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Degenerate Perturbation Theory in Quantum Mechanics [PDF]
Progress of Theoretical Physics, 1983 K. Suzuki, R. Okamoto
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Quantum mechanics in general quantum systems (II): Perturbation theory [PDF]
, 2006 We propose an improved scheme of perturbation theory based on our exact solution [An Min Wang, quant-ph/0611216] in general quantum systems independent of time. Our elementary start-point is to introduce the perturbing parameter as late as possible. Our main skills are Hamiltonian redivision so as to overcome a flaw of the usual perturbation theory ...
An Min Wang
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Results in Physics, 2017 The difficulty that the probabilities infinitely increase with time when the time is large enough in time-dependent perturbation theory for quantum systems with finite number of levels is treated by means of simply transforming the straightforward form ...
Q.H. Liu +4 more
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đť’«đť’Ż-Symmetric Quantum Mechanics Basics & Zeeman Effect
Reports in Advances of Physical Sciences, 2020 The non-Hermitian aspect of Quantum Mechanics has been of great interest recently. There have been numerous studies on non-Hermitian Hamiltonians written for natural processes.
Preet Sharma
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Near-resonances and detuning in classical and quantum mechanics
Mathematics in Engineering, 2023 From the point of view of perturbation theory, (perturbations of) near-resonant systems are plagued by small denominators. These do not affect (perturbations of) fully resonant systems; so it is in many ways convenient to approximate near resonant ...
G. Gaeta , G. Pucacco
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Dyson–Schwinger approach to pion–nucleon scattering using time-ordered perturbation theory
AIP Advances, 2021 We present a simple description of pion–nucleon (πN) scattering taking into account the full complexity of pion absorption and creation on the nucleon.
B. Blankleider +2 more
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Hamiltonian truncation in Anti-de Sitter spacetime
Journal of High Energy Physics, 2021 Quantum Field Theories (QFTs) in Anti-de Sitter (AdS) spacetime are often strongly coupled when the radius of AdS is large, and few methods are available to study them.
Matthijs Hogervorst +3 more
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Classical and Quantum Perturbation Theory for two Non--Resonant Oscillators with Quartic Interaction [PDF]
, 1998 We study the classical and quantum perturbation theory for two non--resonant oscillators coupled by a nonlinear quartic interaction. In particular we analyze the question of quantum corrections to the torus quantization of the classical perturbation ...
Salasnich, Luca
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Perturbation theory for quantum-mechanical observables [PDF]
Physical Review A, 2002 Submitted to Phys. Rev. A. 17 pages, 4 figures.
Franson, J. D., Donegan, Michelle M.
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Quantum-classical mechanics as an alternative to quantum mechanics in molecular and chemical physics
Heliyon, 2019 In quantum mechanics, the theory of quantum transitions is grounded on the convergence of a series of time-dependent perturbation theory. In nuclear and atomic physics, this series converges because the dynamics of quantum transitions (quantum jumps) are
Vladimir V. Egorov
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