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Ratul Lahkar's Research

Ratul Lahkar

  ratul.lahkar@ashoka.edu.in

I am a Professor of Economics in Ashoka University. My primary areas of My research interests are Game Theory, Evolution and Learning in games, Microeconomic theory and Mathematical Economics. Here is a link to my  CV.  

Work in Progress

  • Equilibrium Selection in Aggregative Games under Sampling Dynamics (with A Arun and Souvik Roy).

  • Equilibrium Selection via Stochastic Evolution in Continuum Potential Games (with Sayan Mukherjee and Souvik Roy)

  • An Indirect Evolutionary Approach to Rent-Seeking Norms in Tullock Contests.

Publications

Population Games and Evolution

  • The Best Experienced Payoff Dynamic in the Ultimatum Minigame (with Amarjyoti Mahanta); International Journal of Game Theory, 2025, Volume 54, 17.

  • Implementing Efficiency with Equality (with Sarvesh Bandhu); Journal of Economic Behavior and Orgranization, 2025, Volume 235, 107046.

  • Evolutionary Implementation with Partially Effective Institutions; Mathematical Social Sciences, 2025, Volume 134, 1-13.

  • Appropriability, Institutions and Welfare in a Tullock Contest; Economics and Politics, 2025, Volume 37, 115-145. 

  • Group Selection under the Replicator Dynamic; Dynamic Games and Applicators, 2025, Volume 15, 129-153.

  • Rent Dissipation in Difference-Form Contests;  Mathematical Social Sciences, 2024, Volume 132, 40-48.

  • Affirmative Action in Large Population Tullock Contests (with Rezina Sultana); Public Choice, 2024, Volume 201, 327-353.

  • Emergence of Trust in the Trust Game under Best Experienced Payoff Dynamics (with Srinivas Arigapudi); Economics Letters, 2024, Volume 236, 111620.

  • Rent Dissipation in Large Population Tullock Contests (with Rezina Sultana);  Public Choice, 2023, Volume 197, 253-282.

  • Optimal Large Population Tullock Contests (with Saptarshi Mukherjee) ; Oxford Open Economics, 2023, Volume 2, 1--11.

  • Survival of Altruistic Preferences in a Large Population Public Goods Game (with Sarvesh Bandhu); Economics Letters, 2023, Volume 226, 111113.

  • The Logit Dynamic in Supermodular Games with a Continuum of Strategies: A Deterministic Approximation Approach (with Sayan Mukherjee and Souvik Roy); Games and Economic Behavior, 2023, Volume 139, 133-160.

  • Evolutionary Robustness of Dominant Strategy Implementation (with Sarvesh Bandhu);  Economic Theory, 2023, Volume 76, 685-721.

  • Generalized Perturbed Best Response Dynamics with a Continuum of Strategies (with Sayan Mukherjee and Souvik Roy); Journal of Economic Theory, 2022, Volume 200, 105398. 

  • An Evolutionary Approach to Pollution Control in Competitive Markets (with Vinay Ramani); Dynamic Games and Applications, 2022, Volume 12, 872--896 (special issue on Dynamic Games in Environmental Economics and Management).

  • Evolutionary Implementation in Aggregative Games (with Saptarshi Mukherjee); Mathematical Social Sciences, 2021, Volume 109, 137-151.

  • Dominant Strategy Implementation in a Large Population Public Goods Game (with Saptarshi Mukherjee) ; Economics Letters, 2020, Volume 197, 109616.

  • Convergence to Walrasian Equilibrium with Minimal Information ; Journal of Economic Interaction and Coordination, 2020, Volume 15, 553-578.

  • Elimination of Non-Individualistic Preferences in Large Population Aggregative Games; Journal of Mathematical Economics, 2019, Volume 84, 150-165.

  • Evolutionary Implementation in a Public Goods Game (with Saptarshi Mukherjee); Journal of Economic Theory, 2019, Volume 181, 423-460.

  • Nonatomic Potential Games: The Continuous Strategy Case (with Man Wah Cheung); Games and Economic Behavior,  2018, Volume 108, 341-362 (special issue in honor of Lloyd S. Shapley).

  • An Evolutionary Analysis of Growth and Fluctuations with Negative Externalities (with Anindya S. Chakrabarti); Dynamic Games and Applications, 2018, Volume 8, 733-760.

  • Equilibrium Selection in the Stag Hunt Game under Generalized Reinforcement Learning ; Journal of Economic Behavior and Organization, 2017, Volume 138, 63-68.

  • Productivity Dispersion and Output Fluctuations: An Evolutionary Model  (with Anindya S. Chakrabarti) ; Journal of Economic Behavior and Organization, 2017, Volume 137, 339-360.

  • Large Population Aggregative Potential Games; Dynamic Games and Applications, 2017, Volume 7, 443-467.

  • The Logit Dynamic for Games with Continuous Strategy Sets (with Frank Riedel); Games and Economic Behavior, 2015, Volume 91, 268-282.

  • The Dynamics of Generalized Reinforcement Learning (with Robert M. Seymour); Journal of Economic Theory, 2014, Volume 151, 584-595.

  • Reinforcement Learning in Population Games (with Robert M. Seymour); Games and Economic Behavior, 2013, Volume 80, 10-38.

  • The Dynamic Instability of Dispersed Price Equilibria ; Journal of Economic Theory, 2011, Volume 146, 1796‐1827.

  • The Projection Dynamic and the Replicator Dynamic (with William H. Sandholm and Emin Dokumaci); Games and Economic Behavior, 2008, Volume 64, 666-683.

  • The Projection Dynamic and the Geometry of Population Games  (with William H. Sandholm); Games and Economic Behavior, 2008, Volume 64, 565-590.

 

Applied Economics and Management

  • Can incomplete information lead to better social outcomes? (with Vinay Ramani); Managerial and Decision Economics, 2020, Volume 41; 771-783.

  • Does Multiple Borrowing Necessarily Mean Over-Borrowing? (with Viswanath Pingali and Santadarshan Sadhu); Enterprise Development and Microfinance, 2016, 27; 132-141.

  • Expansion and Welfare in Microfinance: A Screening Model (with Viswanath Pingali); Economic Modelling, 2016, 53, 1-7.

  • Risk Diversification through Multiple Group Formation in Microfinance (with Viswanath Pingali); Applied Economics Letters, 2014, Volume 9, 622-625.

Expository Articles and Book Chapters

  • Tributes to Bill Sandholm  (with Dai Zusai, Ryoji Sawa, Man Wah Cheung, Jiabin Wu); Journal of Dynamics and Games, 2022, Volume 9, 323-350. 

  • A Limit Cycle View of Inequality (with Anindya S. Chakrabarti) (2019); in Network Theory and Agent-Based Modeling in Economics and Finance, eds. Anindya S. Chakrabarti, Lukas Pichl, Taisei Kaizoji, Springer Singapore.

  • Absence of  Economic and Social Constants (with Anindya S. Chakrabarti); The European Physical Journal Special Topics, 2016, Volume 225,  3115-3119.

  • Lending to Low Income Households and Enterprises (with Shilpa Sathe and Arun Kumar D); in Financial Engineering for Low-Income Households, eds. Bindu Ananth and Amit Shah, Sage Publications India, 2012.      

  • Evolution in Bayesian Supermodular Population Games ; Studies in Microeconomics, 2013, Volume 1, 59-80.

  • Evolutionary Game Theory: An Exposition; Indian Growth and Development Review, 2012, Volume 5, 202-213.

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