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We briefly review and update our earlier published model for dark matter consisting of nanometer size bubbles of a new speculated vacuum phase in which some ordinary material, e.g. carbon, is present under high pressure caused by the…

综合物理 · 物理学 2023-03-13 Holger . B. Nielsen , Colin D. Froggatt

We explain both the observation of dark matter by the seasonal variation of the DAMA-LIBRA data and the observation of ``electron recoil'' events at Xenon1T by the SAME dark matter model. This DM is bubbles of a new type of vacuum…

高能物理 - 唯象学 · 物理学 2021-11-23 C. D. Froggatt , H. B. Nielsen

We have worked for some time on a model for dark matter, in which dark matter consists of small bubbles of a new speculated type of vacuum, which are pumped up by some ordinary matter such as diamond, so as to resist the pressure of the…

高能物理 - 唯象学 · 物理学 2023-11-28 H. B. Nielsen , Colin D. Froggatt

We look at our since long studied model for dark matter as being pearls of a speculated new vacuum containing highly compressed ordinary matter, with so much ordinary in it that the content of ordinary matter in the dark matter pearls…

高能物理 - 唯象学 · 物理学 2026-02-10 Colin D. Froggatt , Holger Bech Nielsen

We seek to explain both the seeming observation of dark matter by the seasonal variation of the DAMA-LIBRA data and the observation of "electron recoil" events at Xenon1T in which the liquid Xe scintillator was excited by electrons - in…

高能物理 - 唯象学 · 物理学 2022-03-11 C. D. Froggatt , H. B. Nielsen

We study the 3.55 keV X-ray suspected to arise from dark matter in our model of dark matter consisting of a bubble of a new phase of the vacuum, the surface tension of which keeps ordinary matter under high pressure inside the bubble. We…

高能物理 - 唯象学 · 物理学 2021-02-23 Holger Bech Nielsen , Colin D. Froggatt

We continue our work on a proposal for what dark matter could be, namely that the dark matter consists of essentially macroscopic objects built from ordinary matter. The only element of new physics is that there should exist several types…

高能物理 - 唯象学 · 物理学 2023-05-23 Holger Bech Nielsen , Colin D. Froggatt

We consider theories where dark matter is composed of a thermal relic of weak scale mass, whose couplings to the Standard Model (SM) are however too small to give rise to the observed abundance. Instead, the abundance is set by annihilation…

高能物理 - 唯象学 · 物理学 2016-01-18 Zackaria Chacko , Yanou Cui , Sungwoo Hong , Takemichi Okui

Multiple astrophysical and cosmological observations show that the majority of the matter in the universe is non-luminous. It is not made of known particles, and it is called dark matter. This is one of the few pieces of concrete…

高能物理 - 实验 · 物理学 2020-01-01 Oliver Buchmueller , Caterina Doglioni , Lian-Tao Wang

Our earlier put forward model of dark matter, consisting of cm-size pearls with ordinary matter inside under high pressure and with a mass of order $1.4 *10^8$ kg, is used to explain the mysterious 3.5 keV X-ray line from the galactic…

高能物理 - 唯象学 · 物理学 2020-11-24 Colin D. Froggatt , Holger B. Nielsen

We propose that dark matter consists of collections of atoms encapsulated inside pieces of an alternative vacuum, in which the Higgs field vacuum expectation value is appreciably smaller than in the usual vacuum. The alternative vacuum is…

天体物理学 · 物理学 2007-05-23 C. D. Froggatt , H. B. Nielsen

Dark Matter is one of the most intriguing riddles of modern astrophysics. The Standard Cosmological Model implies that only 4.5% of the mass-energy of the Universe is baryonic matter and the remaining 95% is unknown. Of this remainder, 22%…

天体物理仪器与方法 · 物理学 2010-11-19 Andrzej M. Szelc

Dark matter interactions with massless or very light Standard Model particles, as photons or neutrinos, may lead to a suppression of the matter power spectrum at small scales and of the number of low mass haloes. Bounds on the dark matter…

宇宙学与河外天体物理 · 物理学 2019-01-30 Laura Lopez-Honorez , Olga Mena , Pablo Villanueva-Domingo

Progress in observational cosmology over the past five years has established that the Universe is dominated dynamically by dark matter and dark energy. Both these new and apparently independent forms of matter-energy have properties that…

天体物理学 · 物理学 2009-11-10 J. M. Overduin , P. S. Wesson

Small-scale clumps of dark matter are gravitationally bounded structures that have masses comparable to or lower than stellar masses and consist of noninteracting or weakly interacting dark matter particles. In this paper, the current…

高能天体物理现象 · 物理学 2014-05-12 V. S. Berezinsky , V. I. Dokuchaev , Yu. N. Eroshenko

Dark Matter (DM) is generally assumed to be massive, cold and collisionless from the structure formation point of view. A more correct statement however is that DM indeed experiences collisional damping, but on a scale which is supposed to…

天体物理学 · 物理学 2007-05-23 C. Boehm , H. Mathis , J. Devriendt , J. Silk

The internal structure of the Standard Model implies a natural $\mathbb{Z}_4 \times \mathbb{Z}_3$ discrete gauge symmetry. Cancellation of the corresponding Dai--Freed anomalies requires the introduction of three right-handed neutrinos and…

高能物理 - 唯象学 · 物理学 2026-05-25 Jie Sheng , Tsutomu T. Yanagida , Kairui Zhang

We propose a new class of dark matter models with unusual phenomenology. What is ordinary about our models is that dark matter particles are WIMPs, they are weakly coupled to the Standard Model and have weak scale masses. What is unusual is…

高能物理 - 唯象学 · 物理学 2015-08-05 Manuel A. Buen-Abad , Gustavo Marques-Tavares , Martin Schmaltz

Dark matter is a vital component of the current best model of our universe, $\Lambda$CDM. There are leading candidates for what the dark matter could be (e.g. weakly-interacting massive particles, or axions), but no compelling observational…

宇宙学与河外天体物理 · 物理学 2015-07-06 David M. Jacobs , Glenn D. Starkman , Bryan W. Lynn

The nonbaryonic dark matter of the Universe is assumed to consist of new stable particles. A specific case is possible, when new stable particles bear ordinary electric charge and bind in heavy "atoms" by ordinary Coulomb interaction. Such…

宇宙学与河外天体物理 · 物理学 2015-03-17 Maxim Yu. Khlopov , Andrey G. Mayorov , Evgeny Yu. Soldatov
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