PhysRevD.76.043005.pdf (645.79 kB)
CMB polarization power spectra contributions from a network of cosmic strings
journal contribution
posted on 2023-06-07, 22:03 authored by Neil Bevis, Mark HindmarshMark Hindmarsh, Martin Kunz, Jon UrrestillaWe present the first calculation of the possible (local) cosmic string contribution to the cosmic microwave background polarization spectra from simulations of a string network (rather than a stochastic collection of unconnected string segments). We use field-theory simulations of the Abelian Higgs model to represent local U(1) strings, including their radiative decay and microphysics. Relative to previous estimates, our calculations show a shift in power to larger angular scales, making the chance of a future cosmic string detection from the B-mode polarization slightly greater. We explore a future ground-based polarization detector, taking the CLOVER project as our example. In the null hypothesis (that cosmic strings make a zero contribution) we find that CLOVER should limit the string tension mu to G mu < 0.12x10(-6) (where G is the gravitational constant), above which it is likely that a detection would be possible.
History
Publication status
- Published
File Version
- Published version
Journal
Physical Review DISSN
0556-2821External DOI
Issue
4Volume
76Department affiliated with
- Physics and Astronomy Publications
Notes
Article Number: 043005Full text available
- Yes
Peer reviewed?
- Yes
Legacy Posted Date
2012-02-06First Open Access (FOA) Date
2016-03-22First Compliant Deposit (FCD) Date
2016-11-10Usage metrics
Categories
No categories selectedKeywords
Licence
Exports
RefWorks
BibTeX
Ref. manager
Endnote
DataCite
NLM
DC