Minimal geometric deformation of Yang-Mills-Dirac stellar configurations
Roldão da Rocha
Abstract
The method of minimal geometric deformation (MGD) is used to derive static, strongly gravitating, spherically symmetric, compact stellar distributions that are solutions of the Yang-Mills-Einstein-Dirac coupled field equations on fluid membranes with finite tension. Their solutions characterize MGD Yang-Mills-Dirac stars, whose mass has order of the Chandrasekhar mass, once the range of both the fermionic self-interaction and the Yang-Mills coupling constants is suitably chosen. Physical features of MGD Yang-Mills-Dirac stars are then discussed and their Arnowitt-Deser-Misner masses are derived, as a function of the fermion coupling constant, the finite brane tension, and the Yang-Mills running parameter.
Topics & Concepts
Chandrasekhar limitPhysicsCoupling constantDirac (video compression format)Mathematical physicsDirac equationYang–Mills existence and mass gapStarsFunction (biology)Coupling (piping)Deformation (meteorology)Classical mechanicsQuantum mechanicsWhite dwarfGauge theoryAstrophysicsEvolutionary biologyMeteorologyNeutrinoMechanical engineeringBiologyEngineeringBlack Holes and Theoretical PhysicsCosmology and Gravitation TheoriesNoncommutative and Quantum Gravity Theories