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The scalar, vector,...
The scalar, vector, and tensor modes in gravitational wave turbulence simulations
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- Brandenburg, Axel (författare)
- KTH,Stockholms universitet,Nordiska institutet för teoretisk fysik (Nordita),Institutionen för astronomi,Carnegie Mellon University, United States of America; Ilia State University, Georgia,Nordic Institute for Theoretical Physics NORDITA,Stockholm Univ, Hannes Alfvens Vagen 12, S-10691 Stockholm, Sweden.;Stockholm Univ, AlbaNova Univ Ctr, Dept Astron, S-10691 Stockholm, Sweden.;Carnegie Mellon Univ, Dept Phys, 5000 Forbes Ave, Pittsburgh, PA 15213 USA.;Carnegie Mellon Univ, McWilliams Ctr Cosmol, 5000 Forbes Ave, Pittsburgh, PA 15213 USA.;Ilia State Univ, Sch Nat Sci & Med, 3-5 Cholokashvili St, GE-0194 Tbilisi, Georgia.
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- Gogoberidze, Grigol (författare)
- Ilia State Univ, Sch Nat Sci & Med, 3-5 Cholokashvili St, GE-0194 Tbilisi, Georgia.
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- Kahniashvili, Tina (författare)
- Carnegie Mellon Univ, Dept Phys, 5000 Forbes Ave, Pittsburgh, PA 15213 USA.;Carnegie Mellon Univ, McWilliams Ctr Cosmol, 5000 Forbes Ave, Pittsburgh, PA 15213 USA.;Ilia State Univ, Sch Nat Sci & Med, 3-5 Cholokashvili St, GE-0194 Tbilisi, Georgia.;Laurentian Univ, Dept Phys, Sudbury, ON P3E 2C, Canada.;Abastumani Astrophys Observ, 47-57 Kostava St, GE-0179 Tbilisi, Georgia.
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- Mandal, Sayan (författare)
- Ilia State Univ, Sch Nat Sci & Med, 3-5 Cholokashvili St, GE-0194 Tbilisi, Georgia.;SUNY Stony Brook, Phys & Astron Dept, 100 Nicolls Rd, Stony Brook, NY 11794 USA.
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- Pol, Alberto Roper (författare)
- Ilia State Univ, Sch Nat Sci & Med, 3-5 Cholokashvili St, GE-0194 Tbilisi, Georgia.;Univ Paris, CNRS, Astrophys & Cosmol, F-75013 Paris, France.
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- Shenoy, Nakul (författare)
- MIT, Dept Phys, Cambridge, MA 02139 USA.
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(creator_code:org_t)
- 2021-06-15
- 2021
- Engelska.
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Ingår i: Classical and quantum gravity. - : IOP Publishing. - 0264-9381 .- 1361-6382. ; 38:14
- Relaterad länk:
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http://arxiv.org/pdf...
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https://urn.kb.se/re...
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https://doi.org/10.1...
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https://urn.kb.se/re...
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Abstract
Ämnesord
Stäng
- We study the gravitational wave (GW) signal sourced by primordial turbulence that is assumed to be present at cosmological phase transitions like the electroweak and quantum chromodynamics phase transitions. We consider various models of primordial turbulence, such as those with and without helicity, purely hydrodynamical turbulence induced by fluid motions, and magnetohydrodynamic turbulence whose energy can be dominated either by kinetic or magnetic energy, depending on the nature of the turbulence. We also study circularly polarized GWs generated by parity violating sources such as helical turbulence. Our ultimate goal is to determine the efficiency of GW production through different classes of turbulence. We find that the GW energy and strain tend to be large for acoustic or irrotational turbulence, even though its tensor mode amplitude is relatively small at most wave numbers. Only at very small wave numbers is the spectral tensor mode significant, which might explain the efficient GW production in that case.
Ämnesord
- NATURVETENSKAP -- Fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences (hsv//eng)
- NATURVETENSKAP -- Fysik -- Astronomi, astrofysik och kosmologi (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Astronomy, Astrophysics and Cosmology (hsv//eng)
Nyckelord
- primordial magnetic fields
- magnetohydrodynamic turbulence
- circular polarization
- primordial gravitational waves
- Quantum Science & Technology
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
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