Search results

Search:
in the keywords: quantum calculations

Sort By:

Limit search:

Effects of quantum vacuum fluctuations of the electric field on DNA condensation

100%

Iorio A., Sen S., Sen S.

Open Physics

2011

vol. 9

issue 1

157-166

By assuming that not only counter-ions but DNA molecules as well are thermally distributed according to a Boltzmann law, we propose a modified Poisson-Boltzmann equation, at the classical level, as a starting point to compute the effects of quantum fluctuations of the electric field on the interaction among DNA-cation complexes. The latter are modeled here as infinite one-dimensional wires (δ-functions). Our goal is to single out such quantum-vacuum-driven interaction from the counterion-induced and water-related interactions. We obtain a universal, frustration-free Casimir-like (codimension 2) interaction that extensive numerical analysis show to be a good candidate to explain the formation and stability of DNA aggregates. Such Casimir energy is computed for a variety of configurations of up to 19 DNA strands in a hexagonal array. It is found to be many-body.

The POCOBIO Database for Computed Scattering Cross-Sections for Positron Collisions with Biomolecular Systems

100%

Franz J.

Acta Physica Polonica A

2017

vol. 132

issue 5

1478-1481

The design of a database for positron interactions with biomolecular systems is outlined. The database contains only scattering cross-sections, which are derived from theory. The data model is defined in a very flexible way, which facilitates the usage of weakly bound clusters of molecules and molecular systems with many tautomeric forms.

Refine search results

1 Acta Physica Polonica A

1 Open Physics

1 2017

1 2011

1 Franz J.

1 Iorio A.

1 Sen S.

Search results

Effects of quantum vacuum fluctuations of the electric field on DNA condensation

The POCOBIO Database for Computed Scattering Cross-Sections for Positron Collisions with Biomolecular Systems