Chi is the all-pervasive energy that envelops the universe.
The radii of the various enveloping horizons of the universe are given below.
These figures reveal that in f ( R ) Open image in new window gravity the GSL of thermodynamics is valid for all the scenarios under consideration when we are assuming event horizon as the enveloping horizon of the universe.
In Figures 10, 11, and 12 we have plotted the time derivatives of total entropy for the universe in the emergent, intermediate, and logamediate scenarios, respectively, for the universe enveloped by the event horizon.
In the present work we have investigated the validity of generalized second law of thermodynamics in an universe enveloped by Hubble, apparent, particle and event horizons.
In Figures 1, 2, and 3 we have considered three choices of scale factors in a universe enveloped by Hubble horizon and characterized by f ( R ) Open image in new window gravity.
The aim of this handbook is to expand the reader's thinking to one of "big-picture awareness" and a "cosmic vision" of sustainability, a vision that extends from our neighborhoods to our communities, to states, countries, globe, galaxy, and envelops the entire Universe!
Then it enveloped a university athletic program.
Irrespective of the choice of scale factor, enveloping horizon and curvature of the universe, the time derivative of total entropy stays at the positive level.
Under this theory, if you took a God's-eye view of the multiverse, you would see big bangs aplenty generating a tangled melee of universes enveloped in a superstructure of frenetically inflating space.
