The String Light Cone in the pp-wave Background

Abstract

In this letter, we determine the particle and the string light cone in the pp-wave background. The result is a deformed version of the flat one. We point out the light cone exhibits an intriguing periodicity in the light cone time direction x^+ with a period \sim 1/ μ. Our results also suggest that a quantum theory in the pp-wave background can be formulated consistently only if the background is periodic in the light cone time x^+.

10 pages. v2: references and comments added

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Cited by in corpus (5)

• Light-Cone String Field Theory in a Plane Wave Background
• PP-Wave Light-Cone Free String Field Theory at Finite Temperature
• Non-local Matching Condition and Scale-invariant Spectrum in Bouncing Cosmology
• Local Commutativity and Causality in Interacting PP-wave String Field Theory
• Causality in String Field Theory