Scalar field as a perfect fluid: thermodynamics of minimally coupled scalars and Einstein frame scalar-tensor gravity
Valerio Faraoni, Serena Giardino, Andrea Giusti, Robert Vanderwee
Abstract
We revisit the analogy between a minimally coupled scalar field in general relativity and a perfect fluid, correcting previous identifications of effective temperature and chemical potential. This provides a useful complementary picture for the first-order thermodynamics of scalar-tensor gravity, paving the way for the Einstein frame formulation (which eluded previous attempts) and raises interesting questions to further develop the analogy.
Topics & Concepts
EinsteinScalar fieldPhysicsGeneral relativityScalar (mathematics)AnalogyClassical mechanicsScalar theories of gravitationTheoretical physicsPerfect fluidf(R) gravityGravitationMathematical physicsClassical field theoryMathematicsQuantum gravityQuantum mechanicsGeometryPhilosophyQuantumLinguisticsCosmology and Gravitation TheoriesBlack Holes and Theoretical PhysicsQuantum Electrodynamics and Casimir Effect