money and capital abstract the effects of money anticipated inflation on capital formation is a classic issue in macroeconomics previous papers adopt reduced form approaches putting money in the utility function or imposing cash in advance but using otherwise frictionless models we follow instead a literature that tries to be explicit about the frictions making money essential this introduces new elements including a two sector structure with centralized and decentralized markets stochastic trading opportunities and bargaining these elements matter quantitatively and numerical results differ from findings in the reduced form literature the analysis also reduces a gap between microfounded monetary economics and mainstream macro

a model of debit card as a means of payment abstract this paper provides an explanation for both the rapid growth in the use of a debit card over time and the cross sectional difference in the use of a debit card using a search theoretic model the trade off between cash and a debit card as means of payment is incorporated such that a buyer incurs disutility cost proportional to the amount of cash holdings while a seller accepting a debit card bears a fixed record keeping cost regardless of transaction amount as record keeping cost decreases with the development of information technology over time disutility cost of cash holdings required for pairwise trade eventually exceeds record keeping cost so that all the agents with different wealth levels choose to use a debit card as a means of payment also disutility cost of cash holdings required for pairwise trade would be higher for the rich than for the poor implying the cross sectional feature of payment pattern that the rich use a debit card more frequently than the poor there are two distinct mechanisms that improve welfare as record keeping cost decreases one is to reduce deadweight loss from holding cash and the other is to reduce its distortionary effect on output produced in pairwise trade

general equilibrium with nonconvexities and money in a general equilibrium economy with nonconvexities there are sunspot equilibria with good welfare properties sunspots can ameliorate the effects of the nonconvexities for these economies we show that agents act as if they have quasi linear utility functions we use this result to construct a new model of monetary exchange along the lines of lagos and wright where trade occurs in both centralized and decentralized markets but instead of quasi linear preferences we assume general preferences but with indivisible labor this suggests that modern monetary theory is more robust than one might have thought it also constitutes progress on the classic problem of integrating monetary economics and general equilibrium theory

a rudimentary random matching model with divisible money and prices abstract we consider a version of kiyotaki and wright s monetary search model in which agents can hold arbitrary amounts of divisible money a continuum of stationary equilibria indexed by the aggregate real money stock exists with all trading occurring at a single price there is always a maximum level of the real money stock consistent with existence of such an equilibrium in the limit as trading becomes faster relative to discounting any real money stock becomes feasible in such an equilibrium in contrast to the original kiyotaki wright model higher equilibrium real money stocks unambiguously correspond to higher welfare in this costless production environment journal of economic literature classification numbers d51 e40

float on a note abstract from 1863 1914 banks in the u s could issue notes subject to full collateral a tax on outstanding notes redemption of notes on demand and a clearing fee per issued note cleared through the treasury the system failed to satisfy a purported arbitrage condition the yield on collateral exceeded the tax rate plus the product of the clearing fee and the average clearing rate of notes the failure is explained by a model in which note issuers choose to issue notes only in trades that produce a low clearing rate high float but in which there are diminishing returns to additional note issue

dollarization and currency exchange abstract we use a dual currency money search model to study dollarization agents hold portfolios consisting of two currencies one of which is risky we use numerical methods to solve for the steady state distributions of currency portfolios transaction patterns and value functions as risk increases agents increasingly use the safe currency as a medium of exchange dollarization occurs furthermore the safe currency trades for multiple units of the risky currency this type of currency exchange and the corresponding nominal exchange rate are often observed in black market or unofficial currency exchange markets in developing countries due to decentralized trading a distribution of exchange rates arises whose mean and variance change in predictable ways when currency risk increases

the distribution of money balances and the nonneutrality of money recent monetary models with explicit microfoundations are made tractable by assuming that agents have access to centralized markets after one round of decentralized trade given quasi linear preferences this makes the distribution of money degenerate which keeps the models simple but precludes the discussion of distributional effects of monetary policy we generalize these models by assuming two rounds of trade before agents can readjust their money holdings to study a range of new distributional effects analytically we show that unexpected symmetric lump sum money injections may increase short run output and welfare whereas asymmetric injections may increase long run output and welfare

existence of a monetary steady state in a matching model indivisible money abstract existence of a monetary steady state is established for a random matching model with divisible goods indivisible money an arbitrary bound on individual money holdings and take it or leave it offers by consumers the background environment is that in papers by shi and by trejos and wright the monetary steady state shown to exist has nice properties the value function defined on money holdings is strictly increasing and strictly concave and the measure over money holdings has full support

