Bounds on very weakly interacting ultra light scalar and pseudoscalar dark matter from quantum gravity

Abstract In this paper we consider very weakly interacting and ultra light scalar and pseudoscalar dark matter candidates. We show that quantum gravity has important implications for such models and that the masses of the singlet scalar and pseudoscalar fields must be heavier than $$3\times 10^{-3}$$3×10-3 eV. However, if they are gauged, their masses could be much lighter and as light as $$10^{-22}\, \mathrm{eV}$$10-22eV. The existence of new gauge forces in the dark matter sector can thus be probed by atomic clocks or quantum sensors experiments.

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Where is particle physics going?

International Journal of Modern Physics A ◽

10.1142/s0217751x17460010 ◽

2017 ◽

Vol 32 (34) ◽

pp. 1746001 ◽

Cited By ~ 1

Author(s):

John Ellis

Keyword(s):

Dark Matter ◽

Quantum Gravity ◽

Particle Physics ◽

New Physics ◽

Beyond The Standard Model ◽

The Standard Model ◽

Cosmological Inflation ◽

The Masses ◽

George Harrison ◽

Experimental Strategies

The answer to the question in the title is: in search of new physics beyond the Standard Model, for which there are many motivations, including the likely instability of the electroweak vacuum, dark matter, the origin of matter, the masses of neutrinos, the naturalness of the hierarchy of mass scales, cosmological inflation and the search for quantum gravity. So far, however, there are no clear indications about the theoretical solutions to these problems, nor the experimental strategies to resolve them. It makes sense now to prepare various projects for possible future accelerators, so as to be ready for decisions when the physics outlook becomes clearer. Paraphrasing George Harrison, “If you don’t yet know where you’re going, any road may take you there.”

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Implications of quantum gravity for dark matter

International Journal of Modern Physics D ◽

10.1142/s0218271821420049 ◽

2021 ◽

pp. 2142004

Author(s):

Xavier Calmet ◽

Folkert Kuipers

Keyword(s):

Dark Matter ◽

Lower Bound ◽

Quantum Gravity ◽

Upper Bound ◽

Fifth Force ◽

Fermion Masses ◽

Age Of The Universe ◽

The Masses ◽

The Universe ◽

Matter Fields

In this essay, we show that quantum gravity and the spin-statistics theorem have very interesting consequences for dark matter candidates. Quantum gravity can lead to fifth force type interactions that lead to a lower bound on the masses of bosonic candidates. In the case of fermions, the spin-statistics theorem leads to a lower bound on fermion masses. For both bosonic and fermionic dark matter candidates, quantum gravity leads to a decay of dark matter particles. A comparison of their lifetime with the age of the universe leads to an upper bound on their masses. For singlet scalar dark matter fields, we find [Formula: see text].

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Search for weakly interacting massive dark matter particles: state of the art and prospects

Physics-Uspekhi ◽

10.3367/ufne.2020.11.038872 ◽

2020 ◽

Author(s):

Andrei B. Aleksandrov ◽

Aigerim B. Dashkina ◽

Nina S. Konovalova ◽

Natal'ya M. Okat'eva ◽

Natal'ya G. Polukhina ◽

...

Keyword(s):

Dark Matter ◽

State Of The Art ◽

Weakly Interacting

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Detecting Cold Dark Matter Candidates

Symposium - International Astronomical Union ◽

10.1017/s0074180900150703 ◽

1987 ◽

Vol 117 ◽

pp. 490-490

Author(s):

A. K. Drukier ◽

K. Freese ◽

D. N. Spergel

Keyword(s):

Dark Matter ◽

Cold Dark Matter ◽

Galactic Halo ◽

Dark Matter Particle ◽

Low Energy ◽

The Sun ◽

Background Rate ◽

System Noise ◽

Weakly Interacting ◽

Massive Neutrinos

We consider the use of superheated superconducting colloids as detectors of weakly interacting galactic halo candidate particles (e.g. photinos, massive neutrinos, and scalar neutrinos). These low temperature detectors are sensitive to the deposition of a few hundreds of eV's. The recoil of a dark matter particle off of a superheated superconducting grain in the detector causes the grain to make a transition to the normal state. Their low energy threshold makes this class of detectors ideal for detecting massive weakly interacting halo particles.We discuss realistic models for the detector and for the galactic halo. We show that the expected count rate (≈103 count/day for scalar and massive neutrinos) exceeds the expected background by several orders of magnitude. For photinos, we expect ≈1 count/day, more than 100 times the predicted background rate. We find that if the detector temperature is maintained at 50 mK and the system noise is reduced below 5 × 10−4 flux quanta, particles with mass as low as 2 GeV can be detected. We show that the earth's motion around the Sun can produce a significant annual modulation in the signal.

