft correspondence batalin vilkovisky formalism ca duality causal patch faddeev popov ghost gravitational anomaly graviton holographic principle ir uv mixing planck units quantum foam ryu takayanagi conjecture trans planckian problem weinberg witten theorem toy models 2 1d topological gravity cghs model jackiw teitelboim gravity liouville gravity rst model topological quantum field theory quantum field theory in curved spacetime bunch davies vacuum hawking radiation semiclassical gravity unruh effect black holes black hole complementarity black hole information paradox black hole thermodynamics bekenstein bound bousso s holographic bound cosmic censorship hypothesis er epr firewall physics gravitational singularity approaches string theory bosonic string theory m theory matrix theory physics supergravity superstring theory canonical quantum gravity loop quantum gravity wheeler dewitt equation euclidean quantum gravity hartle hawking proposal others causal dynamical triangulation causal sets dual graviton group field theory noncommutative geometry spin foam superfluid vacuum theory twistor theory applications quantum cosmology eternal inflation frw cft duality multiverse see also template quantum mechanics topics v t e quantum mechanics background introduction history timeline classical mechanics old quantum theory glossary fundamentals born rule bra ket notation complementarity density matrix energy level ground state excited state degenerate levels zero point energy entanglement hamiltonian interference decoherence measurement nonlocality quantum state quantum jump superposition tunnelling scattering theory symmetry in quantum mechanics uncertainty wave function collapse wave particle duality universal wave function formulations formulations heisenberg interaction matrix mechanics schrödinger path integral formulation phase space equations klein gordon dirac weyl majorana rarita schwinger pauli rydberg schrödinger interpretations bayesian consciousness causes collapse consistent histories copenhagen de broglie bohm ensemble hidden variable local superdeterminism many worlds objective collapse quantum logic relational transactional experiments bell test davisson germer delayed choice quantum eraser double slit franck hertz mach zehnder interferometer elitzur vaidman popper quantum eraser stern gerlach wheeler s delayed choice science quantum biology quantum chemistry quantum chaos quantum cosmology quantum differential calculus quantum dynamics quantum geometry quantum measurement problem quantum mind quantum stochastic calculus quantum spacetime technology quantum algorithms quantum amplifier quantum bus quantum cellular automata quantum finite automata quantum channel quantum circuit quantum complexity theory quantum computing timeline quantum cryptography quantum electronics quantum error correction quantum imaging quantum image processing quantum information quantum key distribution quantum logic quantum logic gates quantum machine quantum machine learning quantum metamaterial quantum metrology quantum network quantum neural network quantum optics quantum programming quantum sensing quantum simulator quantum teleportation extensions quantum fluctuation casimir effect quantum statistical mechanics quantum field theory history quantum gravity relativistic quantum mechanics related schrödinger s cat in popular culture wigner s friend epr paradox quantum mysticism category v t e astronomy outline history timeline astronomer astronomical symbols astronomical object glossary in space astronomy by manner amateur observational sidewalk space telescope celestial subject galactic extragalactic local system solar em methods radio submillimetre infrared far infrared visible light optical ultraviolet x ray history gamma ray other methods neutrino cosmic rays gravitational radiation high energy radar spherical multi messenger culture australian aboriginal babylonian chinese egyptian greek hebrew indian inuit maya medieval islamic persian serbian folk tibetan optical telescopes list category extremely large telescope astrograph extremely large telescope gran telescopio canarias hale telescope hubble space telescope keck observatory large binocular telescope southern african large telescope very large telescope related archaeoastronomy astrobiology astrochemistry astroinformatics astrology and astronomy astrometry astronomers monument astroparticle physics astrophysics astrotourism binoculars constellation iau cosmogony photometry planetarium planetary geology physical cosmology quantum cosmology list of astronomers french medieval islamic russian women telescope radio telescope infrared telescope x ray telescope history zodiac list of astronomical catalogues category astronomy portal commons wikiproject retrieved from https en wikipedia org w index php title quantum_cosmology oldid 1375574901 categories quantum gravity physical cosmology hidden categories articles with short description short description matches wikidata this page was last edited on 18 september 2026 at 16 57 utc page was rendered with parsoid text is available under the creative commons attribution sharealike 4 0 license additional terms may apply by using this site you agree to the terms of use and privacy policy wikipedia is a registered trademark of the wikimedia foundation inc a non profit organization privacy policy about wikipedia disclaimers contact wikipedia legal safety contacts code of conduct developers statistics cookie statement mobile view search search toggle the table of contents quantum cosmology 18 languages add topic