Quantum complexity (IMAGE) Vienna University of Technology Caption When many quantum particles interact, complex systems can be formed. And this complexity allows reaching a temperature of absolute zero - at least in principle. Credit IQOQI/ÖAW Usage Restrictions please credit IQOQI/ÖAW License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.