2 papers
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-th2018
Field redefinitions and Kähler potential in string theory at 1-loop
Michael Haack, Jin U Kang
Field redefinitions at string 1-loop order are often required by supersymmetry, for instance in order to make the Kähler structure of the scalar kinetic terms manifest. We derive t…