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Volumn 81, Issue 4, 2010, Pages

Density-potential mapping in time-dependent density-functional theory

Author keywords

[No Author keywords available]

Indexed keywords

DINGER EQUATION; POTENTIAL MAPPING; QUANTUM MECHANICS; TIME DEPENDENT DENSITY FUNCTIONAL THEORY;

EID: 77951741059     PISSN: 10502947     EISSN: 10941622     Source Type: Journal    
DOI: 10.1103/PhysRevA.81.042525     Document Type: Article
Times cited : (29)

References (24)
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    • An alternative formulation is to replace the left-hand side of Eq. (5) with (1/m)•[nΨ(r,t) v(r,t)]. Subtracting Eqs. (3) and (5) then gives Δn (r,t)=0, where Δn(r,t)=nΨ(r,t)-naim(r,t). The given initial conditions Δn(r,0)=0, Δn (r,0)=0 then guarantee Δn(r,t)=0 for all t≥0. Existence and uniqueness of the solution, for [v(r,t),|Ψ(t)], to this modified formulation is then a necessary and sufficient condition for unique v-representability of the chosen target density naim(r,t). However, this formulation makes v(r,t), as defined by Eq. (5), a more complicated functional of |Ψ(t). The distinction between these two formulations is left for future work.
    • An alternative formulation is to replace the left-hand side of Eq. (5) with (1/m)•[nΨ(r,t) v(r,t)]. Subtracting Eqs. (3) and (5) then gives Δn (r,t)=0, where Δn(r,t)=nΨ(r,t)-naim(r,t). The given initial conditions Δn(r,0)=0, Δn (r,0)=0 then guarantee Δn(r,t)=0 for all t≥0. Existence and uniqueness of the solution, for [v(r,t),|Ψ(t)], to this modified formulation is then a necessary and sufficient condition for unique v-representability of the chosen target density naim(r,t). However, this formulation makes v(r,t), as defined by Eq. (5), a more complicated functional of |Ψ(t). The distinction between these two formulations is left for future work.
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    • Since Eq. (A2) is of second order, the complementary function in the general solution for w(r,t) contains a second term, in addition to φ 0(r,t). It, too, has been eliminated in the solution in Eq. (A6).
    • Since Eq. (A2) is of second order, the complementary function in the general solution for w (r, t) contains a second term, in addition to φ 0 (r, t). It, too, has been eliminated in the solution in Eq. (A6).


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