netket.models#

This sub-module contains several pre-built models to be used as neural quantum states.

`LogStateVector`	_Exact_ ansatz storing the logarithm of the full, exponentially large wavefunction coefficients.
`RBM`	A restricted boltzman Machine, equivalent to a 2-layer FFNN with a nonlinear activation function in between.
`RBMModPhase`	A fully connected Restricted Boltzmann Machine (RBM) with real-valued parameters.
`RBMMultiVal`	A fully connected Restricted Boltzmann Machine (see `netket.models.RBM`) suitable for large local hilbert spaces.
`RBMSymm`	A symmetrized RBM using the netket.nn.DenseSymm layer internally.
`Jastrow`	Jastrow wave function \(\Psi(s) = \exp(\sum_{ij} s_i W_{ij} s_j)\).
`MPSPeriodic`	A periodic Matrix Product State (MPS) for a quantum state of discrete degrees of freedom, wrapped as Jax machine.
`NDM`	Encodes a Positive-Definite Neural Density Matrix using the ansatz from Torlai and Melko, PRL 120, 240503 (2018).
`GCNN`	Implements a Group Convolutional Neural Network (G-CNN) that outputs a wavefunction that is invariant over a specified symmetry group.
`AbstractARNN`	Base class for autoregressive neural networks.
`ARNNDense`	Autoregressive neural network with dense layers.
`ARNNConv1D`	Autoregressive neural network with 1D convolution layers.
`ARNNConv2D`	Autoregressive neural network with 2D convolution layers.
`FastARNNConv1D`	Fast autoregressive neural network with 1D convolution layers.
`FastARNNConv2D`	Fast autoregressive neural network with 2D convolution layers.
`DeepSetMLP`	Implements the DeepSets architecture, which is permutation invariant.
`MLP`	A Multi-Layer Perceptron with hidden layers.

The following models are particularly suited for systems with continuous degrees of freedom (netket.hilbert.Particle)

`Gaussian`	Multivariate Gaussian function with mean 0 and parametrised covariance matrix \(\Sigma_{ij}\).
`DeepSetRelDistance`	Implements an equivariant version of the DeepSets architecture given by (https://arxiv.org/abs/1703.06114)

The following models are experimental and related to fermions (netket.experimental.hilbert.SpinOrbitalFermions)

Slater2nd

A slater determinant ansatz for second-quantised spinless or spin-full fermions.