MICROSCOPIC-SHOCK PROFILES - EXACT SOLUTION OF A NONEQUILIBRIUM SYSTEM

The full microscopic structure of macroscopic shocks is obtained exact ly in the one-dimensional totally asymmetric simple exclusion process from the complete solution of the uniform stationary non-equilibrium s tate of a system containing two types of particles-<<first>> and <<sec ond>> class. The width of the shock as seen from a second-class partic le diverges as the inverse square of its strength when the latter goes to zero. In that limit the steady state exhibits long-range correlati ons and weakly bound states of second-class particles.