Line data    Source code

       1              : !--------------------------------------------------------------------------------------------------!
       2              : !   CP2K: A general program to perform molecular dynamics simulations                              !
       3              : !   Copyright 2000-2025 CP2K developers group <https://cp2k.org>                                   !
       4              : !                                                                                                  !
       5              : !   SPDX-License-Identifier: GPL-2.0-or-later                                                      !
       6              : !--------------------------------------------------------------------------------------------------!
       7              : 
       8              : ! **************************************************************************************************
       9              : !> \brief
      10              : !> \author Jan Wilhelm
      11              : !> \date 07.2023
      12              : ! **************************************************************************************************
      13              : MODULE gw_main
      14              :    USE gw_large_cell_Gamma,             ONLY: gw_calc_large_cell_Gamma
      15              :    USE gw_small_cell_full_kp,           ONLY: gw_calc_small_cell_full_kp
      16              :    USE gw_utils,                        ONLY: create_and_init_bs_env_for_gw
      17              :    USE input_constants,                 ONLY: large_cell_Gamma,&
      18              :                                               small_cell_full_kp
      19              :    USE input_section_types,             ONLY: section_vals_type
      20              :    USE post_scf_bandstructure_types,    ONLY: post_scf_bandstructure_type
      21              :    USE qs_environment_types,            ONLY: qs_environment_type
      22              : #include "./base/base_uses.f90"
      23              : 
      24              :    IMPLICIT NONE
      25              : 
      26              :    PRIVATE
      27              : 
      28              :    CHARACTER(len=*), PARAMETER, PRIVATE :: moduleN = 'gw_main'
      29              : 
      30              :    PUBLIC :: gw
      31              : 
      32              : CONTAINS
      33              : 
      34              : ! **************************************************************************************************
      35              : !> \brief Perform GW band structure calculation
      36              : !> \param qs_env ...
      37              : !> \param bs_env ...
      38              : !> \param post_scf_bandstructure_section ...
      39              : !> \par History
      40              : !>    * 07.2023 created [Jan Wilhelm]
      41              : ! **************************************************************************************************
      42           28 :    SUBROUTINE gw(qs_env, bs_env, post_scf_bandstructure_section)
      43              :       TYPE(qs_environment_type), POINTER                 :: qs_env
      44              :       TYPE(post_scf_bandstructure_type), POINTER         :: bs_env
      45              :       TYPE(section_vals_type), POINTER                   :: post_scf_bandstructure_section
      46              : 
      47              :       CHARACTER(LEN=*), PARAMETER                        :: routineN = 'gw'
      48              : 
      49              :       INTEGER                                            :: handle
      50              : 
      51           28 :       CALL timeset(routineN, handle)
      52              : 
      53           28 :       CALL create_and_init_bs_env_for_gw(qs_env, bs_env, post_scf_bandstructure_section)
      54              : 
      55           34 :       SELECT CASE (bs_env%small_cell_full_kp_or_large_cell_Gamma)
      56              : 
      57              :       CASE (small_cell_full_kp)
      58              : 
      59            6 :          CALL gw_calc_small_cell_full_kp(qs_env, bs_env)
      60              : 
      61              :       CASE (large_cell_Gamma)
      62              : 
      63           28 :          CALL gw_calc_large_cell_Gamma(qs_env, bs_env)
      64              : 
      65              :       END SELECT
      66              : 
      67           28 :       CALL timestop(handle)
      68              : 
      69           28 :    END SUBROUTINE gw
      70              : 
      71              : END MODULE gw_main
      72              :