{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,10,12]],"date-time":"2025-10-12T03:50:13Z","timestamp":1760241013282,"version":"build-2065373602"},"reference-count":25,"publisher":"MDPI AG","issue":"11","license":[{"start":{"date-parts":[[2019,11,10]],"date-time":"2019-11-10T00:00:00Z","timestamp":1573344000000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"DOI":"10.13039\/501100004281","name":"Narodowe Centrum Nauki","doi-asserted-by":"publisher","award":["2016\/23\/D\/ST1\/01557"],"award-info":[{"award-number":["2016\/23\/D\/ST1\/01557"]}],"id":[{"id":"10.13039\/501100004281","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Entropy"],"abstract":"<jats:p>Playing the Cournot duopoly in the quantum domain can lead to the optimal strategy profile in the case of maximally correlated actions of the players. However, that result can be obtained if the fact that the players play the quantum game is common knowledge among the players. Our purpose is to determine reasonable game outcomes when players\u2019 perceptions about what game is actually played are limited. To this end, we consider a collection consisting of the classical and quantum games that specifies how each player views the game and how each player views the other players\u2019 perceptions of the game. We show that a slight change in how the players perceive the game may considerably affect the result of the game and, in the case of maximally correlated strategies, may vary from the inefficient Nash equilibrium outcome in the classical Cournot duopoly to the Pareto optimal outcome. We complete our work by investigating in the same way the Bertrand duopoly model.<\/jats:p>","DOI":"10.3390\/e21111097","type":"journal-article","created":{"date-parts":[[2019,11,12]],"date-time":"2019-11-12T04:07:07Z","timestamp":1573531627000},"page":"1097","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":5,"title":["Quantum Games with Unawareness with Duopoly Problems in View"],"prefix":"10.3390","volume":"21","author":[{"ORCID":"https:\/\/orcid.org\/0000-0003-0034-9803","authenticated-orcid":false,"given":"Piotr","family":"Fr\u0105ckiewicz","sequence":"first","affiliation":[{"name":"Institute of Exact and Technical Sciences, Pomeranian University, 76-200 Slupsk, Poland"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Jakub","family":"Bilski","sequence":"additional","affiliation":[{"name":"Institute of Exact and Technical Sciences, Pomeranian University, 76-200 Slupsk, Poland"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"1968","published-online":{"date-parts":[[2019,11,10]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"3077","DOI":"10.1103\/PhysRevLett.83.3077","article-title":"Quantum games and quantum strategies","volume":"83","author":"Eisert","year":"1999","journal-title":"Phys. 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