Put an oven rack in the center of the oven. Preheat the oven to 475 degrees F.
Sprinkle a heavy baking sheet (without sides) with cornmeal. Set aside.
In a food processor, blend the ricotta, garlic, salt, and pepper until smooth.
Add the smoked mozzarella and arugula. Pulse until just combined but still chunky. On a lightly floured work surface, roll out the dough into a 14-inch diameter circle, about 1/4 to 1/16-inch thick.
Transfer the dough to the prepared baking sheet and drizzle with olive oil.
Spread the ricotta mixture on top leaving a 1-inch border. Arrange the tomato slices on top.
Drizzle with olive oil and bake until the crust is golden, about 15 to 16 minutes.