Home > Publications database > Effect of density fluctuations on gravitational wave production in first-order phase transitions > print

001     462695
005     20230510133055.0
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024 7 _ |2 inspire
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024 7 _ |2 arXiv
|a arXiv:2108.11947
024 7 _ |2 datacite_doi
|a 10.3204/PUBDB-2021-03536
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037 _ _ |a PUBDB-2021-03536
041 _ _ |a English
082 _ _ |a 530
088 _ _ |2 DESY
|a DESY-21-131
088 _ _ |2 arXiv
|a arXiv:2108.11947
100 1 _ |0 P:(DE-H253)PIP1088210
|a Jinno, Ryusuke
|b 0
245 _ _ |a Effect of density fluctuations on gravitational wave production in first-order phase transitions
260 _ _ |c 2021
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336 7 _ |0 28
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|a Output Types/Working Paper
500 _ _ |a 22 pages, 14 figures
520 _ _ |a We study the effect of density perturbations on the process of first-order phase transitions and gravitational wave production in the early Universe. We are mainly interested in how the distribution of nucleated bubbles is affected by fluctuations in the local temperature. We find that large-scale density fluctuations ($H_* < k_* < \beta$) result in a larger effective bubble size at the time of collision, enhancing the produced amplitude of gravitational waves. The amplitude of the density fluctuations necessary for this enhancement is ${\cal P}_\zeta (k_*) \gtrsim (\beta / H_*)^{-2}$, and therefore the gravitational wave signal from first-order phase transitions with relatively large $\beta / H_*$ can be significantly enhanced by this mechanism even for fluctuations with moderate amplitudes.
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588 _ _ |a Dataset connected to CrossRef, INSPIRE, Journals: bib-pubdb1.desy.de
650 _ 7 |2 INSPIRE
|a density: fluctuation
650 _ 7 |2 INSPIRE
|a effect: density
650 _ 7 |2 INSPIRE
|a density: perturbation
650 _ 7 |2 INSPIRE
|a bubble: size
650 _ 7 |2 INSPIRE
|a gravitational radiation: emission
650 _ 7 |2 INSPIRE
|a bubble: nucleation
650 _ 7 |2 INSPIRE
|a critical phenomena
650 _ 7 |2 INSPIRE
|a temperature: fluctuation
650 _ 7 |2 autogen
|a cosmological phase transitions
650 _ 7 |2 autogen
|a gravitational waves / sources
693 _ _ |0 EXP:(DE-MLZ)NOSPEC-20140101
|5 EXP:(DE-MLZ)NOSPEC-20140101
|e No specific instrument
|x 0
700 1 _ |0 P:(DE-H253)PIP1081400
|a Rubira, Henrique
|b 1
700 1 _ |0 P:(DE-H253)PIP1015746
|a Konstandin, Thomas
|b 2
700 1 _ |0 P:(DE-H253)PIP1090282
|a Vis, Jorinde Marjolein van de
|b 3
|e Corresponding author
856 4 _ |u https://bib-pubdb1.desy.de/record/462695/files/HTML-Approval_of_scientific_publication.html
856 4 _ |u https://bib-pubdb1.desy.de/record/462695/files/PDF-Approval_of_scientific_publication.pdf
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914 1 _ |y 2021
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