a divisible search model of fiat money this paper extends the kiyotaki wright search model of fiat money to allow for divisible money and goods the extension allows me to examine the standard issues in monetary economics such as the neutrality and superneutrality of money by severing the artificial link in the kiyotaki wright model between the money supply and the number of money holders it is shown that money is neutral but not superneutral money growth generates a trading opportunity effect it changes the fraction of different agents in the economy and hence changes the probability with which agents have a successful match in addition money growth has a negative effect on the real money balance that is familiar in walrasian monetary models the balance of the two effects can imply a positive optimal money growth rate

search bargaining money and prices the goal of this paper is to extend existing search theoretic models of fiat money which until now have assumed that the price level is exogenous by explicitly incorporating bilateral bargaining this allows us to determine the price level endogenously and leads to additional insights concerning the role of money for example we find that monetary equilibria are generally inefficient in the sense that output and prices differ from the solution to a social planner s problem although the difference can become small as the discount rate or search friction vanishes we also find that there exist nonstationary inflationary equilibria

optimal money creation in pure currency economies a conjecture in a pure currency economy money is the only durable object and people have private histories in such economies taxation is not feasible and in some of them trade is enhanced through the use of money for economies of that kind in which a nondegenerate distribution of money part of the state of the economy affects trades and real outcomes and in which trades affect the state at the next date the conjecture is that there are transfer schemes financed by money creation that improve ex ante representative agent welfare relative to what can be achieved holding the stock of money fixed jel codes e52 e58 copyright 2014 oxford university press

modeling denomination structures previous work on the denomination structure of currency treats as exogenous the distribution of transactions and the denominations held by people here by way of a matching model both are endogenous in the model trades in pairwise meetings alternate in time with the opportunity to freely choose a portfolio of denominations and there is a trade off between the benefits of small denomination money for transacting and the costliness of carrying a large quantity of small denomination money for a given denomination structure a monetary steady state is shown to exist the model implies that too small denominations are abandoned

money and price dispersion we relax restrictions on the storage technology in a prototypical monetary search model to study price dispersion in this case buyers and sellers enter matches with potentially different willingness to trade across the distribution of possible bilateral matches prices generally will differ even though agents have identical preferences and technologies we provide existence conditions for a particularly simple equilibrium pattern of exchange we prove that in the limiting case where search frictions are eliminated equilibrium prices are uniform we also show that a higher initial money stock can raise the average price level and increase price dispersion

inflation and unemployment in general equilibrium when labor is indivisible there exist ecient outcomes with some agents randomly unemployed rogerson 1988 we integrate this idea into the modern theory of monetary exchange where some trade occurs in centralized markets and some in decentralized markets as in lagos and wright 2006 this delivers a general equilibrium model of unemployment and money with explicit microeconomic foundations we show the implied relation between inflation and unemployment can be positive or negative depending on simple preference conditions our phillips curve provides a long run exploitable trade o for monetary policy it turns out however that the optimal policy is the friedman rule

nonneutrality of money in dispersion hume revisited for a class of standard and widely used preferences a one shot money injection in a standard matching model can induce a significant and persistent output response by dispersing the distribution of wealth decentralized trade matters for both persistence and significance in the presence of government bonds the injection has a liquidity effect and the inflation rate right following the injection may be below the steady state rate level

dynamic monetary equilibrium in a random matching economy this article concerns an infinite horizon economy where trade must occur pairwise using a double auction mechanism and where fiat money overcomes lack of double coincidence of wants traders are anonymous and lack market power goods are divisible and perishable and are consumed at every date preferences are defined by utility stream overtaking money is divisible and not subject to inventory constraints the evolution of individual and economywide money holdings distributions is characterized there is a welfare ordered continuum of single price equilibria reflecting indeterminacy of the price level rather than of relative prices

viewpoint a microfoundation of monetary economics in this lecture i explain what the microfoundations of money are about and why they are necessary for monetary economics then i review recent developments of a particular microfoundation of money commonly known as the search theory of money finally i outline some unresolved issues dans cette presentation l auteur explique ce que sont les microfondations de la monnaie et pourquoi elles sont necessaires a l economie monetaire ensuite il passe en revue certains developpements recents d une microfondation particuliere de la monnaie connue sous le nom de theorie de la recherche de la monnaie enfin l auteur fait le tour d un ensemble de problemes qui restent sans solution pour le moment

