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Title: Probing the pre-BBN universe with gravitational waves from cosmic strings

Journal Article · · Journal of High Energy Physics (Online)
 [1];  [2];  [3];  [4]
  1. Univ. of California, Riverside, CA (United States); DOE/OSTI
  2. King's College London (United Kingdom); Univ. of Warsaw (Poland)
  3. TRIUMF, Vancouver, BC (Canada)
  4. Univ. of Michigan, Ann Arbor, MI (United States); Deutsches Elektronen-Synchrotron (DESY), Hamburg (Germany)

Many motivated extensions of the Standard Model predict the existence of cosmic strings. Gravitational waves originating from the dynamics of the resulting cosmic string network have the ability to probe many otherwise inaccessible properties of the early universe. In this study we show how the spectrum of gravitational waves from a cosmic string network can be used to test the equation of state of the early universe prior to Big Bang Nucleosynthesis (BBN). We also demonstrate that current and planned gravitational wave detectors such as LIGO, LISA, DECIGO/BBO, and ET/CE have the potential to detect signals of a non-standard pre-BBN equation of state and evolution of the early universe (e.g., early non-standard matter domination or kination domination) or new degrees of freedom active in the early universe beyond the sensitivity of terrestrial collider experiments and cosmic microwave background measurements.

Research Organization:
Univ. of California, Riverside, CA (United States); Univ. of Michigan, Ann Arbor, MI (United States)
Sponsoring Organization:
National Research Council of Canada (NRC); Natural Sciences and Engineering Research Council of Canada (NSERC); USDOE Office of Science (SC), High Energy Physics (HEP); USDOE Office of Science (SC), High Energy Physics (HEP) (SC-25)
Grant/Contract Number:
SC0007859; SC0008541
OSTI ID:
1610974
Journal Information:
Journal of High Energy Physics (Online), Journal Name: Journal of High Energy Physics (Online) Journal Issue: 1 Vol. 2019; ISSN 1029-8479
Publisher:
Springer BerlinCopyright Statement
Country of Publication:
United States
Language:
English

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