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HOWTO

Introduction/tutorial material:

  • iDMRGIntroduction: An introduction to iDMRG for the spin-1/2 chain
  • Variance: Using the energy variance to determine the convergence of iDMRG
  • TimeEvolution: Using TEBD to calculate a simple spectral function for a finite system
  • SingleModeApproximation: Using MPO techniques to calculate the excitation energy of the single-mode approximation for a spin-1 chain

More advanced topics

  • MomentumResolvedES: Calculating the momentum-resolved entanglement spectrum of an infinite cylinder
  • SymmetryProtectedSpinChain: Understanding the spin-1 chain and AKLT model from the perspective of symmetry-protected topological order
  • BinderCumulant: An example for calculating Binder cumulants for infinite systems
  • TDVP: Perform time evolution simulation using the time-dependent variational principle for finite systems
  • PowerLaw: How to represent Hamiltonians with power-law interactions as a sum of exponentials
  • TimeDependentHamiltonians: Performing time evolution simulations with time-dependent Hamiltonians
  • IBC: An introduction to the infinite boundary condition tools
  • ExcitationAnsatz?: An introduction to performing calculations using the MPS excitation ansatz
  • ToricCode: Using iDMRG to find the minimally entangled ground states of the toric code model and manipulate anyonic excitations
  • Troubleshooting: common problems

These old HOWTO documents are obsolete.

  • TutorialDmrg: A tutorial on using the toolkit for some simple groundstate calculations
  • TutorialToric-code: A tutorial on using the toolkit for Toric-code model calculations and some notes for topological system simulations
  • SVNSimpleGuide: A simple tutorial for basic svn commands that are useful in Toolkit
  • HowtoBatch: How to use the DMRG program from a batch queue
  • HowtoFrequency: How to calculate frequency-space Green's functions
  • TutorialShort: Just a list of all the commands needed for calculating the groundstate and spectral function [incomplete?]
  • SpinChain: Commands for running a simple DMRG calculation on a spin chain
  • HowtoFiniteTemperature: How to do calculations at finite temperature
  • LargeScaleCalculations: Some notes on how to configure the DMRG program for large calculations
  • ConfigurationFile: Notes on the configuration file for DMRG and GMRES
  • SymmetricHubbardModel: Some comments on the Wigner-Eckart projection of the {$SO(4)$} symmetric Hubbard basis down to {$U(1)\times U(1)$}
  • DisorderedSystems: Avoiding metastable excited states in disordered systems
  • iDMRG: Infinite size DMRG
  • MKLAndOpen-MPIOptimizations: A guide for making an (heavily-) optimized MKL and OpenMP configuration in a toolkit build

Miscellaneous documents that really belong somewhere else:

  • ExactEnergies: A collection of some exact and numerically-exact results
  • EntanglementCFT: Connection between entanglement, number of states, and CFT in 1+1D
  • SMA: Some notes on excitations and iMPOs
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Page last modified on January 12, 2024, at 09:57 AM