29 Citations
Two-loop superstring five-point amplitudes. Part I. Construction via chiral splitting and pure spinors
- Mathematics
- 2020
The full two-loop amplitudes for five massless states in Type II and Heterotic superstrings are constructed in terms of convergent integrals over the genus-two moduli space of compact Riemann…
Finite strings from non-chiral Mumford forms
- Mathematics
- 2012
A bstractWe show that there is an infinite class of partition functions with world-sheet metric, space-time coordinates and first order systems, that correspond to volume forms on the moduli space of…
Hyperbolic Geometry of Superstring Perturbation Theory
- Physics
- 2017
The hyperbolic structure of the RNS formulation of perturbative superstring theory is explored, with the goal of providing a systematic method for explicitly evaluating both the on-shell and the…
Two-loop superstring five-point amplitudes. Part III. Construction via the RNS formulation: even spin structures
- PhysicsJournal of High Energy Physics
- 2021
Abstract
The contribution from even spin structures to the genus-two amplitude for five massless external NS states in Type II and Heterotic superstrings is evaluated from first principles in the…
Topics in Two-Loop Superstring Perturbation Theory
- Physics
- 2014
In this contribution to the Proceedings of the Conference on Analysis, Complex Geometry, and Mathematical Physics, an expository overview of superstring perturbation theory to two loop order is…
Off-shell Amplitudes in Superstring Theory
- Physics
- 2018
Computing the renormalized masses and S-matrix elements in string theory, involving states whose masses are not protected from quantum corrections, requires defining off-shell amplitude with certain…
Gauge invariant 1PI effective superstring field theory: inclusion of the Ramond sector
- Physics
- 2015
A bstractWe construct off-shell amplitudes in heterotic and type II string theories in-volving arbitrary combination of Ramond and Neveu-Schwarz sector external states. We also construct the…
References
SHOWING 1-10 OF 85 REFERENCES
Lectures on two loop superstrings
- Physics
- 2002
In these lectures, recent progress on multiloop superstring perturbation theory is reviewed. A construction from first principles is given for an unambiguous and slice-independent two-loop…
Multiloop Amplitudes and Vanishing Theorems using the Pure Spinor Formalism for the Superstring
- Mathematics
- 2004
A ten-dimensional super-Poincare covariant formalism for the superstring was recently developed which involves a BRST operator constructed from superspace matter variables and a pure spinor ghost…