liquidity and asset market dynamics this study analyzes economies with an essential role for liquid assets in the exchange process the model can generate multiple stationary equilibria across which asset prices market participation capitalization output and welfare are positively related it can also generate a variety of nonstationary equilibria even when fundamentals are deterministic and time invariant including periodic chaotic and stochastic sunspot equilibria with recurrent market crashes some equilibria have asset price trajectories that resemble bubbles growing and bursting endogenous private and public liquidity is also introduced sometimes it is efficient to provide enough liquid assets to satiate demand other times it is not

on money as a medium of exchange we analyze economies in which individuals specialize in consumption and production and meet randomly over time in a way that implies that trade must be bilateral and quid pro quo nash equilibria in trading strategies are characterized certain goods emerge endogenously as media of exchange or commodity money depending both on their intrinsic properties and on extrinsic beliefs there are also equilibria with genuine fiat currency circulating as the general medium of exchange we find that equilibria are not generally pareto optimal and that introducing fiat currency into a commodity money economy may unambiguously improve welfare velocity acceptability and liquidity are discussed

return on commodity money small change problems and fiat money we construct a search theoretic model of commodity money where a penny is an indivisible silver coin that can be either melted into a silver bar yielding a positive return or used as a medium of exchange in equilibria where the rate of return on silver is sufficiently high small change problems arise in the form of too much trade inefficiency because of a too high value of a penny and no trade inefficiency because of a shortage of coins in circulation in the fiat money system however trades are not affected at all by the rate of return on silver and the value of a penny is determined by its medium of exchange role without incurring the loss in efficiency due to small change problems

a unified framework for monetary theory and policy analysis search theoretic models of monetary exchange are based on explicit descriptions of the frictions that make money essential however tractable versions of these models typically make strong assumptions that render them ill suited for monetary policy analysis we propose a new framework based on explicit micro foundations within which macro policy can be studied the framework is analytically tractable and easily quantifiable we calibrate the model to standard observations and use it to measure the cost of inflation we find that going from 10 percent to 0 percent inflation is worth between 3 and 5 percent of consumption much higher than previous estimates

money and prices a model of search and bargaining abstract this paper makes commodities divisible and incorporates bargaining into the search theoretic model of money to determine the purchasing power of money or price it is shown that two monetary equilibria always coexist where fiat money is universally accepted the two equilibria differ in price output welfare and the velocity of money sunspot monetary equilibria exist in which money is universally accepted in all states of the economy multiplicity has novel implications on the effectiveness of currency substitution and exchange market intervention journal of economic literature classification numbers c78 e40

strategic bidding under uncertainty a binary expansion approach this work presents a binary expansion be solution approach to the problem of strategic bidding under uncertainty in short term electricity markets the be scheme is used to transform the products of variables in the nonlinear bidding problem into a mixed integer linear programming formulation which can be solved by commercially available computational systems the be scheme is applicable to pure price pure quantity or joint price quantity bidding models it is also possible to represent transmission networks uncertainties scenarios for price quantity plant availability and load financial instruments capacity reinforcement decisions and unit commitment the application of the methodology is illustrated in case studies with configurations derived from the 80 gw brazilian system

a matching model with bounded holdings of indivisible money recent versions of pairwise random matching models of money with divisible and perishable goods are amended to allow individuals to hold more than one unit of an indivisible asset the asset resembles a fiat asset except that nominal holdings of it yield a small amount of utility there is a general upper bound on the number of units of the asset that individuals can hold a steady state with trade is shown to exist the model is applied to study numerically the effect on welfare of the degree to which the asset is divisible

allocating greenhouse gas emissions in the german federal system regional interests and federal climate governance abstract the academic debate on climate policies often portrays germany as one of the most successful cases despite its federal system of joint decision making most studies of german climate policy focus primarily upon activities at the national level while disregarding the heterogeneous economic interests and veto options of the lander using the cases on renewable energy policy and emission trading we analyze the subnational interests and institutional mechanisms that shape the intergovernmental negotiations and policy outcomes within the federated system the cases confirm assumptions made by general research on german federalism according to which strategies for the externalization and compensation of costs are of particular importance for redistributive policies and the eu plays a major role in dissolving potential barriers to the process of federal policy formation contrary to the reservations often expressed we demonstrate that climate policies have led to an increased economic and political competition between the lander and have supported effective solutions however recent shortfalls in the effectiveness of emission trading and in the cost efficiency of renewable energy policies indicate that redistributive conflicts in the allocation of greenhouse gas emissions have to be addressed more systematically within the german and the european system s of joint decision making