Causality in String Field Theory

Abstract

In this letter, we will investigate causality in string field theory using pp-wave light-cone gauge string field theory. We will generalize the Ramsey scheme to string field theory, and use it to analyze string field theoretical processes. An explicit characteristic function for interactive string field theory will be built using this string field theoretical Ramsey scheme. The average of the difference between the initial and final values of any operator described in string field theory will be obtained using this characteristic function. We will use the quantum information theoretical technique based on quantum fisher information to extract information about such string field theoretical processes.

Accepted in EPL, 13 pages

References in corpus (9)

• High-fidelity gates in a Josephson qubit
• Off-shell nilpotent finite BRST/anti-BRST transformations
• Unitarity of Superstring Field Theory
• Moments of work in the two-point measurement protocol for a driven open quantum system
• Finite BRST transformation and constrained systems
• Field-dependent symmetries in Friedmann-Robertson-Walker models
• The conformal gauge to the derivative gauge for worldsheet gravity
• Light-cone reduction of Witten's open string field theory
• The Open String Regge Trajectory and Its Field Theory Limit