TY - JOUR
T1 - Primordial Anisotropies in the Gravitational Wave Background from Cosmological Phase Transitions
AU - Geller, Michael
AU - Hook, Anson
AU - Sundrum, Raman
AU - Tsai, Yuhsin
N1 - Publisher Copyright:
© 2018 authors. Published by the American Physical Society. Published by the American Physical Society under the terms of the »https://creativecommons.org/licenses/by/4.0/» Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article's title, journal citation, and DOI. Funded by SCOAP.
PY - 2018/11/16
Y1 - 2018/11/16
N2 - Phase transitions in the early Universe can readily create an observable stochastic gravitational wave background. We show that such a background necessarily contains anisotropies analogous to those of the cosmic microwave background (CMB) of photons, and that these too may be within reach of proposed gravitational wave detectors. Correlations within the gravitational wave anisotropies and their cross-correlations with the CMB can provide new insights into the mechanism underlying primordial fluctuations, such as multifield inflation, as well as reveal the existence of nonstandard "hidden sectors" of particle physics in earlier eras.
AB - Phase transitions in the early Universe can readily create an observable stochastic gravitational wave background. We show that such a background necessarily contains anisotropies analogous to those of the cosmic microwave background (CMB) of photons, and that these too may be within reach of proposed gravitational wave detectors. Correlations within the gravitational wave anisotropies and their cross-correlations with the CMB can provide new insights into the mechanism underlying primordial fluctuations, such as multifield inflation, as well as reveal the existence of nonstandard "hidden sectors" of particle physics in earlier eras.
UR - http://www.scopus.com/inward/record.url?scp=85056704882&partnerID=8YFLogxK
U2 - 10.1103/PhysRevLett.121.201303
DO - 10.1103/PhysRevLett.121.201303
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C2 - 30500214
AN - SCOPUS:85056704882
SN - 0031-9007
VL - 121
JO - Physical Review Letters
JF - Physical Review Letters
IS - 20
M1 - 201303
ER -