Quantum Many-Body Simulations of the 2D Fermi-Hubbard Model in Ultracold Optical Lattices

Understand

Understanding quantum many-body states of correlated electrons is one main theme in modern condensed matter physics.

• Given that the Fermi-Hubbard model, the prototype of correlated electrons, has been recently realized in ultracold optical lattices, it is highly desirable to have controlled numerical methodology to provide precise finite-temperature results upon doping, to directly compare with experiments.
• Here, we demonstrate the exponential tensor renormalization group (XTRG) algorithm [Phys.
• Rev.