181 citations · 1.7k across the 78 of their papers we have counts for
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Some Phenomenological Consequences of the Time-Ordered Perturbation Theory of QED on Noncommutative Spacetime
Yi Liao, Christoph Dehne
A framework was recently proposed for doing perturbation theory on noncommutative (NC) spacetime. It preserves the unitarity of S matrix and differs from the naive, popular approac…
Spectral Representation and Dispersion Relations in Field Theory on Noncommutative Space
Yi Liao, Klaus Sibold
We study the spectral representation and dispersion relations that follow from some basic assumptions and the reduced spacetime symmetries on noncommutative (NC) space. Kinematic v…
Time-ordered Perturbation Theory on Noncommutative Spacetime II: Unitarity
Yi Liao, Klaus Sibold
We examine the unitarity issue in the recently proposed time-ordered perturbation theory on noncommutative (NC) spacetime. We show that unitarity is preserved as long as the intera…
Validity of Goldstone Theorem at Two Loops in Noncommutative U(N) Linear Sigma Model
Yi Liao
The scalar theory is ultraviolet (UV) quadratically divergent on ordinary spacetime. On noncommutative (NC) spacetime, this divergence will generally induce pole-like infrared (IR)…
Time-ordered Perturbation Theory on Noncommutative Spacetime: Basic Rules
Yi Liao, Klaus Sibold
Assuming the S-matrix on noncommutative (NC) spacetime can still be developped perturbatively in terms of the time-ordered exponential of the interaction Lagrangian, we investigate…
One Loop Renormalizability of Spontaneously Broken Gauge Theory with a Product of Gauge Groups on Noncommutative Spacetime: the U(1) x U(1) Case
Yi Liao
A generalization of the standard electroweak model to noncommutative spacetime would involve a product gauge group which is spontaneously broken. Gauge interactions in terms of phy…