Results 41 to 50 of about 2,670,928 (182)
Integrable Boundary Conditions and Reflection Matrices for the O(N) Nonlinear Sigma Model [PDF]
, 2001 We find new integrable boundary conditions, depending on a free parameter $g$, for the O(N) nonlinear $\sigma$ model, which are of nondiagonal type, that is, particles can change their ``flavor'' through scattering off the boundary.
Abad +20 more
core +5 more sources
Multiple solutions for semilinear elliptic equations with nonlinear boundary conditions
Electronic Journal of Differential Equations, 2012 We consider the elliptic problem with nonlinear boundary conditions: $$displaylines{ -Delta u +bu=f(x,u)quadhbox{in }Omega,cr -partial_{u}u=|u|^{q-1}u-g(u)quadhbox{on }partialOmega, }$$ where $Omega$ is a bounded domain in $mathbb{R}^n$.
Junichi Harada, Mitsuharu Otani
doaj
Symmetry breaking boundaries II. More structures; examples [PDF]
, 1999 Various structural properties of the space of symmetry breaking boundary conditions that preserve an orbifold subalgebra are established. To each such boundary condition we associate its automorphism type.
Fuchs, J., Schweigert, C.
core +2 more sources
MathematicsSufficient conditions are obtained for a signed maximum principle for boundary value problems for Riemann–Liouville fractional differential equations with analogues of Neumann or periodic boundary conditions in neighborhoods of simple eigenvalues.
Paul W. Eloe +2 more
doaj +1 more source
Boundary conditions for quadrupolar metamaterials
New Journal of Physics, 2014 One of the long-standing problems in effective medium theories is using the knowledge of the bulk material response to predict the behavior of the electromagnetic fields at the material boundaries.
Mário G Silveirinha
doaj +1 more source
Supergravity at the boundary of AdS supergravity
, 2009 We give a general analysis of AdS boundary conditions for spin-3/2 Rarita-Schwinger fields and investigate boundary conditions preserving supersymmetry for a graviton multiplet in AdS_4.
Aaron J. Amsel +5 more
core +1 more source
MathematicsSeismic wave propagation in complex terrains, especially in the presence of air layers, plays a crucial role in accurate subsurface imaging. However, the influence of different boundary conditions on seismic wave propagation characteristics has not been ...
Ying Zhang +3 more
doaj +1 more source
Phase separation in the six-vertex model with a variety of boundary conditions
, 2018 We present numerical results for the six-vertex model with a variety of boundary conditions. Adapting an algorithm proposed by Allison and Reshetikhin for domain wall boundary conditions, we examine some modifications of these boundary conditions.
Korepin, Vladimir +3 more
core +1 more source
Existence of solutions to Sturm–Liouville boundary value problems
Electronic Journal of Qualitative Theory of Differential EquationsWe study the solvability of Sturm–Liouville boundary value problems for $x''=f(t,x,x'), t\in(0,1)$. The nonlinearity can be defined on a bounded set and is required to be continuous on its subset.
Gabriela Mihaylova, Petio Kelevedjiev
doaj +1 more source
Conjugate boundary value problems with functional boundary conditions at resonance
Boundary Value Problems, 2019 By constructing a suitable projection scheme and using the coincidence degree theory of Mawhin, we study the existence of solutions for conjugate boundary value problems with functional boundary conditions at resonance with dimKerL=1 $\operatorname{dim ...
Weihua Jiang, Jing Qiu, Bingzhi Sun
doaj +1 more source