Gravitational antiscreening in stellar interiors
A. Bonanno, R. Casadio, A. Platania
Abstract
A new class of relativistic stellar structure equations which include the effects of an energy-dependent Newton coupling is presented. Significant modifications in the mass-radius relation for neutron stars are possible only if the running of the Newton coupling due to quantum gravity occurs at low energies. A new Buchdahl limit is derived and its physical implications are discussed. In particular, sub-Planckian self-gravitating objects with arbitrarily small radii are possible.
Topics & Concepts
PhysicsNeutron starCoupling (piping)GravitationAstrophysicsStellar structureStarsLimit (mathematics)General relativityGravitational fieldClassical mechanicsQuantum gravityGravitational collapseComputational astrophysicsStellar black holeGravitational energyAstronomyQuantumClass (philosophy)Relativistic quantum chemistryCosmologyBlack hole (networking)Stellar evolutionCosmology and Gravitation TheoriesPulsars and Gravitational Waves ResearchNoncommutative and Quantum Gravity Theories