Cosmological structure formation and soliton phase transition in fuzzy dark matter with axion self-interactions

被引：24

作者：

Mocz, Philip ^{[1
,2
]}

Fialkov, Anastasia ^{[3
,4
]}

Vogelsberger, Mark ^{[5
]}

Boylan-Kolchin, Michael ^{[6
]}

Chavanis, Pierre-Henri ^{[7
]}

Amin, Mustafa A. ^{[8
]}

Bose, Sownak ^{[9
]}

Dome, Tibor ^{[3
,4
]}

Hernquist, Lars ^{[10
]}

Lancaster, Lachlan ^{[11
,12
]}

Notis, Matthew ^{[1
]}

Painter, Connor ^{[6
]}

Robles, Victor H. ^{[13
]}

Zavala, Jesus ^{[14
]}

机构：

[1] Princeton Univ, Dept Astrophys Sci, 4 Ivy Lane, Princeton, NJ 08544 USA

[2] Lawrence Livermore Natl Lab, 4 Ivy Lane,7000 East Ave, Livermore, CA 94550 USA

[3] Univ Cambridge, Inst Astron, Madingley Rd, Cambridge CB3 0HA, England

[4] Kavli Inst Cosmol, Madingley Rd, Cambridge CB3 0HA, England

[5] MIT, Kavli Inst Astrophys & Space Res, Dept Phys, Cambridge, MA 02139 USA

[6] Univ Texas Austin, Dept Astron, 2515 Speedway,Stop C1400, Austin, TX 78712 USA

[7] Univ Paul Sabatier, Lab Phys Theor, 118 Route Narbonne, F-31062 Toulouse, France

[8] Rice Univ, Phys & Astron Dept, Houston, TX 77005 USA

[9] Univ Durham, Inst Computat Cosmol, Dept Phys, Durham DH1 3LE, England

[10] Harvard Smithsonian Ctr Astrophys, 60 Garden St, Cambridge, MA 02138 USA

[11] Columbia Univ, Dept Astron, 550 W 120th St, New York, NY 10025 USA

[12] Flatiron Inst, Ctr Computat Astrophys, 162 5th Ave, New York, NY 10010 USA

[13] Yale Ctr Astron & Astrophys, Phys Dept, New Haven, CT 06520 USA

[14] Univ Iceland, Sci Inst, Ctr Astrophys & Cosmol, Dunhagi 5, IS-107 Reykjavik, Iceland

来源：

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY | 2023年 / 521卷 / 02期

基金：

英国科研创新办公室; 美国国家科学基金会; 英国科学技术设施理事会;

关键词：

methods: numerical; dark matter; cosmology: theory; LYMAN-ALPHA FOREST; GALAXY FORMATION; QCD AXION; CORE; SIGNATURES; MODEL; BECDM;

D O I：

10.1093/mnras/stad694

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We investigate cosmological structure formation in fuzzy dark matter (FDM) with the attractive self-interaction (SI) with numerical simulations. Such a SI would arise if the FDM boson were an ultra-light axion, which has a strong CP symmetry-breaking scale (decay constant). Although weak, the attractive SI may be strong enough to counteract the quantum 'pressure' and alter structure formation. We find in our simulations that the SI can enhance small-scale structure formation, and soliton cores above a critical mass undergo a phase transition, transforming from dilute to dense solitons.

引用

页码：2608 / 2615

页数：8

共 61 条

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