Results 141 to 150 of about 748,632 (287)
Journal of Computational Chemistry, Volume 44, Issue 3, Page 367-380, January 30, 2023., 2023 Exchange interactions in polynuclear Fe (III) compounds are derived from ab initio calculations based on a single spin‐flip (1SF) approach. Abstract Low‐energy spectra of single‐molecule magnets (SMMs) are often described by Heisenberg Hamiltonians.
Saikiran Kotaru +3 more
wiley +1 more source
C1 non-integrability of a hydrogen atom in a circularly polarized microwave field
Open Physics, 2012 Guirao Juan, López Miguel, Vera Juan
doaj +1 more source
Non-homogeneous BVPs for second-order symmetric Hamiltonian systems
Open MathematicsBy making use of Bolle’s method, we show that the following problem has infinitely many solutions: x¨+V′(x)=0,x(0)cosα−x˙(0)sinα=x0,x(1)cosβ−x˙(1)sinβ=x1,\begin{array}{rcl}\ddot{x}+{V}^{^{\prime} }\left(x)& =& 0,\\ x\left(0)\cos \alpha -\dot{x}\left(0 ...
Chen Yingying, Dong Yujun, Wang Baiqian
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Axion‐Like Interactions and CFT in Topological Matter, Anomaly Sum Rules and the Faraday Effect
Advanced Physics Research, EarlyView.This review investigates the connection between chiral anomalies and their manifestation in topological materials, using both perturbative methods based on ordinary quantum field theory and conformal field theory (CFT). It emphasizes the role of CFT in momentum space for parity‐odd correlation functions, and their reconstruction by the inclusion of a ...
Claudio Corianò +4 more
wiley +1 more source
Journal of Computational Chemistry, Volume 44, Issue 4, Page 534-545, February 5, 2023., 2023 A list of the combinations of replicas and temperatures is required when performing replica permutation. We found a problem that state transitions to the neighboring states do not change the temperature for replicas with large replica indices frequently in a sequentially assigned list.
Daiki Fukuhara +3 more
wiley +1 more source
Ising critical behavior of a non-Hamiltonian lattice system [PDF]
, 1994 Joaquín Marro +3 more
openalex +1 more source
Path Integral Spin Dynamics for Quantum Paramagnets
Advanced Physics Research, EarlyView.The study has developed a path integral method, which is a classical approach, combined with atomistic spin dynamics simulations to calculate thermal quantum expectation values. This method can handle Hamiltonians with non‐linear terms, which are important for describing uniaxial anisotropies and mechanical constraints.
Thomas Nussle +2 more
wiley +1 more source
FCclasses3: Vibrationally‐resolved spectra simulated at the edge of the harmonic approximation
Journal of Computational Chemistry, Volume 44, Issue 4, Page 626-643, February 5, 2023., 2023 FCclasses3 is a code to simulate vibronic spectra and nonradiative rates based on the harmonic approximation, supporting a wide range of spectroscopies. It makes freely available to the community the developments carried out in our group in the last 10 years, including time‐dependent formulations in internal coordinates, which brings us to the limits ...
Javier Cerezo, Fabrizio Santoro
wiley +1 more source
Disturbation to Lie symmetry for constrained Hamiltonian system within Agrawal’s operators
AIP AdvancesLie theorem for a constrained Hamiltonian system under Agrawal’s operators is studied and proved. First, two fractional singular systems are listed.
Shi-Lei Shen, Chuan-Jing Song
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The second Birkhoff theorem for optical Hamiltonian systems [PDF]
, 1991 Leonid Polterovich
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