Effective description of generalized disformal theories
Kazufumi Takahashi, Masato Minamitsuji, Hayato Motohashi
Abstract
Abstract Generalized disformal transformations enable us to construct the generalized disformal Horndeski theories, which form the most general class of ghost-free scalar-tensor theories to this date. We extend the effective field theory (EFT) of cosmological perturbations to incorporate these generalized disformal Horndeski theories. The main difference from the conventional EFT is that our extended EFT involves operators with higher spatial derivatives of the lapse function. Our EFT also accommodates the generalized disformal transformation of U-DHOST theories.
Topics & Concepts
PhysicsTheoretical physicsScalar (mathematics)Effective field theoryConstruct (python library)Field (mathematics)Transformation (genetics)Scalar fieldTensor (intrinsic definition)Function (biology)Class (philosophy)Statistical physicsMathematical physicsParticle physicsPure mathematicsComputer scienceProgramming languageBiologyMathematicsGeometryGeneArtificial intelligenceBiochemistryEvolutionary biologyChemistryCosmology and Gravitation TheoriesBlack Holes and Theoretical PhysicsPulsars and Gravitational Waves Research