Quantum magnetic properties of the SU(2N) Hubbard model in the square lattice: A quantum Monte Carlo study
نویسندگان
چکیده
Zi Cai,1,2 Hsiang-Hsuan Hung,1,3 Lei Wang,4 and Congjun Wu1 1Department of Physics, University of California, San Diego, California 92093, USA 2Department of Physics and Arnold Sommerfeld Center for Theoretical Physics, Ludwig-Maximilians-Universität München, Theresienstr. 37, 80333 Munich, Germany 3Department of Electrical and Computer Engineering, University of Illinois, Urbana, Illinois 61801, USA 4Theoretische Physik, ETH Zurich, 8093 Zurich, Switzerland (Received 4 April 2013; published 5 September 2013)
منابع مشابه
Quantum Monte Carlo simulations of thermodynamic properties of SU(2N) ultracold fermions in optical lattices
We have systematically studied the thermodynamic properties of a two-dimensional half-filled SU(2N ) Hubbard model on a square lattice by using the determinant quantum Monte Carlo method. The entropytemperature relation, the isoentropy curve, and the probability distribution of the on-site occupation number are calculated in both SU(4) and SU(6) cases, which exhibit prominent features of the Po...
متن کاملQuantum Monte Carlo simulation of thermodynamic properties of SU(2N) ultracold fermions in optical lattices
We have systematically studied the thermodynamic properties of a two-dimensional half-filled SU(2N) Hubbard model on a square lattice by using the determinant quantumMonte Carlo method. The entropy-temperature relation, the isoentropy curve, and the probability distribution of the onsite occupation number are calculated in both SU(4) and SU(6) cases, which exhibit prominent features of the Pome...
متن کاملMagnetic correlations around the Mott transition in the Kagomé lattice Hubbard model
Abstract. We study the magnetic properties around the Mott transition in the Kagomé lattice Hubbard model by the cellular dynamical mean field theory combined with quantum Monte Carlo simulations. By investigating the q-dependence of the susceptibility, we find a dramatic change of the dominant spin fluctuations around the Mott transition. The spin fluctuations in the insulating phase favor dow...
متن کاملFinite-temperature superconducting correlations of the Hubbard model
We utilize numerical linked-cluster expansions (NLCEs) and the determinantal quantum Monte Carlo algorithm to study pairing correlations in the square-lattice Hubbard model. To benchmark the NLCE, we first locate the finite-temperature phase transition of the attractive model to a superconducting state away from half filling. We then explore the superconducting properties of the repulsive model...
متن کاملEstimation of Properties of Low-lying Excited States of Hubbard Models : a Multi-configurational Symmetrized Projector Quantum Monte Carlo Approach
We present in detail the recently developed multiconfigurational symmetrized-projector quantum Monte Carlo (MSPQMC) method for excited states of the Hubbard model. We describe the implementation of the Monte Carlo method for a multiconfigurational trial wavefunction. We give a detailed discussion of issues related to the symmetry of the projection procedure which validates our Monte Carlo proce...
متن کامل