Nonlinear effects in many-body van der Waals interactions
- URL: http://arxiv.org/abs/2307.13607v1
- Date: Fri, 23 Jun 2023 14:29:42 GMT
- Title: Nonlinear effects in many-body van der Waals interactions
- Authors: Dai-Nam Le, Pablo Rodriguez-Lopez, Lilia M. Woods
- Abstract summary: We present a $textitDiscrete Coupled Dipole$ approach that takes into account linear and nonlinear properties of all dipolar nanoparticles in a given system.
This method is based on a Hamiltonian for nonlinear dipoles, which we apply in different systems uncovering a complex interplay of distance, anisotropy, polarizibilities, and hyperpolarizabilities in the vdW energy.
- Score: 0.0
- License: http://creativecommons.org/licenses/by/4.0/
- Abstract: Van der Waals interactions are ubiquitous and they play an important role for
the stability of materials. Current understanding of this type of coupling is
based on linear response theory, while optical nonlinearities are rarely
considered in this context. Many materials, however, exhibit strong optical
nonlinear response, which prompts further evaluation of dispersive forces
beyond linear response. Here we present a $\textit{Discrete Coupled Nonlinear
Dipole}$ approach that takes into account linear and nonlinear properties of
all dipolar nanoparticles in a given system. This method is based on a
Hamiltonian for nonlinear dipoles, which we apply in different systems
uncovering a complex interplay of distance, anisotropy, polarizibilities, and
hyperpolarizabilities in the vdW energy. This investigation broadens our basic
understanding of dispersive interactions, especially in the context of
nonlinear materials.
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