Ultraviolet complete Lorentz-invariant theory with superluminal signal propagation

Patrick Cooper, Sergei Dubovsky, and Ali Mohsen
Phys. Rev. D 89, 084044 – Published 9 April 2014

Abstract

We describe a UV complete asymptotically fragile Lorentz-invariant theory exhibiting superluminal signal propagation. Its low energy effective action contains “wrong” sign higher dimensional operators. Nevertheless, the theory gives rise to an S matrix, which is defined at all energies. As expected for a nonlocal theory, the corresponding scattering amplitudes are not exponentially bounded on the physical sheet, but otherwise are healthy. We study some of the physical consequences of this S matrix.

  • Figure
  • Received 3 January 2014

DOI:https://doi.org/10.1103/PhysRevD.89.084044

© 2014 American Physical Society

Authors & Affiliations

Patrick Cooper, Sergei Dubovsky, and Ali Mohsen

  • Center for Cosmology and Particle Physics, Department of Physics, New York University, New York, New York 10003, USA

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Issue

Vol. 89, Iss. 8 — 15 April 2014

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