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Effective Scalar Potential in Asymptotically Safe Quantum Gravity

Universe ◽

10.3390/universe7020045 ◽

2021 ◽

Vol 7 (2) ◽

pp. 45

Author(s):

Christof Wetterich

Keyword(s):

Quantum Gravity ◽

Top Quark ◽

Particle Physics ◽

Scalar Potential ◽

Scalar Fields ◽

The Standard Model ◽

Scaling Potential ◽

Realistic Description ◽

The Masses ◽

Dynamical Dark Energy

We compute the effective potential for scalar fields in asymptotically safe quantum gravity. A scaling potential and other scaling functions generalize the fixed point values of renormalizable couplings. The scaling potential takes a non-polynomial form, approaching typically a constant for large values of scalar fields. Spontaneous symmetry breaking may be induced by non-vanishing gauge couplings. We strengthen the arguments for a prediction of the ratio between the masses of the top quark and the Higgs boson. Higgs inflation in the standard model is unlikely to be compatible with asymptotic safety. Scaling solutions with vanishing relevant parameters can be sufficient for a realistic description of particle physics and cosmology, leading to an asymptotically vanishing “cosmological constant” or dynamical dark energy.

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Formation of massive globular clusters with dark matter and its implication on dark matter annihilation

Monthly Notices of the Royal Astronomical Society Letters ◽

10.1093/mnrasl/slaa089 ◽

2020 ◽

Vol 496 (1) ◽

pp. L70-L74

Author(s):

Henriette Wirth ◽

Kenji Bekki ◽

Kohei Hayashi

Keyword(s):

Dark Matter ◽

Observational Studies ◽

Globular Clusters ◽

Galactic Halo ◽

Dwarf Galaxies ◽

Large Range ◽

Dark Matter Annihilation ◽

Central Regions ◽

Γ Ray ◽

The Masses

ABSTRACT Recent observational studies of γ-ray emission from massive globular clusters (GCs) have revealed possible evidence of dark matter (DM) annihilation within GCs. It is, however, still controversial whether the emission comes from DM or from millisecond pulsars. We here present the new results of numerical simulations, which demonstrate that GCs with DM can originate from nucleated dwarfs orbiting the ancient Milky Way. The simulated stripped nuclei (i.e. GCs) have the central DM densities ranging from 0.1 to several M⊙ pc−3, depending on the orbits and the masses of the host dwarf galaxies. However, GCs born outside the central regions of their hosts can have no/little DM after their hosts are destroyed and the GCs become the Galactic halo GCs. These results suggest that only GCs originating from stellar nuclei of dwarfs can possibly have DM. We further calculate the expected γ-ray emission from these simulated GCs and compare them to observations of ω Cen. Given the large range of DM densities in the simulated GCs, we suggest that the recent possible detection of DM annihilation from GCs should be more carefully interpreted.

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Various types of holographic metal/superconductor phase transitions with dark matter sector

International Journal of Modern Physics D ◽

10.1142/s0218271817500468 ◽

2016 ◽

Vol 26 (06) ◽

pp. 1750046

Author(s):

Yan Peng ◽

Tao Chen ◽

Guohua Liu ◽

Pengwei Ma

Keyword(s):

Phase Transition ◽

Black Hole ◽

Dark Matter ◽

Phase Transitions ◽

Transition Temperature ◽

De Sitter ◽

Holographic Superconductor ◽

Black Hole Background ◽

Critical Phase ◽

Matter Sector

We generalize the holographic superconductor model with dark matter sector by including the Stückelberg mechanism in the four-dimensional anti-de Sitter (AdS) black hole background away from the probe limit. We study effects of the dark matter sector on the [Formula: see text]-wave scalar condensation and find that the dark matter sector affects the critical phase transition temperature and also the order of phase transitions. At last, we conclude that the dark matter sector brings richer physics in this general metal/superconductor system.

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