Static, spherically symmetric objects in type-II minimally modified gravity
Antonio De Felice, Shinji Mukohyama, Masroor C. Pookkillath
Abstract
Static, spherically symmetric solutions representing stars made of barotropic perfect fluid are studied in the context of two theories of type-II minimally modified gravity, VCDM and VCCDM. Both of these theories share the property that no additional degree of freedom is introduced in the gravity sector, and propagate only two gravitational waves besides matter fields, as in General Relativity (GR). We find that, on imposing physical boundary conditions on the Misner-Sharp mass of the system, the solutions in V(C)CDM exactly coincide with the ones in GR; namely, they also satisfy the Tolman-Oppenheimer-Volkoff equation.
Topics & Concepts
PhysicsBarotropic fluidGeneral relativityPerfect fluidContext (archaeology)Classical mechanicsGravitationType (biology)Boundary (topology)Starsf(R) gravityGravitational waveTheoretical physicsMathematical physicsMathematical analysisMathematicsMechanicsAstrophysicsQuantum gravityQuantum mechanicsEcologyPaleontologyBiologyQuantumCosmology and Gravitation TheoriesBlack Holes and Theoretical PhysicsGeophysics and Gravity Measurements