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mirror of https://github.com/pfloos/quack synced 2024-11-06 22:24:03 +01:00

BCCD start

This commit is contained in:
Pierre-Francois Loos 2021-01-05 15:51:52 +01:00
parent e0a28f71bd
commit e793ceaeca
5 changed files with 235 additions and 8 deletions

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@ -1,11 +1,11 @@
# RHF UHF KS MOM # RHF UHF KS MOM
F T F F T F F F
# MP2* MP3 MP2-F12 # MP2* MP3 MP2-F12
F F F F F F
# CCD DCD CCSD CCSD(T) # CCD DCD CCSD CCSD(T)
F F F F F F F F
# drCCD rCCD lCCD pCCD # drCCD rCCD lCCD pCCD
F F F F F F F T
# CIS* CIS(D) CID CISD # CIS* CIS(D) CID CISD
F F F F F F F F
# RPA* RPAx* ppRPA # RPA* RPAx* ppRPA
@ -13,7 +13,7 @@
# G0F2 evGF2 G0F3 evGF3 # G0F2 evGF2 G0F3 evGF3
F F F F F F F F
# G0W0* evGW* qsGW* # G0W0* evGW* qsGW*
F F T F F F
# G0T0 evGT qsGT # G0T0 evGT qsGT
F F F F F F
# MCMP2 # MCMP2

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@ -1,4 +1,4 @@
2 2
H 0.0 0.0 0.0 H 0.0 0.0 0.0
H 0.0 0.0 1.0 H 0.0 0.0 0.740848

