3 papers
hep-th2026
Gauging in superconductors and other electronic systems
Marcus Berg, Andrea Cappelli, Riccardo Villa
Ordinary, s-wave superconductors have been recognized as being topological phases of matter, in which the dynamical gauge field implies less understood global features. Using the t…
hep-th2026
One-loop Amplitudes: String Methods, Infrared Regularization, and Automation
Marcus Berg, Michael Haack, Yonatan Zimmerman
We calculate field theory loop amplitudes by string methods, applied to half-maximal 4-point one-loop graviton amplitudes. Infrared divergences are regulated similarly to soft-coll…
hep-th2003
Brane/Flux Interactions in Orientifolds
Marcus Berg, Michael Haack, Boris Kors
Combining the benefits of D-branes and background fluxes in string compactifications opens up the possibility to explore phenomenologically interesting brane world models with stab…