The city bus service is operated by CPT (web page in Italian only). The main routes are called LAM (high mobility line); LAMrossa (red) line connects the airport and the train station to the city centre and the Cathedral. Tickets can be bought at tobacconists (1.20 Euro single ticket, less if you buy a 4-ticket or 10-ticket carnet), or on the bus (slightly more expensive, 2.00 Euro).
Bus n. 4 goes from the train station to the Physisc Department (get out at the bus stop "Buonarroti") (about 11 minutes).
Bus n. 4 goes from the train station to the Physisc Department (get out at the bus stop "Buonarroti") (about 11 minutes).