TY - JOUR
T1 - Ultraviolet complete Lorentz-invariant theory with superluminal signal propagation
AU - Cooper, Patrick
AU - Dubovsky, Sergei
AU - Mohsen, Ali
PY - 2014/4/9
Y1 - 2014/4/9
N2 - 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.
AB - 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.
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U2 - 10.1103/PhysRevD.89.084044
DO - 10.1103/PhysRevD.89.084044
M3 - Article
AN - SCOPUS:84898653673
SN - 1550-7998
VL - 89
JO - Physical Review D - Particles, Fields, Gravitation and Cosmology
JF - Physical Review D - Particles, Fields, Gravitation and Cosmology
IS - 8
M1 - 084044
ER -