  A mathematical model is presented for the dynamics of time relative to space.
The model design is analogous to a chemical kinetic reaction based on
transition state theory which posits the existence of reactants, activated
complex, and products. Here, time future is considered to be analogous to
reactants, time now to transition state (activated complex) and time past to
products. Thus, future, now, and past events are considered to be distinct from
one another in the progression of time which flows from future to now to past.
The model also incorporates a cyclical reaction (in a quasi-equilibrium state)
between time future and time now as well as an irreversible reaction (that is
unidirectional and not in equilibrium) from time now to time past. The results
from modeling show that modeling time in terms of changes in space can explain
the asymmetric nature of time.
