Home > Publications database > Model-independent energy budget of cosmological first-order phase transitions—A sound argument to go beyond the bag model > print

001     456480
005     20211222091217.0
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024 7 _ |2 arXiv
|a arXiv:2004.06995
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037 _ _ |a PUBDB-2021-01476
041 _ _ |a English
082 _ _ |a 530
088 _ _ |2 arXiv
|a arXiv:2004.06995
088 _ _ |2 DESY
|a DESY-20-064
100 1 _ |0 P:(DE-H253)PIP1025382
|a Giese, Felix
|b 0
|e Corresponding author
245 _ _ |a Model-independent energy budget of cosmological first-order phase transitions—A sound argument to go beyond the bag model
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500 _ _ |a 24 pages, 2 figures
520 _ _ |a We study the energy budget of a first-order cosmological phase transition, which is an important factor in the prediction of the resulting gravitational wave spectrum. Formerly, this analysis was based mostly on simplified models as for example the bag equation of state. Here, we present a model-independent approach that is exact up to the temperature dependence of the speed of sound in the broken phase. We find that the only relevant quantities that enter in the hydrodynamic analysis are the speed of sound in the broken phase and a linear combination of the energy and pressure differences between the two phases which we call pseudotrace (normalized to the enthalpy in the broken phase). The pseudotrace quantifies the strength of the phase transition and yields the conventional trace of the energy-momentum tensor for a relativistic plasma (with speed of sound squared of one third). We study this approach in several realistic models of the phase transition and also provide a code snippet that can be used to determine the efficiency coefficient for a given phase transition strength and speed of sound. It turns out that our approach is accurate to the percent level for moderately strong phase transitions, while former approaches give at best the right order of magnitude.
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588 _ _ |a Dataset connected to CrossRef, INSPIRE, Journals: bib-pubdb1.desy.de
650 _ 7 |2 INSPIRE
|a velocity: acoustic
650 _ 7 |2 INSPIRE
|a gravitational radiation: spectrum
650 _ 7 |2 INSPIRE
|a gravitational radiation: emission
650 _ 7 |2 INSPIRE
|a tensor: energy-momentum
650 _ 7 |2 INSPIRE
|a plasma: relativistic
650 _ 7 |2 INSPIRE
|a critical phenomena
650 _ 7 |2 INSPIRE
|a temperature dependence
650 _ 7 |2 INSPIRE
|a equation of state
650 _ 7 |2 INSPIRE
|a bag model
650 _ 7 |2 INSPIRE
|a numerical calculations
650 _ 7 |2 INSPIRE
|a energy: kinetic
650 _ 7 |2 INSPIRE
|a bubble
650 _ 7 |2 INSPIRE
|a hydrodynamics
650 _ 7 |2 autogen
|a cosmological phase transitions
650 _ 7 |2 autogen
|a gravitational waves / sources
650 _ 7 |2 autogen
|a gravitational waves/ experiments
650 _ 7 |2 autogen
|a gravitational waves / theory
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700 1 _ |0 P:(DE-H253)PIP1015746
|a Konstandin, Thomas
|b 1
700 1 _ |0 P:(DE-H253)PIP1090282
|a Vis, Jorinde Marjolein van de
|b 2
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856 4 _ |u https://bib-pubdb1.desy.de/record/456480/files/2004.06995v2.pdf
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