Bietenholz 2010 光子色散隐含的新物理

主要内容:
就是spectral time lag
一些新的模型可能导致这样一些现象。不过还没有确切的观测现象。

精彩摘抄:


文章信息:

· Find Similar Abstracts (with default settings below)

· arXiv e-print (arXiv:1008.3886)

· References in the Article

·

· Translate This Page

Title:		The Photon Dispersion as an Indicator for New Physics ?
Authors:		Bietenholz, Wolfgang
Publication:		eprint arXiv:1008.3886
Publication Date:		08/2010
Origin:		ARXIV
Keywords:		High Energy Physics - Phenomenology, Astrophysics - High Energy Astrophysical Phenomena, High Energy Physics - Lattice, High Energy Physics - Theory
Comment:		8 pages, 4 figures, talk presented at the VI International Workshop on the Dark Side of the Universe, Leon (Mexico), June 1-6, 2010
Bibliographic Code:		2010arXiv1008.3886B

Abstract

We first comment on the search for a deviation from the linear photon dispersion relation, in particular based on cosmic photons from Gamma Ray Bursts. Then we consider the non-commutative space as a theoretical concept that could lead to such a deviation, which would be a manifestation of Lorentz Invariance Violation. In particular we review a numerical study of pure U(1) gauge theory in a 4d non-commutative space. Starting from a finite lattice, we explore the phase diagram and the extrapolation to the continuum and infinite volume. These simultaneous limits - taken at fixed non-commutativity - lead to a phase of broken Poincare symmetry, where the photon appears to be IR stable, despite a negative IR divergence to one loop.

---

Bibtex entry for this abstract   Preferred format for this abstract (see Preferences)