Many Body Thermodynamics on Quantum Computers via Partition Function Zeros

Understand

Interacting quantum systems illustrate complex phenomena including phase transitions to novel ordered phases.

• The universal nature of critical phenomena reduces their description to determining only the transition temperature and the critical exponents.
• Numerically calculating these results for systems in new universality classes is complicated due to critical slowing down, requiring increasing resources near the critical point.
• An alternative approach analytically continues the calculation onto the complex plane and determines the partition function via its zeros.