4 papers
BRST cohomology of timelike Liouville theory
Teresa Bautista, Harold Erbin, Matěj Kudrna
We compute the Hermitian sector of the relative BRST cohomology of the spacelike and timelike Liouville theories with generic real central charge in each case, coupled to a s…
Localization of effective actions in Heterotic String Field Theory
Harold Erbin, Carlo Maccaferri, Jakub Vošmera
We consider the algebraic couplings in the tree level effective action of the heterotic string. We show how these couplings can be computed from closed string field theory. When th…
Two-Point String Amplitudes
Harold Erbin, Juan Maldacena, Dimitri Skliros
We show that the two-point tree level amplitude in string theory in flat space is given by the standard free particle expression.
Quantum Gravity from Timelike Liouville theory
Teresa Bautista, Atish Dabholkar, Harold Erbin
A proper definition of the path integral of quantum gravity has been a long-standing puzzle because the Weyl factor of the Euclidean metric has a wrong-sign kinetic term. We propos…