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Perturbation theory

Known as: Perturbation (mathematics), First-order non-singular perturbation theory, Higher order terms 
Perturbation theory comprises mathematical methods for finding an approximate solution to a problem, by starting from the exact solution of a related… 
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Papers overview

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Highly Cited
2006
Highly Cited
2006
The application of variational density functional perturbation theory (DFPT) to lattice dynamics and dielectric properties is… 
Highly Cited
2003
Highly Cited
2003
Introduction.- First-order adiabatic theory.- Space-adiabatic perturbation theory.- Applications and extensions.- Quantum… 
Highly Cited
2002
Highly Cited
2002
This article provides a pedagogical introduction to the basic concepts of chiral perturbation theory and is designed as a text… 
Highly Cited
2001
Highly Cited
2001
A modified SAFT equation of state is developed by applying the perturbation theory of Barker and Henderson to a hard-chain… 
Highly Cited
1999
Highly Cited
1999
Eventually, you will enormously discover a supplementary experience and execution by spending more cash. still when? reach you… 
Highly Cited
1994
Highly Cited
1994
1. First-Order (Heitler-London) Exchange 2. Exchange-Induction Interaction 3. Exchange-Dispersion Interaction D. Convergence… 
Highly Cited
1993
Highly Cited
1993
A quasidegenerate perturbation theory based on multiconfigurational self‐consistent‐field (MCSCF) reference functions is derived… 
Highly Cited
1990
Highly Cited
1990
Preliminaries. Norms and Metrics. Linear Systems and Least Squares Problems. The Perturbation of Eigenvalues. Invariant Subspaces… 
Highly Cited
1980
Highly Cited
1980
We propose to formulate the perturbative expausion for field theory starting from the Langevin equation which describes the… 
Highly Cited
1966
Highly Cited
1966
A new perturbation theory for solving the Vlasov equation is derived. The theory is especially designed to cope with time…