i-SPin: An integrator for multicomponent Schrödinger-Poisson systems with self-interactions

Jain, Mudit; Amin, Mustafa A.

doi:10.48550/arxiv.2211.08433

Cited by 3 publications

(5 citation statements)

References 64 publications

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“…However, as we argued above based on equipartition, an elliptical motion of the vector field is what one should expect. Nevertheless, we note that a preference for linear (circular) polarization could be generated by allowing for a non-gravitational attractive (repulsive) self-interaction [72][73][74]. While these works argue for such a preference in isolated soliton-like configurations, whether a significant preference for linear (circular) polarization within each coherence patch can be achieved dynamically remains to be seen.…”

Section: Jcap06(2024)050mentioning

confidence: 84%

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Vector wave dark matter and terrestrial quantum sensors

Amaral,

Jain,

Amin

et al. 2024

J. Cosmol. Astropart. Phys.

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(Ultra)light spin-1 particles — dark photons — can constitute all of dark matter (DM) and have beyond Standard Model couplings. This can lead to a coherent, oscillatory signature in terrestrial detectors that depends on the coupling strength. We provide a signal analysis and statistical framework for inferring the properties of such DM by taking into account (i) the stochastic and (ii) the vector nature of the underlying field, along with (iii) the effects due to the Earth's rotation. Owing to equipartition, on time scales shorter than the coherence time the DM field vector typically traces out a fixed ellipse. Taking this ellipse and the rotation of the Earth into account, we highlight a distinctive three-peak signal in Fourier space that can be used to constrain DM coupling strengths. Accounting for all three peaks, we derive latitude-independent constraints on such DM couplings, unlike those stemming from single-peak studies. We apply our framework to the search for ultralight B - L DM using optomechanical sensors, demonstrating the ability to delve into previously unprobed regions of this DM candidate's parameter space.

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Section: Jcap06(2024)050mentioning

confidence: 84%

“…Using codes based on the split-Fourier technique [74,[100][101][102], we have performed simulations of the Schrödinger-Poisson vector system [31,65,103] (physical space version of eq. (A.12)):…”

Section: A2 Equipartition Between Longitudinal and Transverse Modesmentioning

confidence: 99%

Vector wave dark matter and terrestrial quantum sensors

Amaral,

Jain,

Amin

et al. 2024

J. Cosmol. Astropart. Phys.

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show abstract

“…The most obvious is the generalization of these simulations from two to three and more FDM species. Simulations of three FDM species would allow more direct comparisons with spin-1 fields [39][40][41]. Other directions for immediate future work would further explore the dynamics of two fields.…”

Section: Discussionmentioning

confidence: 99%

“…In particular, a m ∼ 10 −25 eV particle comprising ∼ 10% of the dark matter could have a significant effect on the inferred H 0 , highlighting the relevance of multispecies models [37]. Recent work has explored the possibility of higher-spin ultralight bosonic dark matter and has shown that it can have similar phenomenology to ultralight ALPs [39][40][41]. In fact, it has been shown that in the non-relativistic, non-interacting limit, a single spin-s field is indistinguishable from a set of 2s + 1 scalar fields of identical mass [39].…”

Section: Introductionmentioning

confidence: 99%

Simulations of multi-field ultralight axion-like dark matter

Glennon¹,

Musoke²,

Prescod-Weinstein³

2023

Preprint

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As constraints on ultralight axion-like particles (ALPs) tighten, models with multiple species of ultralight ALP are of increasing interest. We perform simulations of two-ALP models with particles in the currently supported range [1] of plausible masses. The code we modified, UltraDark.jl, not only allows for multiple species of ultralight ALP with different masses, but also different self-interactions and inter-field interactions. This allows us to perform the first three-dimensional simulations of two-field ALPs with self-interactions and inter-field interactions. Our simulations show that having multiple species and interactions introduces different phenomenological effects as compared to a single field, non-interacting scenarios. In particular, we explore the dynamics of solitons. Interacting multi-species ultralight dark matter has different equilibrium density profiles as compared to single-species and/or non-interacting ultralight ALPs. As seen in earlier work [2], attractive interactions tend to contract the density profile while repulsive interactions spread out the density profile. We also explore collisions between solitons comprised of distinct axion species. We observe a lack of interference patterns in such collisions, and that resulting densities depend on the relative masses of the ALPs and their interactions.

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“…In addition to the quantum core of DM halos [267,[322][323][324] and inflaton clusters [332], other applications of the maximum mass of self-gravitating BECs with an attractive self-interaction (like dilute axion stars) [265,290] have been discussed in Refs. [333][334][335][336][337][338][339][340].…”

Section: Introductionmentioning

confidence: 99%

Jeans Instability of Dissipative Self-Gravitating Bose–Einstein Condensates with Repulsive or Attractive Self-Interaction: Application to Dark Matter

Chavanis

2020

Universe

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We study the Jeans instability of an infinite homogeneous dissipative self-gravitating Bose–Einstein condensate described by generalized Gross–Pitaevskii–Poisson equations [Chavanis, P.H. Eur. Phys. J. Plus2017, 132, 248]. This problem has applications in relation to the formation of dark matter halos in cosmology. We consider the case of a static and an expanding universe. We take into account an arbitrary form of repulsive or attractive self-interaction between the bosons (an attractive self-interaction being particularly relevant for the axion). We consider both gravitational and hydrodynamical (tachyonic) instabilities and determine the maximum growth rate of the instability and the corresponding wave number. We study how they depend on the scattering length of the bosons (or more generally on the squared speed of sound) and on the friction coefficient. Previously obtained results (notably in the dissipationless case) are recovered in particular limits of our study.

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i-SPin: An integrator for multicomponent Schrödinger-Poisson systems with self-interactions

Cited by 3 publications

References 64 publications

Vector wave dark matter and terrestrial quantum sensors

Vector wave dark matter and terrestrial quantum sensors

Simulations of multi-field ultralight axion-like dark matter

Jeans Instability of Dissipative Self-Gravitating Bose–Einstein Condensates with Repulsive or Attractive Self-Interaction: Application to Dark Matter

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