Dilute dipolar quantum droplets beyond the extended Gross-Pitaevskii equation by Fabian Böttcher, Matthias Wenzel, Jan-Niklas Schmidt, Mingyang Guo, Tim Langen, Igor Ferrier-Barbut, Tilman Pfau, Raúl Bombín, Joan Sánchez-Baena, Jordi Boronat, Ferran Mazzanti

“…Here we present a systematic study of the critical atom number of these self-bound droplets, comparing the experimental results with extended mean-field Gross-Pitaevskii equation and quantum Monte Carlo simulations of the dilute system. The respective theoretical predictions differ, questioning the validity of the current theoretical state-of-the-art description of quantum droplets within the extended Gross-Pitaevskii equation framework and indicating that correlations in the system are significant. …”
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Signatures of the BCS-BEC crossover in the yrast spectra of Fermi quantum rings by Ulrich Ebling, Ali Alavi, Joachim Brand

“…In the one-dimensional (1D) case we solve the Hubbard model using the Bethe ansatz, while for the crossover into the 2D regime we use the Full-Configuration-Interaction Quantum Monte Carlo method to obtain the yrast states for the spin-balanced Fermi system. …”
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Path Integral Estimates of the Quantum Fluctuations of the Relative Soliton-Soliton Velocity in a Gross-Pitaevskii Breather by Sumita Datta, Vanja Dunjko, Maxim Olshanii

“…The results of an ab initio quantum Monte Carlo calculation, based on the Feynman-Kac path integration method, are compared with the analytical predictions using the recently suggested approach within the Bogoliubov approximation, and a good agreement is obtained.…”
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The spin-1/2 Heisenberg ferromagnet on the pyrochlore lattice: A Green's function study by T. Hutak, P. Müller, J. Richter, T. Krokhmalskii, O. Derzhko

“…To this end, we use the Green's function technique within the random-phase (or Tyablikov) approximation as well as the linear spin-wave theory and quantum Monte Carlo simulations. We compare our results to the ones obtained recently by other methods to corroborate our findings. …”
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Finite size analysis for interacting bosons at the one-two dimensional crossover by Lorenzo Pizzino, Hepeng Yao, Thierry Giamarchi

“…In this work, we extend the analysis of interacting bosons at 2D-1D dimensional crossover for finite size and temperature by using the field theory approach (bosonization) and quantum Monte Carlo simulations. Stemming from the fact that finite size low-dimensional systems are allowed only to have quasiordered phase, we consider the self-consistent harmonic approximation to compute the fraction of quasicondensate and its scaling with the system size. …”
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Hidden-nucleons neural-network quantum states for the nuclear many-body problem by Alessandro Lovato, Corey Adams, Giuseppe Carleo, Noemi Rocco

“…Thanks to its polynomial scaling with the number of nucleons, this method opens the way to highly-accurate quantum Monte Carlo studies of medium-mass nuclei.…”
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Interaction-driven phase transition in one dimensional mirror-symmetry protected topological insulator by Devendra Singh Bhakuni, Amrita Ghosh, Eytan Grosfeld

“…The results are obtained using density-matrix renormalization group and quantum Monte-Carlo simulations in applicable limits.…”
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A path integral ground state Monte Carlo algorithm for entanglement of lattice bosons by Emanuel Casiano-Diaz, C. M. Herdman, Adrian Del Maestro

“…A ground state path integral quantum Monte Carlo algorithm is introduced that allows for the study of entanglement in lattice bosons at zero temperature. …”
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Spin-Peierls transition in 2D Heisenberg model with bond phonons. by Lu, Wuyin.

“…Two kinds of possible dimerization patterns of Spin-Peierls transition in a 2D spin-1/2 Heisenberg model antiferromagnetic coupled to bond phonons with variable inter-chain coupling strength, corresponding to wave vectors Q=(π,0) andQ=(π,π), are investigated by using the Stochastic Series Expansion Quantum Monte Carlo method. The system is simulated by spin-1/2 Heisenberg Model with Nearest-Neighbor with inter-chain antiferromagnetic coupling. …”
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Theoretical study of the cage water hexamer structure by Gregory, J, Clary, D

“…Quantum simulation using the diffusion quantum Monte Carlo method is used to show that the ground state wave function is dominated by one minimum in the water hexamer potential.…”

Diffusion Monte Carlo simulations of the dipole-bound state of the water dimer anion by Clary, D, Benoit, D

“…It is shown how the diffusion quantum Monte Carlo method for solving the Schrödinger equation can be adapted to calculate the lowest energy state of a dipole-bound cluster anion. …”

Few- and many-body physics of dipoles in ion traps and optical lattice simulators by Safavi-Naini, Arghavan

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Holographic quantum critical conductivity from higher derivative electrodynamics by Jian-Pin Wu

“…First, a rescaling for the Euclidean frequency by a constant is needed when fitting the quantum Monte Carlo (QMC) data for the O(2) QCP. We conclude that it is a common characteristic of the higher derivative electrodynamics. …”
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Quantum Coulomb glass on the Bethe lattice by Izabella Lovas, Annamária Kiss, Cătălin Paşcu Moca, Gergely Zaránd

“…We combine self-consistent diagrammatic perturbation theory with continuous time quantum Monte-Carlo simulations to obtain the complete phase diagram of the electron glass and to characterize its dynamical properties in the quantum liquid, as well as in the replica symmetry broken glassy phase. …”
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Chiral superconductivity in the doped triangular-lattice Fermi-Hubbard model in two dimensions by Vinicius Zampronio, Tommaso Macrì

“…Here we simulate two-dimensional and quasi-one-dimensional triangular lattices using state-of-the-art Auxiliary-Field Quantum Monte Carlo. Upon doping a non-magnetic chiral spin state, we observe evidence of chiral superconductivity supported by long-range order in Cooper-pair correlation and a finite value of the chiral order parameter. …”
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Photoemission "experiments" on holographic lattices by Filip Herček, Vladan Gecin, Mihailo Čubrović

“…Comparing the holographic Green functions in imaginary frequency with the Green functions of the Hubbard model obtained from quantum Monte Carlo, we find that the holographic model provides a very good fit to the Hubbard Green function. …”
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Topological to magnetically ordered quantum phase transition in antiferromagnetic spin ladders with long-range interactions by Luhang Yang, Phillip Weinberg, Adrian E. Feiguin

“…Using large scale quantum Monte Carlo (QMC) and density matrix renormalization group (DMRG) simulations, we show that this model undergoes a transition from a rung-dimer phase characterized by a non-local string order parameter, to a symmetry broken N\'eel phase. …”
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Strong-coupling Bose polarons in one dimension: Condensate deformation and modified Bogoliubov phonons by J. Jager, R. Barnett, M. Will, M. Fleischhauer

“…A comparison of polaron energies and masses to diffusion quantum Monte Carlo simulations shows very good agreement already on the level of analytical mean-field solutions and is further improved when taking into account quantum fluctuations.…”
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Combined spontaneous symmetry-breaking and symmetry-protected topological order from cluster charge interactions by Chen Peng, Rong-Qiang He, Yuan-Yao He, Zhong-Yi Lu

“…Here we report a concrete example by employing a large-scale unbiased quantum Monte Carlo study of the Kane-Mele model with cluster charge interactions. …”
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Strongly-interacting bosons at 2D-1D dimensional crossover by Hepeng Yao, Lorenzo Pizzino, Thierry Giamarchi

“…Using a continuous quantum Monte Carlo method, we investigate this dimensional crossover by computing longitudinal and transverse superfluid fraction as well as the superfluid correlation as a function of temperature, interactions and potential. …”
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