Results 161 to 170 of about 1,865,243 (219)

Generalized reaction-path Hamiltonian dynamics

Theoretical Chemistry Accounts: Theory, Computation, and Modeling (Theoretica Chimica Acta), 2004
The reaction-path Hamiltonian is reformulated in a form that is independent of the specific choice of guiding path. A necessary and sufficient condition for a given curve to satisfy reaction-path Hamiltonian requirements is derived, showing that any curve with no explicit dependence on the independent parameter does give rise to a formally acceptable ...
Javoer Gonz�lez, Xavier Gim�nez, Josep Maria Bofill   +2 more
openaire   +1 more source

Crossing-Free Acyclic Hamiltonian Path Completion for Planar st-Digraphs

International Symposium on Algorithms and Computation, 2009
In this paper we study the problem of existence of a crossing-free acyclic hamiltonian path completion (for short, HP-completion) set for embedded upward planar digraphs.
T. Mchedlidze, A. Symvonis
semanticscholar   +1 more source

A diabatic reaction path Hamiltonian

The Journal of Chemical Physics, 1988
A reaction path Hamiltonian is constructed that is based on a straight-line, least motion path that interpolates linearly between equilibrium reactant and product geometries of the molecular system. Conservation of linear and angular momentum are correctly accounted for.
William H. Miller, Beverly A. Ruf, Yan-Tyng Chang   +2 more
openaire   +1 more source

Path Integrals for Pseudo-Hermitian Hamiltonians

International Journal of Theoretical Physics, 2010
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
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Approximation algorithms for the k-depots Hamiltonian path problem

Optimization Letters, 2021
Yichen Yang, Zhaohui Liu, Wei Yu
semanticscholar   +1 more source

Hamiltonian Operators via Feynman Path Integrals

Journal of Mathematical Physics, 1970
It is shown that Kerner and Sutcliffe's derivation leading to a unique quantum mechanical Hamiltonian from its classical counterpart is indeed not unique. This is done by using the same method as Kerner and Sutcliffe to derive different quantum Hamiltonians from the same classical Hamiltonian.
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PATH INTEGRALS FOR QUASI-HERMITIAN HAMILTONIANS

International Journal of Modern Physics D, 2011
Inner products in quasi-Hermitian quantum theories, and hence probabilities, are defined through a metric that depends on the details of the Hamiltonians themselves. We shall see that the functional integral for quasi-Hermitian theories, and hence Feynman diagrams, for example, can be calculated without needing to evaluate the metric. The reason turns
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The Hamiltonian alternating path problem

2012
In this paper, we consider the Hamiltonian alternating path problem for graphs, multigraphs, and digraphs. We describe an approach to solve the problem. This approach is based on constructing logical models for the problem. We use logical models for the Hamiltonian alternating path problem to solve the Hamiltonian path problem and the planning a ...
Gorbenko, Anna, Popov, Vladimir
openaire   +2 more sources

Path Integrals and Hamiltonians

2014
Providing a pedagogical introduction to the essential principles of path integrals and Hamiltonians, this book describes cutting-edge quantum mathematical techniques applicable to a vast range of fields, from quantum mechanics, solid state physics, statistical mechanics, quantum field theory, and superstring theory to financial modeling, polymers ...
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Hamiltonian path in permutation graphs

Theoretical Computer Science
The Hamiltonian path problem is NP-complete for general graphs. The notion of a follow-up vertex in a permutation graph is introduced in this research, with respect to its Hasse diagram. A necessary and sufficient condition is justified for the existence of a Hamiltonian path in a permutation graph in terms of the existence of a follow-up vertex ...
Krishna Daripa, Alak Kumar Datta
openaire   +1 more source