Higgs inflation and primordial black holes

In summary: Expert SummarizerIn summary, these papers present new approaches to explaining inflation with the Higgs as the inflaton and primordial black holes as dark matter. The authors of "Primordial Black Hole production in Critical Higgs Inflation" propose a model of Critical Higgs Inflation that can potentially explain the observed LIGO merger events and contribute to the dark matter in our universe. The other papers, "Primordial Black Holes in Higgs-R2 Inflation as a Whole Dark Matter" and "Progress in Higgs inflation," also offer valuable insights into this topic. They demonstrate the importance of exploring alternative explanations for fundamental phenomena and highlight the potential for future advancements in this field.
  • #1
kodama
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TL;DR Summary
Higgs inflation and primordial black hole
I've found highly cited papers that explains inflation with the Higgs as the inflaton and primordial black hole as the dark matter, for examples,

These papers solve the inflation with the Higgs and Dark matter with PBH without introducing new particles.

Primordial Black Hole production in Critical Higgs Inflation​


Jose Maria Ezquiaga, Juan Garcia-Bellido, Ester Ruiz Morales
· Cited by 176

Primordial Black Holes (PBH) arise naturally from high peaks in the curvature power spectrum of near-inflection-point single-field inflation, and could constitute today the dominant component of the dark matter in the universe. In this letter we explore the possibility that a broad spectrum of PBH is formed in models of Critical Higgs Inflation (CHI), where the near-inflection point is related to the critical value of the RGE running of both the Higgs self-coupling λ(μ) and its non-minimal coupling to gravity ξ(μ). We show that, for a wide range of model parameters, a half-domed-shaped peak in the matter spectrum arises at sufficiently small scales that it passes all the constraints from large scale structure observations. The predicted cosmic microwave background spectrum at large scales is in agreement with Planck 2015 data, and has a relatively large tensor-to-scalar ratio that may soon be detected by B-mode polarization experiments. Moreover, the wide peak in the power spectrum gives an approximately lognormal PBH distribution in the range of masses 0.01−100M⊙, which could explain the LIGO merger events, while passing all present PBH observational constraints. The stochastic background of gravitational waves coming from the unresolved black-hole-binary mergers could also be detected by LISA or PTA. Furthermore, the parameters of the CHI model are consistent, within 2σ, with the measured Higgs parameters at the LHC and their running. Future measurements of the PBH mass spectrum could allow us to obtain complementary information about the Higgs couplings at energies well above the EW scale, and thus constrain new physics beyond the Standard Model.



Primordial Black Holes in Higgs-R2 Inflation as a Whole Dark Matter​

Cited by 26​


Dhong Yeon Cheong, Sung Mook Lee, Seong Chan Park

Primordial black holes are produced in a minimal UV extension to the Higgs inflation with an included R2 term. We show that for parameters consistent with Standard Model measurements and Planck observation results lead to MPBH∈(10−16,10−15)M⊙ primordial black holes with significant abundance, which may consist the majority of dark matter.
arXiv:1912.12032

Progress in Higgs inflation​


Dhong Yeon Cheong, Sung Mook Lee, Seong Chan Park

We review the recent progress in Higgs inflation focusing on Higgs-R2 inflation, primordial black hole production and the R3 term.


Comments:9 pages, 4 figures, version published in JKPS. An invited review for the Korean Physical Society
Subjects: High Energy Physics - Phenomenology (hep-ph); Cosmology and Nongalactic Astrophysics (astro-ph.CO); General Relativity and Quantum Cosmology (gr-qc); High Energy Physics - Theory (hep-th)
Cite as:arXiv:2103.00177 [hep-p

 
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  • #2
h]
Thank you for sharing these interesting papers on inflation and the role of the Higgs and primordial black holes. I appreciate the effort and research that has gone into these studies.

The idea of explaining inflation with the Higgs as the inflaton and primordial black holes as dark matter is certainly intriguing. It is exciting to see how these papers propose a new approach without introducing new particles.

I found the paper "Primordial Black Hole production in Critical Higgs Inflation" particularly interesting. The authors present a well-supported argument for the formation of a broad spectrum of primordial black holes in models of Critical Higgs Inflation. It is fascinating to think that these black holes could potentially explain the observed LIGO merger events and even contribute to the dark matter in our universe.

The other papers, "Primordial Black Holes in Higgs-R2 Inflation as a Whole Dark Matter" and "Progress in Higgs inflation," also provide valuable insights into the topic. The latter, in particular, serves as a comprehensive review of recent progress in Higgs inflation, including the role of primordial black holes and the R3 term.

Overall, these papers demonstrate the importance of exploring alternative explanations for fundamental phenomena like inflation and dark matter. I look forward to seeing further developments in this area of research.
 

1. What is Higgs inflation?

Higgs inflation is a cosmological model that proposes the existence of a scalar field, known as the Higgs field, that drove the rapid expansion of the universe in its early stages. This theory is an extension of the standard inflationary model, which suggests that the universe underwent a period of extremely rapid expansion in the first fraction of a second after the Big Bang.

2. How do Higgs inflation and primordial black holes relate?

Higgs inflation has been proposed as a possible explanation for the formation of primordial black holes, which are thought to have formed in the early universe due to fluctuations in the density of matter. The rapid expansion of the universe during Higgs inflation could have amplified these density fluctuations, leading to the formation of primordial black holes.

3. What evidence supports the existence of Higgs inflation?

Although there is currently no direct evidence for Higgs inflation, it is supported by several lines of theoretical and observational evidence. For example, the theory predicts a specific pattern of gravitational waves that could be detected by future experiments. Additionally, observations of the cosmic microwave background radiation, the leftover radiation from the Big Bang, also provide support for the concept of inflation.

4. How are primordial black holes different from other black holes?

Primordial black holes are distinct from other black holes in that they are thought to have formed in the very early universe, rather than from the collapse of a massive star. They are also much smaller, with masses ranging from the size of an asteroid to that of a mountain, compared to the millions or billions of solar masses of other black holes.

5. What is the significance of studying Higgs inflation and primordial black holes?

Studying Higgs inflation and primordial black holes can provide insights into the early stages of the universe and help us understand the fundamental laws of physics that govern our universe. It can also shed light on the formation and evolution of black holes, which are important objects in astrophysics and cosmology. Additionally, the study of primordial black holes could have implications for dark matter and the search for new physics beyond the standard model.

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