Twin Peaks

Details Twin Peaks Twin Peaks

2000-08-12

arxiv.org/abs/hep-ph/0008122v2

Physics

High Energy Physics

High Energy Physics - Phenomenology

Presented at SEWM 2000, language corrections

Scientific paper

The on-shell imaginary part of the retarded selfenergy of massive $\vr^4$ theory in 1+1 dimensions is logarithmically infrared divergent. This leads to a zero in the spectral function, separating its usual bump into two. The twin peaks interfere in time-dependent correlation functions, which causes oscillating modulations on top of exponential-like decay, while the usual formulas for the decay rate fail. We see similar modulations in our numerical results for a mean field correlator, using a Hartree ensemble approximation.

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