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Primordial non-Gaus...
Primordial non-Gaussianity from the effects of the Standard Model Higgs during reheating after inflation
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- Litsa, Aliki (author)
- Stockholms universitet,Fysikum,Oskar Klein-centrum för kosmopartikelfysik (OKC),Stockholm Univ, Oskar Klein Ctr Cosmoparticle Phys, Dept Phys, S-10691 Stockholm, Sweden.
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- Freese, Katherine (author)
- Stockholms universitet,KTH,Nordic Institute for Theoretical Physics NORDITA,Stockholm Univ, Oskar Klein Ctr Cosmoparticle Phys, Dept Phys, S-10691 Stockholm, Sweden.;Univ Texas Austin, Dept Phys, Austin, TX 78712 USA.;Stockholm Univ, Roslagstullsbacken 23, S-10691 Stockholm, Sweden.,Fysikum,Oskar Klein-centrum för kosmopartikelfysik (OKC),Nordiska institutet för teoretisk fysik (Nordita),University of Texas, United States
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- Sfakianakis, Evangelos I. (author)
- Barcelona Inst Sci & Technol BIST, Inst Fis Altes Energies IFAE, Campus UAB, Barcelona 08193, Spain.;Nikhef, Sci Pk 105, NL-1098 XG Amsterdam, Netherlands.;Leiden Univ, Inst Lorentz Theoret Phys, NL-2333 CA Leiden, Netherlands.
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- Stengel, Patrick (author)
- Stockholms universitet,Fysikum,Oskar Klein-centrum för kosmopartikelfysik (OKC),Scuola Internazionale Superiore di Studi Avanzati (SISSA), Italy ; INFN, Sezione di Trieste, Italy ; Institute for Fundamental Physics of the Universe (IFPU), Italy,Stockholm Univ, Oskar Klein Ctr Cosmoparticle Phys, Dept Phys, S-10691 Stockholm, Sweden.;Scuola Int Super Avanzati SISSA, Via Bonomea 265, I-34136 Trieste, Italy.;INFN, Sezione Trieste, Via Valerio 2, I-34127 Trieste, Italy.;Inst Fundamental Phys Universe IFPU, Via Beirut 2, I-34151 Trieste, Italy.
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- Visinellij, Luca (author)
- Tsung Dao Lee Inst TDLI, 520 Shengrong Rd, Shanghai 201210, Peoples R China. Shanghai Jiao Tong Univ, Sch Phys & Astron, 800 Dongchuan Rd, Shanghai 200240, Peoples R China.
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(creator_code:org_t)
- 2023-03-14
- 2023
- English.
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In: Journal of Cosmology and Astroparticle Physics. - : IOP Publishing. - 1475-7516. ; 2023:03, s. 033-
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Abstract
Subject headings
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- We propose a new way of studying the Higgs potential at extremely high energies. The Standard Model (SM) Higgs boson, as a light spectator field during inflation in the early Universe, can acquire large field values from its quantum fluctuations which vary among different causal (Hubble) patches. Such a space dependence of the Higgs after the end of inflation leads to space-dependent SM particle masses and hence variable efficiency of reheating, when the inflaton decays to Higgsed SM particles. Inhomogeneous reheating results in (observable) temperature anisotropies. Further, the resulting temperature anisotropy spectrum acquires a significant non-Gaussian component, which is constrained by Planck observations of the Cosmic Microwave Background (CMB) and potentially detectable in next-generation experiments. Constraints on this non-Gaussian signal largely exclude the possibility of the observed temperature anisotropies arising primarily from Higgs effects. Hence, in principle, observational searches for non-Gaussianity in the CMB can be used to constrain the dynamics of the Higgs boson at very high (inflationary) energies.
Subject headings
- NATURVETENSKAP -- Fysik -- Astronomi, astrofysik och kosmologi (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Astronomy, Astrophysics and Cosmology (hsv//eng)
Keyword
- inflation
- Inflation and CMBR theory
- non-gaussianity
Publication and Content Type
- ref (subject category)
- art (subject category)
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