Physics Group Meeting

The set of low-energy effective theories that do not admit an ultraviolet completion in string theory is known as the ``swampland." Developing criteria to determine which effective theories belong in the string landscape and which ones belong in the swampland is a daunting task, but one of the most promising candidates is the Weak Gravity Conjecture (WGC). In this talk, we will see that the WGC, if true, has important consequences for axion inflation, and we will explore possible variants of the conjecture.