quspin.basis.photon_Hspace_dim

quspin.basis.photon_Hspace_dim(N, Ntot, Nph)[source]

Calculates the dimension of the total spin-photon Hilbert space.

Parameters:

N: int

Number of lattice particles.

Ntot: int

Total number of lattice particles and photons.

Nph: int

Number of photons.

Returns:

int

Dimension of the total spin-photon Hilbert space.

Examples

>>> Ns = photon_Hspace_dim(N,Ntot,Nph)