The Dynamics of Money
We present a dynamical many-body theory of money in which the value of money is a time dependent ``strategic variable'' that is chosen by the individual agents. The value of money in equilibrium is not fixed by the equations, and thus represents a continuous symmetry. The dynamics breaks this continuous symmetry by fixating the value of money at a level which depends on initial conditions. The fluctuations around the equilibrium, for instance in the presence of noise, are governed by the ``Goldstone modes'' associated with the broken symmetry. The idea is illustrated by a simple network model of monopolistic vendors and buyers.
|Date of creation:||Nov 1998|
|Date of revision:||May 1999|
|Publication status:||Published in Phys. Rev. E 60, 2528-2532 (1999)|
|Contact details of provider:|| Web page: http://arxiv.org/|