cosmological constant problem

GPTKB entity

Predicate	Object
gptkbp:instanceOf	physics problem
gptkbp:alsoKnownAs	gptkb:vacuum_catastrophe
gptkbp:describes	discrepancy between observed and theoretical values of vacuum energy density
gptkbp:field	gptkb:cosmology gptkb:theoretical_physics
gptkbp:firstDiscussed	20th century
https://www.w3.org/2000/01/rdf-schema#label	cosmological constant problem
gptkbp:numberOfIssues	vacuum energy predicted by quantum field theory is much larger than observed value
gptkbp:openProblem	yes
gptkbp:orderOfMagnitudeDiscrepancy	about 120 orders of magnitude
gptkbp:proposedSolutions	gptkb:string_theory_landscape gptkb:string_theory anthropic principle modifications of gravity quintessence
gptkbp:relatedTo	gptkb:cosmological_constant gptkb:general_relativity gptkb:quantum_field_theory dark energy accelerating expansion of the universe
gptkbp:significance	one of the biggest unsolved problems in physics
gptkbp:bfsParent	gptkb:string_theory gptkb:The_Cosmological_Constant_Problem,_Dark_Energy,_and_the_Landscape_of_String_Theory gptkb:de_Sitter_space
gptkbp:bfsLayer	5