Patterns in the Void

Unparticle Physics

I recently discovered a young branch of theoretical physics: unparticle physics.

Brief and simple explanation of the theory of unparticles from the Wikipedia entry:

All particles exist in states that may be characterized by a certain energy, momentum and mass. In most of the Standard Model of particle physics, particles of the same type cannot exist in another state with all these properties scaled up or down by a common factor – electrons, for example, always have the same mass regardless of their energy or momentum. But this is not always the case: massless particles, such as photons, can exist with their properties scaled equally. This immunity to scaling is called “scale invariance”.

The idea of unparticles comes from conjecturing that there may be “stuff” that does not necessarily have zero mass but is still scale-invariant, with the same physics regardless of a change of length (or equivalently energy). This stuff is unlike particles, and described as unparticle.

Such unparticle stuff has not been observed, which suggests that if it exists, it must couple with normal matter weakly at observable energies.

[caption id=”attachment_531” align=”alignleft” width=”335” caption=”Power Spectrum for Hawking Radiation of Unparticles”][][/caption]

I’ve been reading up on this theory and wanted to post some academic papers so that others may do the same. However, I am having one difficulty: I have no knowledge of Banks-Zaks fields, and Unparticle Physics is almost entirely based upon them. My university doesn’t have a subscription to the journal for that year, and I can’t get the paper without paying \$31.50. Now, I don’t mean to whine or sound like a cheapskate, but I eat mostly rice and boiled cabbage, so \$31.50 could feed me for like two weeks. Plus, who ever heard of theoretical physicists demanding monetary compensation for their ideas, and not uploading their articles to arXiv? Crazy IP nazis. The paper I need is