We present a simple trick that allows us to consider the sum of all connected Feynman
diagrams at fixed position of interaction vertices for general fermionic models, such that the …

We propose a systematic approach to the nonequilibrium dynamics of strongly interacting
many-body quantum systems, building upon the standard perturbative expansion in the …

We present a guiding principle for designing fermionic Hamiltonians and quantum Monte
Carlo (QMC) methods that are free from the infamous sign problem by exploiting the Lie …

We demonstrate that a summing up series of Feynman diagrams can yield unbiased
accurate results for strongly correlated fermions even when the convergence radius …

The study of warm dense matter, widely existing in nature and laboratories, is challenging
due to the interplay of quantum and classical fluctuations. We develop a variational …

Diagrammatic Monte Carlo—the technique for the numerically exact summation of all
Feynman diagrams to high orders—offers a unique unbiased probe of continuous phase …

We present a quantum Monte Carlo algorithm for computing the perturbative expansion in
power of the coupling constant U of the out-of-equilibrium Green's functions of interacting …

We provide a description of a diagrammatic Monte Carlo algorithm for the resonant Fermi
gas in the normal phase. Details are given on the diagrammatic framework, Monte Carlo …

We study attractively interacting spin-1 2 fermions on the square lattice subject to a spin
population imbalance. Using unbiased diagrammatic Monte Carlo simulations we find an …

Building on recent solutions of the fermion sign problem for specific models we present two
continuous-time quantum Monte Carlo methods for efficient simulation of mass-imbalanced …