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We present a phase-field approximation of sharp-interface energies defined on partitions, designed for modeling grain boundaries in polycrystals. The independent variable takes values in the orthogonal group $\mathrm{O}(d)$ modulo a lattice…

泛函分析 · 数学 2026-01-13 Sergio Conti , Vito Crismale , Adriana Garroni , Annalisa Malusa

A double hybrid approximation using the Coulomb-attenuating method (CAM-DH) is derived within range-separated density-functional perturbation theory, in the spirit of a recent work by Cornaton {\it et al.} [Phys. Rev. A 88, 022516 (2013)].…

化学物理 · 物理学 2014-04-21 Yann Cornaton , Emmanuel Fromager

We study microstructure formation in two nonconvex singularly-perturbed variational problems from materials science, one modeling austenite-martensite interfaces in shape-memory alloys, the other one slip structures in the plastic…

偏微分方程分析 · 数学 2018-05-01 Sergio Conti , Barbara Zwicknagl

We consider the minimization of an energy functional given by the sum of a density perimeter and a nonlocal interaction of Riesz type with exponent $\alpha$, under volume constraint, where the strength of the nonlocal interaction is…

偏微分方程分析 · 数学 2020-10-16 Stan Alama , Lia Bronsard , Ihsan Topaloglu , Andres Zuniga

We consider fractional quantum Hall states built on Laughlin's original N-body wave-functions, i.e., they are of the form holomorphic times gaussian and vanish when two particles come close, with a given polynomial rate. Such states appear…

数学物理 · 物理学 2016-01-06 Nicolas Rougerie , Jakob Yngvason

We consider the surface pressure of a colloid-laden liquid interface. As micron-sized particles of suitable wettability can be irreversibly bound to the liquid interface on experimental timescales, we use the canonical ensemble to derive an…

软凝聚态物质 · 物理学 2022-03-07 R. Mears , I. Muntz , J. H. J. Thijssen

We utilize an effective field theory approach to calculate Casimir interactions between objects bound to thermally fluctuating fluid surfaces or interfaces. This approach circumvents the complicated constraints imposed by such objects on…

软凝聚态物质 · 物理学 2015-05-19 Cem Yolcu , Ira Z. Rothstein , Markus Deserno

The energy-spectrum of two point-like particles interacting in a 3-D isotropic Harmonic Oscillator (H.O.) trap is related to the free scattering phase-shifts $\delta$ of the particles by a formula first published by Busch et al. It is here…

核理论 · 物理学 2016-01-20 H. S. Köhler

In this paper, the authors study the limit of a sharp interface model for the solvation of charged molecules in an implicit solvent as the number of solute molecules and the size of the surrounding box tend to infinity. The energy is given…

偏微分方程分析 · 数学 2018-06-14 Janusz Ginster , Peter Gladbach

We study a phase-field variational model for the solvaiton of charged molecules with an implicit solvent. The solvation free-energy functional of all phase fields consists of the surface energy, solute excluded volume and solute-solvent van…

偏微分方程分析 · 数学 2022-11-01 Shibin Dai , Bo Li , Jianfeng Lu

We study the d-dimensional Cahn-Hilliard equation on the flat torus in a parameter regime in which the system size is large and the mean value is close---but not too close---to -1. We are particularly interested in a quantitative…

偏微分方程分析 · 数学 2014-12-24 Michael Gelantalis , Maria G. Westdickenberg

This paper addresses the asymptotic development of order 2 by the $\Gamma$ -convergence of the Cahn-Hilliard functional with Dirichlet boundary conditions. The Dirichlet data are assumed to be well separated from one of the two wells. In…

偏微分方程分析 · 数学 2025-08-18 Irene Fonseca , Leonard Kreutz , Giovanni Leoni

This paper concerns the construction and analysis of a numerical scheme for a mixed discrete-continuous fragmentation equation. A finite volume scheme is developed, based on a conservative formulation of a truncated version of the…

数值分析 · 数学 2019-02-06 Graham Baird , Endre Süli

This paper considers efficient spectral solutions for weakly singular nonlocal diffusion equations with Dirichlet-type volume constraints. The equation we consider contains an integral operator that typically has a singularity at the…

数值分析 · 数学 2022-07-28 Jiashu Lu , Mengna Yang , Yufeng Nie

Degenerate Cahn-Hilliard phase-field models provide a robust approximation of surface-diffusion-driven interface motion without explicit front tracking. In computations, however, the geometric volume enclosed by the interface -- the region…

数值分析 · 数学 2026-02-03 Josef Musil

Recently, we introduced (e-print arXiv:1407.7128) {\em local reduced density matrix functional theory} (local RDMFT), a theoretical scheme capable of incorporating static correlation effects in Kohn-Sham equations. Here, we apply local…

化学物理 · 物理学 2014-11-07 Nektarios N. Lathiotakis , Nicole Helbig , Angel Rubio , Nikitas I. Gidopoulos

Partially coherent quantum-entangled beams combine quantum entanglement with partial coherence, allowing them to maintain quantum characteristics while being more resistant to distortions caused by random media during propagation. In this…

量子物理 · 物理学 2025-03-04 Sakshi Rao , Bhaskar Kanseri

We consider a diffuse interface model that describes the macro- and micro-phase separation processes of a polymer mixture. The resulting system consists of a Cahn-Hilliard equation and a Cahn-Hilliard-Oono type equation endowed with the…

偏微分方程分析 · 数学 2024-05-01 Bohan Ouyang

In this work we give a comprehensive derivation of an exact and numerically feasible method to perform ab-initio calculations of quantum particles interacting with a quantized electromagnetic field. We present a hierachy of…

This paper addresses the asymptotic development of order 2 by Gamma convergence of the Cahn-Hillard functional with Dirichlet boundary conditions, where the potential has subquadratic growth near the wells.

偏微分方程分析 · 数学 2025-10-20 Francesco Colasanto , Pascal Steinke