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Solvable toy model of negative energetic elasticity.
Phys Rev E
September 2024
Department of Basic Science, University of Tokyo, 3-8-1 Komaba, Meguro-ku, Tokyo 153-0041, Japan.
Recent experiments have established negative energetic elasticity, the negative contribution of energy to the elastic modulus, as a universal property of polymer gels. To reveal the microscopic origin of this phenomenon, Shirai and Sakumichi investigated a polymer model on a cubic lattice with the energy effect from the solvent in finite-size calculations [Phys. Rev.
View Article and Find Full Text PDFDeciphering competing interactions of Kitaev-Heisenberg-Γ system in clusters: II. Dynamics of Majorana fermions.
J Phys Condens Matter
October 2024
Institute of Physics, Sachivalaya Marg, Bhubaneswar 751005, India.
Article Synopsis
- The text talks about studying something called Majorana fermions using a special model that includes different types of interactions.
- Researchers looked at small groups of particles to see how they behave under different conditions, especially when a magnetic field is applied.
- They found out that the way these particles move can help scientists understand limits in quantum physics better.
A plethora of novel solitary wave solutions related to van der Waals equation: a comparative study.
Sci Rep
September 2024
Department of Mathematics, Ghazni University, Ghazni, Afghanistan.
In this article, we explore exact solitary wave solutions to the van der Waals equation which is crucial for numerous applications involving a variety of physical occurrences. This system is used to define the behavior of real gases taking into consideration finite size of molecules and also has some applications in industry for granular materials. The model is studied under the effect of fractional derivatives by employing two different definitions: , and M-truncated.
View Article and Find Full Text PDFElectrostatic interactions between soft nanoparticles beyond the Derjaguin approximation: Effects of finite size of ions and charges, dielectric decrement and ion correlations.
J Colloid Interface Sci
January 2025
Université de Lorraine, CNRS, Laboratoire Interdisciplinaire des Environnements Continentaux (LIEC), UMR7360, 54000 Nancy, France. Electronic address:
Hypothesis: Electrostatic interactions between colloids are governed by the overlap of their electric double layers (EDLs) and the ionic screening of the structural charges distributed at their core surface and/or in their peripheral ion-permeable shell, relevant to soft particles like polymer colloids and microorganisms. Whereas ion size-mediated effects on the organization of isolated EDLs have been analysed, their contribution to the electrostatic energy of interacting soft particles has received less attention THEORY AND SIMULATIONS: Herein, we elaborate a formalism to evaluate the electrostatic interaction energy profile between spherical core/shell particles, building upon a recent Poisson-Boltzmann theory corrected for the sizes of ions and particle structural charges, for ion correlations and dielectric decrement. Interaction energy is derived from pairwise disjoining pressure and exact Surface Element Integration method, beyond the Derjaguin approximation.
View Article and Find Full Text PDFThe Staggered Mesh Method: Accurate Exact Exchange Toward the Thermodynamic Limit for Solids.
J Chem Theory Comput
August 2024
College of Chemistry, University of California, Berkeley, California 94720, United States.
In periodic systems, the Hartree-Fock (HF) exchange energy exhibits the slowest convergence of all HF energy components as the system size approaches the thermodynamic limit. We demonstrate that the recently proposed staggered mesh method for Fock exchange energy [Xing, Li, and Lin, Math. Comp.
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