• The density matrix renormalization group (DMRG) is a numerical variational technique devised to obtain the low-energy physics of quantum many-body systems...
    20 KB (3,481 words) - 23:45, 25 May 2025
  • In theoretical physics, the renormalization group (RG) is a formal apparatus that allows systematic investigation of the changes of a physical system...
    50 KB (7,080 words) - 02:22, 8 June 2025
  • Thumbnail for Matrix product state
    one dimensional strongly correlated quantum systems – the density matrix renormalization group (DMRG) algorithm. For a system of N {\displaystyle N} spins...
    20 KB (3,949 words) - 19:40, 19 May 2025
  • Thumbnail for Tensor network
    "Entanglement Renormalization: an introduction". arXiv:0912.1651 [quant-ph]. Schollwock, Ulrich (20 Aug 2010). "The density-matrix renormalization group in the...
    13 KB (1,326 words) - 17:45, 25 May 2025
  • Thumbnail for Germán Sierra
    G. (1998). Equivalence of the variational matrix product method and the density matrix renormalization group applied to spin chains. Europhysics letters...
    48 KB (5,133 words) - 15:17, 23 May 2025
  • block device, as in the Unix File System Superblock, in the density matrix renormalization group numerical technique Superblock algorithm, in the pairwise...
    1 KB (188 words) - 22:59, 14 May 2024
  • quantum spin liquids. He is most known for inventing the Density Matrix Renormalization Group (DMRG) in 1992. This is a numerical variational technique...
    6 KB (506 words) - 03:02, 19 June 2023
  • bound to the ground state energy. The Hartree–Fock method, density matrix renormalization group, and Ritz method apply the variational method. Suppose we...
    13 KB (2,033 words) - 14:14, 25 May 2025
  • Thumbnail for Quantum field theory
    Costello's monograph Renormalization and Effective Field Theory provides a rigorous formulation of perturbative renormalization that combines both the...
    107 KB (14,903 words) - 01:36, 27 May 2025
  • Carlo method QMC@Home Quantum chemistry Quantum Markov chain Density matrix renormalization group Time-evolving block decimation Metropolis–Hastings algorithm...
    10 KB (1,140 words) - 04:47, 13 June 2025
  • higher-order. Many numerical methods such as the Lanczos algorithm, Density Matrix Renormalization Group (DMRG), and other tensor network algorithms are relatively...
    6 KB (772 words) - 09:48, 21 June 2025
  • reduces the complexity of quantum many-body systems. The density matrix renormalization group and matrix product states, for example, implicitly rely on such...
    9 KB (1,608 words) - 10:34, 25 May 2025
  • S2CID 55330505. Schollwöck, Ulrich (2011). "The density-matrix renormalization group in the age of matrix product states". Annals of Physics. 326 (1): 96–192...
    14 KB (1,815 words) - 16:34, 27 March 2025
  • PCP theorem is an open problem. Hamiltonian simulation Density matrix renormalization group Matrix product state Osborne, Tobias J. (2011). "Hamiltonian...
    3 KB (381 words) - 21:21, 19 June 2025
  • [citation needed] One-dimensional lattices may be studied using density matrix renormalization group (DMRG) and related techniques such as time-evolving block...
    27 KB (3,862 words) - 01:23, 19 June 2025
  • Nevertheless, they exhibit a non-trivial ultraviolet fixed point of the renormalization group both in the lattice formulation and in the double expansion originally...
    10 KB (1,287 words) - 19:13, 31 January 2025
  • Thumbnail for History of variational principles in physics
    Hartree–Fock method, 1964 density functional theory and variational Monte Carlo and 1992 density matrix renormalization group (DMRG).[citation needed]...
    35 KB (4,024 words) - 17:12, 16 June 2025
  • Thumbnail for Karen Hallberg
    Hallberg worked on several numerical tools, including the density matrix renormalization group (DMRG), a numerical method that can be used for low-dimensional...
    18 KB (1,748 words) - 20:09, 25 March 2025
  • approaches Density functional theory Lattice gauge theory Matrix product state Neural network quantum states Numerical renormalization group Jenkins, Stephen...
    6 KB (617 words) - 18:14, 12 February 2025
  • Thumbnail for Light-front computational methods
    off-diagonal matrix elements and gauge projections. Physical quantities can then be computed from the right and left LFCC eigenstates. Renormalization concepts...
    74 KB (11,024 words) - 15:47, 17 June 2025
  • usually followed by a related, but independent technique called renormalization. Renormalization is based on the requirement that some physical quantities —...
    20 KB (2,911 words) - 08:31, 24 June 2025
  • Thumbnail for Quantum electrodynamics
    though renormalization works well in practice, Feynman was never entirely comfortable with its mathematical validity, referring to renormalization as a...
    50 KB (6,659 words) - 23:56, 15 June 2025
  • computational techniques is crucial. He has employed Monte Carlo, density matrix renormalization group, and Lanczos methods. Together with collaborators, he also...
    33 KB (3,562 words) - 23:33, 19 June 2025
  • to say that the quantization and renormalization prescriptions were as much part of the model as the Lagrangian density, especially when they relied on...
    58 KB (9,464 words) - 19:44, 7 June 2025
  • exponential scaling, including quantum Monte Carlo and the density matrix renormalization group. Guifré Vidal proposed the scheme while at the Institute...
    35 KB (7,004 words) - 06:29, 25 January 2025
  • Thumbnail for Frank Verstraete
    Cirac, J. I.; Murg, V. (2008). "Matrix Product States, Projected Entangled Pair States, and variational renormalization group methods for quantum spin systems"...
    11 KB (1,058 words) - 20:51, 18 June 2025
  • physics, particularly for his development of density matrix renormalization group methods and the density matrix embedding theory. Theodore Betley (2013,...
    9 KB (1,171 words) - 13:22, 10 March 2025
  • Peter–Weyl theorem (category Theorems in group theory)
    Moreover, the matrix coefficients of the irreducible unitary representations form an orthonormal basis of L2(G). In the case that G is the group of unit complex...
    16 KB (2,480 words) - 07:24, 15 June 2025
  • signatures. Two years later, his group explored the extended spin-1/2 honeycomb XY model using density matrix renormalization group theory, revealing the emergence...
    19 KB (1,898 words) - 19:34, 22 May 2025
  • Kosterlitz–Thouless transition for vortices can therefore be derived from a renormalization group analysis of the sine-Gordon field theory. The sine-Gordon equation...
    34 KB (4,704 words) - 18:45, 27 May 2025