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In this paper, we propose two approaches to apply boundary conditions for bond-based peridynamic models. There has been in recent years a renewed interest in the class of so-called non-local models, which include peridynamic models, for the…

Computational Engineering, Finance, and Science · Computer Science 2020-10-02 Serge Prudhomme , Patrick Diehl

The aim of this paper is to find the numerical solutions of the second order linear and nonlinear differential equations with Dirichlet, Neumann and Robin boundary conditions. We use the Bernoulli polynomials as linear combination to the…

Numerical Analysis · Computer Science 2023-05-31 Md. Shafiqul Islam , Afroza Shirin

We consider the Laplacian in a tubular neighbourhood of a hyperplane subjected to non-self-adjoint $\mathcal{PT}$-symmetric Robin boundary conditions. Its spectrum is found to be purely essential and real for constant boundary conditions.…

Mathematical Physics · Physics 2014-09-03 Radek Novak

We prove a Feynman-Kac formula for differential forms satisfying absolute boundary conditions on Riemannian manifolds with boundary and of bounded geometry. We use this to construct $L^2$ harmonic forms out of bounded ones on the universal…

Differential Geometry · Mathematics 2018-03-16 Levi Lopes de Lima

This paper deals with a parabolic-elliptic chemotaxis-consumption system with tensor-valued sensitivity $S(x,n,c)$ under no-flux boundary conditions for $n$ and Robin-type boundary conditions for $c$. The global existence of bounded…

Analysis of PDEs · Mathematics 2023-05-03 Jaewook Ahn , Kyungkeun Kang , Jihoon Lee

We analyze Einstein's vacuum field equations in generalized harmonic coordinates on a compact spatial domain with boundaries. We specify a class of boundary conditions which is constraint-preserving and sufficiently general to include…

General Relativity and Quantum Cosmology · Physics 2008-11-26 Milton Ruiz , Oliver Rinne , Olivier Sarbach

We develop a Coulomb gas formalism for boundary conformal field theory having a $W$ symmetry and illustrate its operation using the three state Potts model. We find that there are free-field representations for six $W$ conserving boundary…

High Energy Physics - Theory · Physics 2009-11-10 Alexandre F. Caldeira , Shinsuke Kawai , John F. Wheater

We provide a framework to build periodic boundary conditions on the pseudosphere (or hyperbolic plane), the infinite two-dimensional Riemannian space of constant negative curvature. Starting from the common case of periodic boundary…

Statistical Mechanics · Physics 2008-11-26 François Sausset , Gilles Tarjus

Inhomogeneous essential boundary conditions can be appended to a well-posed PDE to lead to a combined variational formulation. The domain of the corresponding operator is a Sobolev space on the domain $\Omega$ on which the PDE is posed,…

Numerical Analysis · Mathematics 2023-07-11 Rob Stevenson

We introduce new $U_q\mathfrak{sl}_2$-invariant boundary conditions for the open XXZ spin chain. For generic values of $q$ we couple the bulk Hamiltonian to an infinite-dimensional Verma module on one or both boundaries of the spin chain,…

High Energy Physics - Theory · Physics 2022-11-29 Dmitry Chernyak , Azat M. Gainutdinov , Hubert Saleur

The paper is devoted to the study of some properties of the first eigenvalue of the anisotropic $p$-Laplace operator with Robin boundary condition involving a function $\beta$ which in general is not constant. In particular we obtain sharp…

Analysis of PDEs · Mathematics 2018-03-28 Nunzia Gavitone , Leonardo Trani

The paper is concerned with the Bari basis property of a boundary value problem associated in $L^2([0,1]; \mathbb{C}^2)$ with the following $2 \times 2$ Dirac-type equation for $y = {\rm col}(y_1, y_2)$: $$L_U(Q) y =-i B^{-1} y' + Q(x) y =…

Spectral Theory · Mathematics 2022-02-24 Anton A. Lunyov

We solve for the spectrum of the Laplacian as a Hamiltonian on $\mathbb{R}^{2}-\mathbb{D}$ and in $\mathbb{R}^{3}-\mathbb{B}$. A self-adjointness analysis with $\partial\mathbb{D}$ and $\partial\mathbb{B}$ as the boundary for the two cases…

General Relativity and Quantum Cosmology · Physics 2013-05-29 T. R. Govindarajan , Rakesh Tibrewala

We consider the W-extended logarithmic minimal model WLM(p,p'). As in the rational minimal models, the so-called fundamental fusion algebra of WLM(p,p') is described by a simple graph fusion algebra. The fusion matrices in the regular…

High Energy Physics - Theory · Physics 2010-05-07 Jorgen Rasmussen

We consider the dunking problem: a solid body at uniform temperature $T_\text{i}$ is placed in a environment characterized by farfield temperature $T_\infty$ and time-independent spatially uniform heat transfer coefficient; we permit…

Numerical Analysis · Mathematics 2024-12-24 Kento Kaneko , Claude Le Bris , Anthony T. Patera

The one matrix model is known to reproduce in the continuum limit the (2,2p+1) minimal Liouville gravity. Recently, two of the authors have shown how to construct arbitrary critical boundary conditions within this matrix model. So far,…

High Energy Physics - Theory · Physics 2011-03-28 Jean-Emile Bourgine , Goro Ishiki , Chaiho Rim

This work is concerned with boundary conditions for one-dimensional hyperbolic relaxation systems with characteristic boundaries. We assume that the relaxation system satisfies the structural stability condition proposed by the second…

Analysis of PDEs · Mathematics 2020-10-15 Yizhou Zhou , Wen-An Yong

We consider a boundary value problem for a general second order linear equation in a domain with a fine perforation. The latter is made by small cavities; both the shapes of the cavities and their distribution are arbitrary. The boundaries…

Analysis of PDEs · Mathematics 2022-08-24 Denis I. Borisov

A natural construction of the logarithmic extension of the M(2,p) minimal models is presented, which generalises our previous model [0708.0802] of percolation (p=3). Its key aspect is the replacement of the minimal model irreducible modules…

High Energy Physics - Theory · Physics 2008-11-26 Pierre Mathieu , David Ridout

The Virasoro minimal models with boundary are described in the Landau-Ginzburg theory by introducing a boundary potential, function of the boundary field value. The ground state field configurations become non-trivial and are found to obey…

High Energy Physics - Theory · Physics 2009-11-10 A. Cappelli , G. D'Appollonio , M. Zabzine