Albrecht, James W.; Menzio, Guido; Vroman, Susan B. - National Bureau of Economic Research - 2021
We consider a version of the imperfect competition model of Butters (1977), Varian (1980) and Burdett and Judd (1983) in which sellers make an ex-ante investment in the quality of their variety of the product. Equilibrium exists, is unique and is efficient. In equilibrium, search frictions not...