[deleted]
Nice article Kate.
To Lee Smolin and Steve Giddings,
A quantum gravity could recognize gravitation as a probability group consisting of all possible past-like states, i.e., all states of greater average density than the present. This is Boltzmann in nature. If the arrow of time is caused by a greater number of disordered states compared to ordered states, then cosmologically speaking we should recognize there also exists the set of all states more ordered or more dense than the present, a group which probabilistically at least attempts to create large-scale order or density, in a sense pulling time backwards. Quantum gravity would thus be seen as the pull of all possible histories trying to recreate themselves. Clearly gravity is trying to recreate the dense past. It follows even that gravity is a measure of time traveling backwards, while expansion is time traveling forwards (quantum expansion).
Further, if we update Boltzmann's notion of more states of disorder, particularly considering accelerating expansion, we need to introduce the ultimate singularity of zero as a possible state in the direction of the future. We then consider past states to be positive in reference to that zero, and calculate the probability influence of all possible histories versus all possible futures (including with future-like possible states the negative or inverse set of possible states beyond zero), in order to calculate the strength of gravity and expansion. In principle the equal sets of states balanced on zero predicts time inevitably ends at zero, as popularized by Caldwell in the Big Rip scenario.
As it turns out, as we approach the empty space singularity it is also necessary to consider the consequence of time reaching zero, as the event is governed by the structure of state space near the zero singularity, i.e., an ever decreasing measure of states which are zero-like (similarly true of the past singularity). We can in this model realize that accelerating expansion is a product of the absolute stability of the true vacuum, with all this leading us toward a timeless perspective of the whole multiverse, where zero is the timeless quantum superposition of all universes.
In the future we will necessarily realize the simple fact that the universe is not simply moving from order to disorder, but rather from the order of a positively dense past, through a temporary transition of disorderly states, to end in a state of high order, i.e., absolute zero, perfect symmetry, the true vacuum, empty space, maximum entropy, implicate order, the infinite, and my favorite: everything forever.
Gevin Giorbran
http://everythingforever.com
