1. The Swiss Institute for Dryland Environmental and Energy Research, The Jacob Blaustein Institutes for Desert Research, Ben-Gurion University of the Negev, Sede Boqer Campus, 84990 Midreshet Ben-Gurion, Israel
2. Department of Theoretical Physics, University of Geneva, 1211 Geneva, Switzerland
3. Department of Mathematics, Bar-Ilan University, 52900 Ramat-Gan, Israel
4. Zuckerberg Institute for Water Research, The Jacob Blaustein Institutes for Desert Research, Ben-Gurion University of the Negev, Sede Boqer Campus, 84990 Midreshet Ben-Gurion, Israel
5. The Department of Physics, Ben-Gurion University of the Negev, 84105 Beer-Sheva, Israel