Zobrazeno 1 - 10
of 53
pro vyhledávání: '"Stoudenmire, E. Miles"'
We present a minimally entangled typical thermal state (METTS) quantum impurity solver for general multi-orbital systems at finite temperatures. We introduce an improved estimator for the single-particle Green's function that strongly reduces the lar
Externí odkaz:
http://arxiv.org/abs/2312.13668
We present an approach to tame the growth of entanglement during time evolution by tensor network methods. It combines time evolution in the complex plane with a perturbative and controlled reconstruction of correlation functions on the real-time axi
Externí odkaz:
http://arxiv.org/abs/2311.10909
We propose a hierarchical tensor-network approach for approximating high-dimensional probability density via empirical distribution. This leverages randomized singular value decomposition (SVD) techniques and involves solving linear equations for ten
Externí odkaz:
http://arxiv.org/abs/2304.05305
Publikováno v:
Phys. Rev. Research 6, 023227 (2024)
The Kondo lattice is one of the classic examples of strongly correlated electronic systems. We conduct a controlled study of the Kondo lattice in one dimension, highlighting the role of excitations created by the composite fermion operator. Using tim
Externí odkaz:
http://arxiv.org/abs/2302.09701
An asymmetric Bose-Einstein condensation (BEC) dome was observed in a recent experiment on the quantum dimer magnet $\rm Yb_2Si_2O_7$, which is modeled by a "breathing" honeycomb lattice Heisenberg model with possible anisotropies. We report a remark
Externí odkaz:
http://arxiv.org/abs/2209.00032
Autor:
Strashko, Artem, Stoudenmire, E. Miles
While overfitting and, more generally, double descent are ubiquitous in machine learning, increasing the number of parameters of the most widely used tensor network, the matrix product state (MPS), has generally lead to monotonic improvement of test
Externí odkaz:
http://arxiv.org/abs/2208.04372
Autor:
Ayral, Thomas, Louvet, Thibaud, Zhou, Yiqing, Lambert, Cyprien, Stoudenmire, E. Miles, Waintal, Xavier
Publikováno v:
PRX Quantum 4, 020304 (2023)
We develop a density-matrix renormalization group (DMRG) algorithm for the simulation of quantum circuits. This algorithm can be seen as the extension of time-dependent DMRG from the usual situation of hermitian Hamiltonian matrices to quantum circui
Externí odkaz:
http://arxiv.org/abs/2207.05612
We study the ground state and thermodynamic properties of the spin-half XXZ model, with an Ising interaction $J_z$ and a transverse exchange interaction $J_{x}$, on a pyrochlore tube obtained by joining together elementary cubes in a one-dimensional
Externí odkaz:
http://arxiv.org/abs/2203.00032
We extend finite-temperature tensor network methods to compute Matsubara imaginary-time correlation functions, building on the minimally entangled typical thermal states (METTS) and purification algorithms. While imaginary-time correlation functions
Externí odkaz:
http://arxiv.org/abs/2107.13941
Autor:
Wietek, Alexander, Rossi, Riccardo, Šimkovic IV, Fedor, Klett, Marcel, Hansmann, Philipp, Ferrero, Michel, Stoudenmire, E. Miles, Schäfer, Thomas, Georges, Antoine
Publikováno v:
Phys. Rev. X 11, 041013 (2021)
The physics of the triangular lattice Hubbard model exhibits a rich phenomenology, ranging from a metal-insulator transition, intriguing thermodynamic behavior, and a putative spin liquid phase at intermediate coupling, ultimately becoming a magnetic
Externí odkaz:
http://arxiv.org/abs/2102.12904