Imaginary-time evolution (ITE) on a quantum computer is a promising formalism for
obtaining the ground state of a quantum system. The probabilistic ITE (PITE) exploits …

Partition functions are ubiquitous in physics: They are important in determining the
thermodynamic properties of many-body systems and in understanding their phase …

We present a numerical calculation of the Lee-Yang and Fisher zeros of the 2D Ising model
using multipoint Padé approximants. We perform simulations for the 2D Ising model with …

Lee-Yang zeros are points in the complex plane of an external control parameter at which
the partition function vanishes for a many-body system of finite size. In the thermodynamic …

Determining the phase diagram of interacting quantum many-body systems is an important
task for a wide range of problems such as the understanding and design of quantum …

We investigate the Ising model in one, two, and three dimensions using a cumulant method
that allows us to determine the Lee-Yang zeros from the magnetization fluctuations in small …

Phase transitions are typically accompanied by nonanalytic behaviors of the free energy,
which can be explained by considering the zeros of the partition function in the complex …

We study the partition function of the Ising model on a graph with the help of quantum
computing. The Boltzmann factor is modeled on a quantum computer as a trace of some …

Partition function zeros play a central role in the study of phase transitions. Recently, energy
probability distribution (EPD) zeros were proposed as an alternative approach that solves …

The Gibbs partition function is an important quantity in describing statistical properties of a
system in thermodynamic equilibrium. There are several proposals to calculate the partition …