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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
We present the first nucleon-nucleon potential at next-to-next-to-next-to-leading order (fourth order) of chiral perturbation… 
Review
2001
Review
2001
This article reviews the current status of lattice-dynamical calculations in crystals, using density-functional perturbation… 
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
1995
Highly Cited
1995
This paper presents a systematic treatment of the linear theory of scalar gravitational perturbations in the synchronous gauge… 
Highly Cited
1994
Highly Cited
1994
1. First-Order (Heitler-London) Exchange 2. Exchange-Induction Interaction 3. Exchange-Dispersion Interaction D. Convergence… 
Highly Cited
1994
Highly Cited
1994
We study the perturbation theory for three dimensional Chern--Simons quantum field theory on a general compact three manifold… 
Highly Cited
1993
Highly Cited
1993
A quasidegenerate perturbation theory based on multiconfigurational self‐consistent‐field (MCSCF) reference functions is derived… 
Highly Cited
1980
Highly Cited
1980
We propose to formulate the perturbative expausion for field theory starting from the Langevin equation which describes the…