QCaml/Basis/KinInt.mli

18 lines
350 B
OCaml

(** Electronic kinetic energy integrals, expressed as a matrix in a {Basis.t}.
{%
$$
T_{ij} = \left \langle \chi_i \left| -\frac{1}{2} \Delta \right| \chi_j \right \rangle
$$
%}
*)
type t = Lacaml.D.Mat.t
val of_basis : Basis.t -> t
(** Build from a {Basis.t}. *)
val to_file : filename:string -> t -> unit
(** Write the integrals in a file. *)