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FIELD Physics February 28 (Wed), 2018 16:00-19:00 8101 Bang, Jeongho Bang, Jeongho 고등과학원 Quantum Sensitivity to Additional Information in Decision Making We report on a study of distinctive quantum-mechanical feature in decision making---i.e., quantum decision making---based on a game-theoretic approach. The decision making theory indicates which choices are optimal in a given situation. For example, when the decision is made, an available information, say hint'' here, is interpreted and translated into the optimal choices; however, analyses and calculations of such a process are radically intractable. We thus conjecture that a person who makes the decision uses a pre-programmed algorithm which is immanent, e.g., in his/her brain, and provides probabilistic decision making outcomes. As a main result, we show both theoretically and experimentally that the quantum decision maker can have {\em higher hint-sensitivity} than its classical counterpart. Such a quantum feature originates from the quantum superposition property involved in the decision making process. In our further study, it is also shown that this higher hint-sensitivity can still be observed as long as the quantum superposition remains.

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