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exercises:common:chg

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exercises:common:chg [2022/10/31 17:35] jglanexercises:common:chg [2023/12/04 13:49] (current) fnunes
Line 12: Line 12:
 cubecruncher.x -i AB.cube   -subtract A.cube -o AB_A.cube cubecruncher.x -i AB.cube   -subtract A.cube -o AB_A.cube
 cubecruncher.x -i AB_A.cube -subtract B.cube -o chg_dif.cube cubecruncher.x -i AB_A.cube -subtract B.cube -o chg_dif.cube
 +</code>
  
 +This type of analysis is also useful in the case of time-dependent calculations. In this case, the difference would be taken over time, with respect to some reference snapshot (e.g. ground state). 
 +
 +Δρ(tt0)=ρ(t)ρ(t0),
 +
 +where ρ(t) is the electron density at time t, and ρ(t0) is the reference electron density.
 +
 +<code>
 +cubecruncher.x -i elec_dens_t.cube -subtract elec_dens_t0.cube -o diff_t-t0.cube
 </code> </code>
exercises/common/chg.1667237710.txt.gz · Last modified: 2022/10/31 17:35 by jglan