Institution: | 1. Departament d'Economia i Empresa and Barcelona Graduate School of Economics, Universitat Pompeu Fabra, c/Ramon Trias Fargas, 25–27, 08005 Barcelona, Spain;2. Department of Physics, Center for Quantum Science and Engineering, Stevens Institute of Technology, Castle Point on Hudson, Hoboken, NJ 07030, USA;3. Department of Mathematics, Baruch College, The City University of New York, 1 Bernard Baruch Way, New York, NY 10010, USA;4. Department of Mathematical Sciences, Ritsumeikan University, Noji-higashi 1-1-1, Kusatsu, Shiga 525-8577, Japan |