The authors examine a bargaining setting where heterogeneous buyers and sellers are repeatedly matched and time is costly. They characterize efficiency and then, using an implementation approach, study the allocations that can result in equilibrium when the matched buyers and sellers bargain...

We examine a simple bargaining setting, where heterogeneous buyers and sellers are repeatedly matched with each other. We begin by characterizing efficiency in such a dynamic setting, and discuss how it differs from efficiency in a centralized static setting. We then study the allocations which...

We examine Nash implementation when individuals cannot be forced to accept the outcome of a mechanism. Two approaches are studied. The first approach is static where a state-contingent participation constraint de nes an implicit mapping from rejected outcomes into outcomes that are individually...