3 papers
hep-th2025
Black Holes and Abelian Instantons
Isabel Garcia Garcia, Elliot Maderazo
We argue that the electromagnetic -term is a physical parameter of the Standard Model coupled to gravity. Specifically, in the context of 4-dimensional Einstein-Maxwell theory w…
hep-th2025
Dyon Loops and Abelian Instantons
Isabel Garcia Garcia, Marius Kongsore, Ken Van Tilburg
We construct Abelian gauge field configurations that carry non-zero instanton number. Each such "Abelian instanton" is generated by a closed magnetic worldline in four-dimensional…
hep-ph2024
Axion Interactions with Domain and Bubble Walls
Isabel Garcia Garcia, Rudin Petrossian-Byrne
We show that interactions between axion-like particles (ALPs) and co-dimension one defects, such as phase-transition bubble walls and solitonic domain walls, can lead to important…