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- Kodama_state abstract "In 1988, Hideo Kodama wrote down the equations of the Kodama state, but as it described a positive (de Sitter universe) spacetime, which was believed to be inconsistent with observation, it was largely ignored.In 2002, Lee Smolin suggested that the Kodama state is a ground state which has a good semiclassical limit which reproduces the dynamics of general relativity with a positive (de Sitter) cosmological constant, 4 dimensions, and gravitons. It is an exact solution to ordinary constraints on background independent quantum gravity, providing evidence that loop quantum gravity is indeed a quantum gravity with the correct semiclassical description. In 2003, Edward Witten published a paper in response to Lee Smolin's, arguing that the Kodama state is unphysical, due to an analogy to a state in Chern–Simons theory wave functions, resulting in negative energies. In 2006, Andrew Randono published two papers which address these objections, by generalizing the Kodama state. Randono concluded that the Immirzi parameter, when generalized with a real value, fixed by matching with black hole entropy, describes parity violation in quantum gravity, and is CPT invariant, and is normalizable, and chiral, consistent with known observations of both gravity and quantum field theory. Randono claims that Witten's conclusions rest on the Immirzi parameter taking on an imaginary number, which simplifies the equation. The physical inner product may resemble the MacDowell–Mansouri action formulation of gravity.".
- Kodama_state wikiPageID "22245489".
- Kodama_state wikiPageLength "2980".
- Kodama_state wikiPageOutDegree "22".
- Kodama_state wikiPageRevisionID "599498865".
- Kodama_state wikiPageWikiLink Background_independence.
- Kodama_state wikiPageWikiLink Black_hole_entropy.
- Kodama_state wikiPageWikiLink Black_hole_thermodynamics.
- Kodama_state wikiPageWikiLink CPT_symmetry.
- Kodama_state wikiPageWikiLink Category:Loop_quantum_gravity.
- Kodama_state wikiPageWikiLink Chern–Simons_theory.
- Kodama_state wikiPageWikiLink Chirality_(physics).
- Kodama_state wikiPageWikiLink Cosmological_constant.
- Kodama_state wikiPageWikiLink De_Sitter_universe.
- Kodama_state wikiPageWikiLink Edward_Witten.
- Kodama_state wikiPageWikiLink General_relativity.
- Kodama_state wikiPageWikiLink Graviton.
- Kodama_state wikiPageWikiLink Gravitons.
- Kodama_state wikiPageWikiLink Ground_state.
- Kodama_state wikiPageWikiLink Hideo_Kodama_(physicist).
- Kodama_state wikiPageWikiLink Imaginary_number.
- Kodama_state wikiPageWikiLink Immirzi_parameter.
- Kodama_state wikiPageWikiLink Inner_product.
- Kodama_state wikiPageWikiLink Inner_product_space.
- Kodama_state wikiPageWikiLink Lee_Smolin.
- Kodama_state wikiPageWikiLink Loop_quantum_gravity.
- Kodama_state wikiPageWikiLink MacDowell–Mansouri_action.
- Kodama_state wikiPageWikiLink Parity_(physics).
- Kodama_state wikiPageWikiLink Parity_violation.
- Kodama_state wikiPageWikiLink Wave_function.
- Kodama_state wikiPageWikiLinkText "Kodama state".
- Kodama_state hasPhotoCollection Kodama_state.
- Kodama_state wikiPageUsesTemplate Template:Citation_needed.
- Kodama_state wikiPageUsesTemplate Template:Context.
- Kodama_state wikiPageUsesTemplate Template:Physics-stub.
- Kodama_state wikiPageUsesTemplate Template:Reflist.
- Kodama_state subject Category:Loop_quantum_gravity.
- Kodama_state hypernym State.
- Kodama_state type Article.
- Kodama_state type PopulatedPlace.
- Kodama_state type Article.
- Kodama_state type Page.
- Kodama_state type Physic.
- Kodama_state comment "In 1988, Hideo Kodama wrote down the equations of the Kodama state, but as it described a positive (de Sitter universe) spacetime, which was believed to be inconsistent with observation, it was largely ignored.In 2002, Lee Smolin suggested that the Kodama state is a ground state which has a good semiclassical limit which reproduces the dynamics of general relativity with a positive (de Sitter) cosmological constant, 4 dimensions, and gravitons.".
- Kodama_state label "Kodama state".
- Kodama_state sameAs m.05q4msv.
- Kodama_state sameAs สถานะโคะดะมะ.
- Kodama_state sameAs Kodama_durumu.
- Kodama_state sameAs Q6425192.
- Kodama_state sameAs Q6425192.
- Kodama_state wasDerivedFrom Kodama_state?oldid=599498865.
- Kodama_state isPrimaryTopicOf Kodama_state.