Spatial curvature and thermodynamics
Narayan Banerjee, Purba Mukherjee, Diego Pavón
Abstract
ABSTRACT Reasonable parametrizations of the current Hubble data set of the expansion rate of our homogeneous and isotropic universe, after suitable smoothing of these data, strongly suggest that the area of the apparent horizon increases irrespective of whether the spatial curvature of the metric is open, flat, or closed. Put in another way, any sign of the spatial curvature appears consistent with the second law of thermodynamics.
Topics & Concepts
PhysicsCurvatureIsotropySmoothingMetric (unit)Sign (mathematics)Apparent horizonStatistical physicsClassical mechanicsTheoretical physicsAstrophysicsHorizonGeometryMathematical analysisQuantum mechanicsAstronomyStatisticsEvent horizonOperations managementMathematicsEconomicsCosmology and Gravitation TheoriesBlack Holes and Theoretical PhysicsGalaxies: Formation, Evolution, Phenomena