کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1770990 1020716 2012 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Dark energy from neutrinos and standard model Higgs potential
کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه فیزیک و نجوم نجوم و فیزیک نجومی
پیش نمایش صفحه اول مقاله
Dark energy from neutrinos and standard model Higgs potential
چکیده انگلیسی

The dark energy density of the universe is obtained from the Higgs potential by introducing a Higgs-dependent neutrino mass. In the standard picture of electro-weak symmetry breaking the Higgs potential is Vϕ = (λ/4)(ϕ2 − v2)2 and the Higgs field rolls down to the minima at 〈ϕ〉 = v = 246.2 GeV and the net vacuum energy is zero. Now if the neutrino mass is a function of the Higgs field, then the vacuum expectation value of the Higgs is determined by maximizing the total pressure of the Higgs self interaction and the neutrino fluid Pϕ + Pν(m(ϕ)) w.r.t ϕ. The new minima 〈ϕ〉 = v + σm shifts from the standard Higgs vev v by a small amount σm. The total pressure of the Higgs-neutrino coupled fluid Pϕ(v + σm) + Pν(v + σm) = −ρΛ appears as the dark energy density of the universe. The magnitude of the dark energy is thus determined by to the neutrino mass and the Higgs potential.


► We examine the possibility that neutrino varying mass can explain dark energy.
► The neutrino mass is a steep function of the Higgs field.
► The Higgs coupling gives a contact interaction between neutrinos.
► Formation of neutrino nuggets and clustering at astrophysical scales are avoided.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Astroparticle Physics - Volume 35, Issue 10, May 2012, Pages 629–633
نویسندگان
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