Physics – High Energy Physics – High Energy Physics - Theory
Scientific paper
2003-04-22
Phys.Lett. B566 (2003) 240-247
Physics
High Energy Physics
High Energy Physics - Theory
10 pages. v2: references and comments added
Scientific paper
10.1016/S0370-2693(03)00836-0
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/ \mu. 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^+.
Chu Chong-Sun
Kyritsis Konstantinos
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