Orbifold line topology and the cosmic microwave background
We extend our study of a universe with a non-classical stringy topology, and consider an orbifold line topology, R x R super(2)/Z sub()p. This topology has a fixed line and identifies each point in space with p - 1 other points. An observable imprint of an orbifold line on the CMB is the appearance...
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| Veröffentlicht in: | Journal of cosmology and astroparticle physics 2013-10, Vol.2013 (10), p.I-10, Article JCAP10(2013)45 |
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| container_title | Journal of cosmology and astroparticle physics |
| container_volume | 2013 |
| creator | Rathaus, Ben Ben-David, Assaf Itzhaki, Nissan |
| description | We extend our study of a universe with a non-classical stringy topology, and consider an orbifold line topology, R x R super(2)/Z sub()p. This topology has a fixed line and identifies each point in space with p - 1 other points. An observable imprint of an orbifold line on the CMB is the appearance of up to (p - 1)/2 pairs of matching circles. Searching the WMAP data for matching circles, we can rule out an orbifold line topology with p up to 10, except for p = 8. While the significance of the peak at p = 8 varies between data releases of WMAP, it does not appear in Planck data, enabling us to rule out p = 8 as well. |
| doi_str_mv | 10.1088/1475-7516/2013/10/045 |
| format | Article |
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| source | IOP Publishing Journals; Institute of Physics (IOP) Journals - HEAL-Link |
| subjects | ASTROPHYSICS, COSMOLOGY AND ASTRONOMY Cosmic microwave background COSMOLOGY Matching RELICT RADIATION Searching SPACE STRING MODELS TOPOLOGY UNIVERSE |
| title | Orbifold line topology and the cosmic microwave background |
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