Results 81 to 90 of about 1,518 (208)

A sharp form of the Virial theorem [PDF]

open access: yesBulletin of the American Mathematical Society, 1964
The virial theorem (for Newtonian gravitation) is usually proved with the assumption that the system is bounded. Here it is pointed out that this is a sufficient condition but not a necessary one and it is proved that a necessary and sufficient one is that the greatest distance between any two particles should be \(o(t)\) as \(t\to\infty\).
openaire   +3 more sources

The Role of Counterion Size in Defining Star‐Shaped Polyelectrolytes Thermodynamics, Conformations, and Ion Dynamics

open access: yesJournal of Polymer Science, Volume 63, Issue 15, Page 3005-3022, 1 August 2025.
ABSTRACT In this work, we systematically investigate the impact of counterion size on the behavior of star‐shaped strong polyelectrolytes in dilute aqueous solutions using Langevin simulations and a primitive model of electrolytes. Varying both the counterion diameter and the number of arms of the polyelectrolyte, we demonstrate that both ...
Andrea Tagliabue, Massimo Mella
wiley   +1 more source

High‐Performance Epothilone‐Based Microtubule Stabilizers as Anticancer Agents: Insights from DFT/QTAIM/MD Computational Modeling

open access: yesChemistrySelect, Volume 10, Issue 30, August 8, 2025.
Supramolecular contacts responsible for the mechanism of action of epothilone A chemotherapeutic drug in the taxane pocket of the β‐tubulin are addressed, combining quantum theory of atoms in molecules with density functional theory. We also derive the conformational shaping and the electronic eigenstates involved in photopharmacology experiments of ...
Costantino Zazza   +3 more
wiley   +1 more source

Numerical variational solution of hydrogen molecule and ions using one-dimensional hydrogen as basis functions

open access: yesNew Journal of Physics, 2020
The ground state solution of hydrogen molecule and ions are numerically obtained as an application of our scheme to solve many-electron multi-center potential Schrödinger equation by using one-dimensional hydrogen wavefunctions as basis functions.
Yanoar Pribadi Sarwono   +2 more
doaj   +1 more source

XV. On a theorem analogous to the virial theorem [PDF]

open access: yesThe London, Edinburgh, and Dublin Philosophical Magazine and Journal of Science, 1900
(1900). XV. On a theorem analogous to the virial theorem. The London, Edinburgh, and Dublin Philosophical Magazine and Journal of Science: Vol. 50, No. 303, pp. 210-213.
openaire   +1 more source

Molecular Simulations of Fluid Interfaces

open access: yesWIREs Computational Molecular Science, Volume 15, Issue 4, July/August 2025.
Left: A molecular simulation snapshot of a fluid–fluid interface. Right: The equations and neural network diagram indicate that interactions in such molecular systems can be modeled using quantum Hamiltonians, classical force fields, or neural network potentials.
Chung Chi Chio   +3 more
wiley   +1 more source

On the Virial Theorem for Interstellar Medium [PDF]

open access: yes, 2007
An attempt has been made to derive a version of the virial integral that would describe average properties of the interstellar medium (ISM). It is suggested to eliminate the (large) contribution of stellar matter by introducing 'exclusion zones ...
Ryutov, D.
core  

A Modification Of Koopmans' Theorem By Imposition Of The Virial Theorem In Molecules

open access: yes, 2015
Imposition of the virial theorem on Koopmans' theorem permits the introduction of some relaxation effect in the electronic cloud of atomic (less than 5%) or molecular (less than 1.3% for the systems studied) systems and a partitioning of the ionization ...
Takahata Y., Custodio R.
core   +1 more source

Modified virial theorem for highly magnetized white dwarfs

open access: yes, 2020
Generally the virial theorem provides a relation between various components of energy integrated over a system. This helps us to understand the underlying equilibrium. Based on the virial theorem we can estimate, for example, the maximum allowed magnetic

core   +1 more source

Pekar bipolaron and the virial theorem (arbitrary coupling)

open access: yes, 2014
The work is devoted to issues related with implementation of the virial theorem for one-center bipolaron. The virial theorem expressions have been obtained for an electron system with Coulomb interactions in the phonon field.
Kashirina, N.I.
core   +1 more source

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