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    EnablePhotons 
    
    
    
    
EnablePhotons 
Section  Hamiltonian  
Type  logical 
Default  no 
 
This variable can be used to enable photons in several types of calculations.
It can be used to activate the one-photon OEP formalism.
In the case of CalculationMode = casida, it enables photon modes as
described in ACS Photonics 2019, 6, 11, 2757-2778.
Finally, if set to yes when solving the ferquency-dependent Sternheimer
equation, the photons are coupled to the electronic subsystem.
 
    
         
        
        
        
        Source information
        
         
    
    
electrons/xc_oep.F90  : 165
 call  parse_variable ( namespace ,  'EnablePhotons' ,  . false .,  oep % has_photons )