Searching for dilaton fields in the Lyman-
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 forest

Hamaide, Louis; Müller, Hendrik; Marsh, David J. E.

doi:10.1103/physrevd.106.123509

Cited by 5 publications

(3 citation statements)

References 106 publications

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“…The combination of these effects makes the couplings between neutrinos and dark matter fields to be averaged out, and the expectation value becomes zero. However, interactions of neutrinos and the oscillating dark matter fields spread the astrophysical neutrino flavour at arrival and they are still detectable [20,32]. Now, we investigate this effect on the flavour triangle of the IceCube astrophysical neutrino flavour.…”

Section: Teppei Katorimentioning

confidence: 94%

“…If we include the time variation of the dark matter field, since the potential is zero on average, one would expect that the dark matter potential will not affect the astrophysical neutrino flavour ratio. However, the time variation of the field adds the smearing feature on the flavour triangle[20,32], and it spreads the predicted flavour ratio distribution in this triangle. The difference between Fig.2and Fig.3means these two models receive different constraints from the astrophysical flavour data.…”

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confidence: 95%

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Ultra-light Dark Matter Limits from Astrophysical Neutrino Flavour

Katori¹,

Argüelles²,

Farrag³

2023

Proceedings of 38th International Cosmic Ray Conference — PoS(ICRC2023)

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The ultra-light dark matter is a new class of dark matter candidates. Unlike traditional dark matter particle candidates, the ultra-light dark matter behaves like a classical field, which saturates the entire Milky Way galaxy with a coherent oscillation. If such dark matter exists and couples with neutrinos, properties of astrophysical neutrinos propagating in the Milky Way would be modified and detectable by neutrino telescopes such as IceCube. Meantime, IceCube looked for quantumgravity-motivated effects from the astrophysical neutrino flavour information. IceCube did not find evidence of new physics, and they set limits on neutrino -Lorentz violating field couplings. Here, we investigate if these results can be applied to limit the ultra-light dark matter couplings with neutrinos. It is found that the strong limits of neutrino-dark matter couplings in low dark matter mass regions can be obtained in this approach.

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Section: Teppei Katorimentioning

confidence: 94%

mentioning

confidence: 95%

Ultra-light Dark Matter Limits from Astrophysical Neutrino Flavour

Katori¹,

Argüelles²,

Farrag³

2023

Proceedings of 38th International Cosmic Ray Conference — PoS(ICRC2023)

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“…Ultra light scalars like the ones considered in this paper could turn up in many ultraviolet completions of the standard model (see e.g. [68][69][70][71] for some recent papers and references therein). If observations can be used to constrain the self-couplings of such scalars, this can go a long way towards uncovering physics which operates at ultra-short distances.…”

Section: Jcap02(2024)044mentioning

confidence: 99%

ULDM self-interactions, tidal effects and tunnelling out of satellite galaxies

Dave,

Goswami

2024

J. Cosmol. Astropart. Phys.

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It is well-known that Dark Matter (DM) inside a satellite galaxy orbiting a host halo experiences a tidal potential. If DM is ultra-light, given its wave-like nature, one expects it to tunnel out of the satellite — if this happens sufficiently quickly, then the satellite will not survive over cosmological timescales, severely constraining this dark matter model. In this paper, we study the effects of the inevitable quartic self-interaction of scalar Ultra-Light Dark Matter (ULDM) on the lifetimes of satellite galaxies by looking for quasi-stationary solutions with outgoing wave boundary conditions. For a satellite with some known core mass and orbital period, we find that, attractive (repulsive) self-interactions decrease (increase) the rate of tunnelling of DM out of it. In particular, for satellite galaxies with core mass ∼𝒪(107–108) M⊙ and orbital period ∼𝒪(1) Gyr, one can impose constraints on the strength of self-interactions as small as λ∼𝒪(10-92). For instance, for ULDM mass m = 10-22 eV, the existence of the Fornax dwarf galaxy necessitates attractive self-interactions with λ≲ -2.12 × 10-91.

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Cosmologically varying kinetic mixing

Gan,

Liu

2023

J. High Energ. Phys.

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The portal connecting the invisible and visible sectors is one of the most natural explanations of the dark world. However, the early-time dark matter production via the portal faces extremely stringent late-time constraints. To solve such tension, we construct the scalar-controlled kinetic mixing varying with the ultralight CP-even scalar’s cosmological evolution. To realize this and eliminate the constant mixing, we couple the ultralight scalar within 10−33eV ≲ m0 ≪ eV with the heavy doubly charged messengers and impose the ℤ2 symmetry under the dark charge conjugation. Via the varying mixing, the keV – MeV dark photon dark matter is produced through the early-time freeze-in when the scalar is misaligned from the origin and free from the late-time exclusions when the scalar does the damped oscillation and dynamically sets the kinetic mixing. We also find that the scalar-photon coupling emerges from the underlying physics, which changes the cosmological history and provides the experimental targets based on the fine-structure constant variation and the equivalence principle violation. To ensure the scalar naturalness, we discretely re-establish the broken shift symmetry by embedding the minimal model into the ℤN-protected model. When N ~ 10, the scalar’s mass quantum correction can be suppressed much below 10−33eV.

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Searching for dilaton fields in the Lyman- α forest

Cited by 5 publications

References 106 publications

Ultra-light Dark Matter Limits from Astrophysical Neutrino Flavour

Ultra-light Dark Matter Limits from Astrophysical Neutrino Flavour

ULDM self-interactions, tidal effects and tunnelling out of satellite galaxies

Cosmologically varying kinetic mixing

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