Exponentially Small Cosmological Constant in String Theory
Mehmet Demirtas, Manki Kim, Liam McAllister, Jakob Moritz, Andres Rios-Tascon
Abstract
We construct a supersymmetric vacuum of string theory in which the magnitude of the vacuum energy is <10^{-123} in Planck units. The mechanism that we introduce generates a well-controlled exponential hierarchy from an appropriate choice of the quantized parameters in the superpotential. Our approach provides a new angle on the cosmological constant problem.
Topics & Concepts
PhysicsCosmological constantVacuum energyString theoryTheoretical physicsString (physics)Constant (computer programming)String field theoryPlanckExtra dimensionsVacuum stateFalse vacuumNon-critical string theoryString phenomenologyExponential growthCompactification (mathematics)Hierarchy problemPlanck massCosmic stringPlanck lengthMathematical physicsExponential functionExponential decayHierarchyKaluza–Klein theoryPlanck constantQuantum mechanicsRelationship between string theory and quantum field theoryString cosmologyMechanism (biology)M-theoryClassical mechanicsCosmological modelCosmological constant problemFriedmann–Lemaître–Robertson–Walker metricLambda-CDM modelZero (linguistics)Scheme (mathematics)SupersymmetryUniverseCosmology and Gravitation TheoriesBlack Holes and Theoretical PhysicsNoncommutative and Quantum Gravity Theories