Psience

AnalyticKineticEnergyConstructor

Provides G and V’ elements from Frederick and Woywood

@classmethod
kinetic_exprs(cls, inds1: 'Iterable[int]', inds2: 'Iterable[int]', coord_types=None, target_symbols=None): 

@classmethod
kinetic_exprs_direct(cls, inds1: 'Iterable[int]', inds2: 'Iterable[int]', coord_types=None, return_vp=True, target_symbols=None): 

Evaluated using the simple expressions in Table 1 from Frederick and Woywood

@classmethod
g(cls, inds1: 'Iterable[int]', inds2: 'Iterable[int]', coord_types=None, target_symbols=None, return_function=False, method='lookup'): 

@classmethod
vp(cls, inds1: 'Iterable[int]', inds2: 'Iterable[int]', coord_types=None, target_symbols=None, return_function=False, method='lookup'): 

@classmethod
g_matrix(cls, coord_specs, return_function=False, return_matrix=True, method='lookup'): 

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