If a Ghost site has multiple tabs, can each tab use a different theme?

My client is considering setting up a Ghost site with tabs pointing to fundamentally different types of pages - for example, an event management/registration page, a blog on current trends, etc.

Given the different functions of each page, the hope is that there is an option for each tab on the homepage to open up to a distinctly different format/layout - is it possible to apply more than one template on a Ghost site?