Ccz4::Tags::DivergenceLapse< DataType > Struct Template Reference

The divergence of the lapse. More...

#include <Tags.hpp>

Public Types
using	type = Scalar< DataType >

Detailed Description

template<typename DataType>
struct Ccz4::Tags::DivergenceLapse< DataType >

The divergence of the lapse.

Details

We define:

$$\begin{array}{}\text{(1)}& {\mathrm{\nabla }}^i{\mathrm{\nabla }}_i\alpha & ={\varphi }^2{\tilde{\gamma }}^{ij}({\mathrm{\nabla }}_i{\mathrm{\nabla }}_j\alpha )\end{array}$$

where $\varphi$, ${\tilde{\gamma }}^{ij}$, and ${\mathrm{\nabla }}_i{\mathrm{\nabla }}_j\alpha$ are the conformal factor, inverse conformal spatial metric, and the gradient of the gradient of the lapse defined by Ccz4::Tags::ConformalFactor, Ccz4::Tags::InverseConformalMetric, and Ccz4::Tags::GradGradLapse, respectively.

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The documentation for this struct was generated from the following file:

• src/Evolution/Systems/Ccz4/Tags.hpp