Greek Alphabet with Weave

Is there a possible way to include the Greek alphabet as part of using Weave for MarkDown to pdf?

As in, use Greek letters in the code and in the output. E.g. \alpha + TAB becomes \alpha in editor, and \alpha becomes \alpha in the plot labels (as an example).

Example below: I can TAB on \alpha and it would become \alpha, and \beta becomes the title of the plot.

Minimum (Not-)Working Example of Code

The equation we are interested in is

\alpha = 1

which can be plotted as:

plot(sol, title = "\beta")