231
src/CC/BCCD.f90 Normal file
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@ -0,0 +1,231 @@
subroutine BCCD(maxSCF,thresh,max_diis,nBasin,nCin,nOin,nVin,nRin,ERI,ENuc,ERHF,eHF)
! Brueckner CCD module
implicit none
! Input variables
integer,intent(in) :: maxSCF
integer,intent(in) :: max_diis
double precision,intent(in) :: thresh
integer,intent(in) :: nBasin
integer,intent(in) :: nCin
integer,intent(in) :: nOin
integer,intent(in) :: nVin
integer,intent(in) :: nRin
double precision,intent(in) :: ENuc,ERHF
double precision,intent(in) :: eHF(nBasin)
double precision,intent(in) :: ERI(nBasin,nBasin,nBasin,nBasin)
! Local variables
integer :: nBas
integer :: nC
integer :: nO
integer :: nV
integer :: nR
integer :: nSCF
double precision :: Conv
double precision :: EcMP2,EcMP3,EcMP4
double precision :: ECCD,EcCCD
double precision,allocatable :: seHF(:)
double precision,allocatable :: sERI(:,:,:,:)
double precision,allocatable :: dbERI(:,:,:,:)
double precision,allocatable :: eO(:)
double precision,allocatable :: eV(:)
double precision,allocatable :: delta_OOVV(:,:,:,:)
double precision,allocatable :: OOOO(:,:,:,:)
double precision,allocatable :: OOVV(:,:,:,:)
double precision,allocatable :: OVOV(:,:,:,:)
double precision,allocatable :: VVVV(:,:,:,:)
double precision,allocatable :: X1(:,:,:,:)
double precision,allocatable :: X2(:,:)
double precision,allocatable :: X3(:,:)
double precision,allocatable :: X4(:,:,:,:)
double precision,allocatable :: u(:,:,:,:)
double precision,allocatable :: v(:,:,:,:)
double precision,allocatable :: r2(:,:,:,:)
double precision,allocatable :: t2(:,:,:,:)
integer :: n_diis,i,j,a,b
double precision :: rcond
double precision,allocatable :: error_diis(:,:)
double precision,allocatable :: t_diis(:,:)
! Hello world
write(*,*)
write(*,*)'**************************************'
write(*,*)'| BCCD calculation |'
write(*,*)'**************************************'
write(*,*)
! Spatial to spin orbitals
nBas = 2*nBasin
nC = 2*nCin
nO = 2*nOin
nV = 2*nVin
nR = 2*nRin
allocate(seHF(nBas),sERI(nBas,nBas,nBas,nBas))
call spatial_to_spin_MO_energy(nBasin,eHF,nBas,seHF)
call spatial_to_spin_ERI(nBasin,ERI,nBas,sERI)
! Antysymmetrize ERIs
allocate(dbERI(nBas,nBas,nBas,nBas))
call antisymmetrize_ERI(2,nBas,sERI,dbERI)
deallocate(sERI)
! Form energy denominator
allocate(eO(nO-nC),eV(nV-nR))
allocate(delta_OOVV(nO-nC,nO-nC,nV-nR,nV-nR))
eO(:) = seHF(nC+1:nO)
eV(:) = seHF(nO+1:nBas-nR)
call form_delta_OOVV(nC,nO,nV,nR,eO,eV,delta_OOVV)
deallocate(seHF)
! Create integral batches
allocate(OOOO(nO-nC,nO-nC,nO-nC,nO-nC),OOVV(nO-nC,nO-nC,nV-nR,nV-nR), &
OVOV(nO-nC,nV-nR,nO-nC,nV-nR),VVVV(nV-nR,nV-nR,nV-nR,nV-nR))
OOOO(:,:,:,:) = dbERI(nC+1:nO ,nC+1:nO ,nC+1:nO ,nC+1:nO )
OOVV(:,:,:,:) = dbERI(nC+1:nO ,nC+1:nO ,nO+1:nBas-nR,nO+1:nBas-nR)
OVOV(:,:,:,:) = dbERI(nC+1:nO ,nO+1:nBas-nR,nC+1:nO ,nO+1:nBas-nR)
VVVV(:,:,:,:) = dbERI(nO+1:nBas-nR,nO+1:nBas-nR,nO+1:nBas-nR,nO+1:nBas-nR)
deallocate(dbERI)
! MP2 guess amplitudes
allocate(t2(nO-nC,nO-nC,nV-nR,nV-nR))
t2(:,:,:,:) = -OOVV(:,:,:,:)/delta_OOVV(:,:,:,:)
call CCD_correlation_energy(nC,nO,nV,nR,OOVV,t2,EcMP2)
EcMP4 = 0d0
! Memory allocation for DIIS
allocate(error_diis((nO-nR)**2*(nV-nR)**2,max_diis),t_diis((nO-nR)**2*(nV-nR)**2,max_diis))
! Initialization
allocate(r2(nO-nC,nO-nC,nV-nR,nV-nR),u(nO-nC,nO-nC,nV-nR,nV-nR),v(nO-nC,nO-nC,nV-nR,nV-nR))
allocate(X1(nO-nC,nO-nC,nO-nC,nO-nC),X2(nV-nR,nV-nR),X3(nO-nC,nO-nC),X4(nO-nC,nO-nC,nV-nR,nV-nR))
Conv = 1d0
nSCF = 0
n_diis = 0
t_diis(:,:) = 0d0
error_diis(:,:) = 0d0
!------------------------------------------------------------------------
! Main SCF loop
!------------------------------------------------------------------------
write(*,*)
write(*,*)'----------------------------------------------------'
write(*,*)'| BCCD calculation |'
write(*,*)'----------------------------------------------------'
write(*,'(1X,A1,1X,A3,1X,A1,1X,A16,1X,A1,1X,A10,1X,A1,1X,A10,1X,A1,1X)') &
'|','#','|','E(BCCD)','|','Ec(BCCD)','|','Conv','|'
write(*,*)'----------------------------------------------------'
do while(Conv > thresh .and. nSCF < maxSCF)
! Increment
nSCF = nSCF + 1
! Form linear array
call form_u(nC,nO,nV,nR,OOOO,VVVV,OVOV,t2,u)
! Form interemediate arrays
call form_X(nC,nO,nV,nR,OOVV,t2,X1,X2,X3,X4)
! Form quadratic array
call form_v(nC,nO,nV,nR,X1,X2,X3,X4,t2,v)
! Compute residual
r2(:,:,:,:) = OOVV(:,:,:,:) + delta_OOVV(:,:,:,:)*t2(:,:,:,:) + u(:,:,:,:) + v(:,:,:,:)
! Check convergence
Conv = maxval(abs(r2(:,:,:,:)))
! Update amplitudes
t2(:,:,:,:) = t2(:,:,:,:) - r2(:,:,:,:)/delta_OOVV(:,:,:,:)
! Compute correlation energy
call CCD_correlation_energy(nC,nO,nV,nR,OOVV,t2,EcCCD)
if(nSCF == 1) call MP3_correlation_energy(nC,nO,nV,nR,OOVV,t2,v,delta_OOVV,EcMP3)
! Dump results
ECCD = ERHF + EcCCD
! DIIS extrapolation
n_diis = min(n_diis+1,max_diis)
call DIIS_extrapolation(rcond,(nO-nC)**2*(nV-nR)**2,(nO-nC)**2*(nV-nR)**2,n_diis,error_diis,t_diis,-r2/delta_OOVV,t2)
! Reset DIIS if required
if(abs(rcond) < 1d-15) n_diis = 0
write(*,'(1X,A1,1X,I3,1X,A1,1X,F16.10,1X,A1,1X,F10.6,1X,A1,1X,F10.6,1X,A1,1X)') &
'|',nSCF,'|',ECCD+ENuc,'|',EcCCD,'|',Conv,'|'
enddo
write(*,*)'----------------------------------------------------'
!------------------------------------------------------------------------
! End of SCF loop
!------------------------------------------------------------------------
! Did it actually converge?
if(nSCF == maxSCF) then
write(*,*)
write(*,*)'!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!'
write(*,*)' Convergence failed '
write(*,*)'!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!'
write(*,*)
stop
endif
! Moller-Plesset energies
write(*,*)
write(*,'(1X,A15,1X,F10.6)') 'Ec(MP2) = ',EcMP2
write(*,'(1X,A15,1X,F10.6)') 'Ec(MP3) = ',EcMP3
write(*,'(1X,A15,1X,F10.6)') 'Ec(MP4-SDQ) = ',EcMP4
write(*,*)
end subroutine BCCD

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@ -97,7 +97,6 @@ subroutine pCCD(maxSCF,thresh,max_diis,nBas,nC,nO,nV,nR,ERI,ENuc,ERHF,eHF)
EcCCD = EcCCD + OOVV(i,a)*t(i,a) EcCCD = EcCCD + OOVV(i,a)*t(i,a)
end do end do
end do end do
print*,'Ec = ',EcCCD
! Memory allocation for DIIS ! Memory allocation for DIIS

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@ -79,9 +79,6 @@ subroutine G0T0(doACFDT,exchange_kernel,doXBS,BSE,TDA_W,TDA,dBSE,dTDA,evDyn,sing
nOOs = nO*nO nOOs = nO*nO
nVVs = nV*nV nVVs = nV*nV
! nOOs = nO*(nO + 1)/2
! nVVs = nV*(nV + 1)/2
nOOt = nO*(nO - 1)/2 nOOt = nO*(nO - 1)/2
nVVt = nV*(nV - 1)/2 nVVt = nV*(nV - 1)/2