Recording medium, information processing method, and information processing device

An information processing method executed by a computer, the method comprising:

• calculating an energy of a molecule, based on an energy of each of a plurality of fragments obtained by dividing a structure of the molecule by a molecule dividing method, the calculating the energy including:
• calculating, for a first fragment among the plurality of fragments, a first problem using a first Hamiltonian corresponding to the first fragment, and calculating a first energy corresponding to the first fragment using a result of calculating the first problem;
• and
• calculating, for a second fragment among the plurality of fragments and corresponding to a second Hamiltonian identical or similar to the first Hamiltonian, a second energy corresponding to the second fragment using a result of calculating the first problem.

An information processing device, comprising:

• a memory;
• and
• a processor coupled to the memory, the processor configured to:
• calculate an energy of a molecule, based on an energy of each of a plurality of fragments obtained by dividing a structure of the molecule by a molecule dividing method, the calculating the energy including:
• calculate, for a first fragment among the plurality of fragments, a first problem using a first Hamiltonian corresponding to the first fragment, and calculating a first energy corresponding to the first fragment using a result of calculating the first problem;
• and
• calculate, for a second fragment among the plurality of fragments and corresponding to a second Hamiltonian identical or similar to the first Hamiltonian, a second energy corresponding to the second fragment using a result of calculating the first problem.