• Corpus ID: 16074567

A note on Infraparticles and Unparticles

@article{Schroer2008ANO,
  title={A note on Infraparticles and Unparticles},
  author={Bert Schroer},
  journal={arXiv: High Energy Physics - Theory},
  year={2008}
}
  • B. Schroer
  • Published 22 April 2008
  • Physics
  • arXiv: High Energy Physics - Theory
The observed astrophysical phenomenon of dark matter has generated new interest in the problem of whether the principles underlying QFT are consistent with invisibility/inertness of energy-momentum carrying "stuff" as e.g. "unparticles". We show that the 2-dim. model which has been used to illustrate the meaning of unparticles belongs to the class of former infraparticles models and the latter are known to describe electrically charged particles in d=1+3 which despite their nonlocality are our… 

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Abstract. After revisiting some high points of particle physics and QFT of the two decades from 1960 to 1980, I comment on the work by Jorge André Swieca. I explain how it fits into the quantum field

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Unparticle example in 2D.

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References

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Indecomposable semiinfinite string-localized positive energy matter and "darkness"

In the absence of interactions indecomposable positive energy quantum matter comes in form of three families of which the massless so called ”infinite spin” family which appeared first in Wigner’s

A Critical Look at 50 Years Particle Theory from the Perspective of the Crossing Property

The crossing property is perhaps the most subtle aspect of the particle-field relation. Although it is not difficult to state its content in terms of certain analytic properties relating different

String theory and the crisis of particle physics II

This is a completely reformulated presentation of a previous paper hep-th/0611132 with the same title; this time with a much stronger emphasis on conceptual aspects of string theory and a detailed

Localization and the interface between quantum mechanics, quantum field theory and quantum gravity dedicated to the memory of Rob Clifton submitted to "Studies in History and Philosophy of Physics"

We show that there are significant conceptual differences between QM and QFT which make it difficult to view the latter as just a relativistic extension of the principles of QM. At the root of this

Jorge A. Swieca’s contributions to quantum field theory in the 60s and 70s and their relevance in present research

Abstract. After revisiting some high points of particle physics and QFT of the two decades from 1960 to 1980, I comment on the work by Jorge André Swieca. I explain how it fits into the quantum field

String theory and the crisis of particle physics II or the ascent of metaphoric arguments

This is a completely reformulated presentation of a previous paper with the same title; this time with a much stronger emphasis on conceptual aspects of string theory and a detailed review of its

Unparticle example in 2D.

It is argued that the exactly soluble 2D theory of a massless fermion coupled to a massive vector boson, the Sommerfield model, is an interesting analog of a Banks-Zaks model, approaching a free theory at high energies and a scale-invariant theory with nontrivial anomalous dimensions at low energies.
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