2022
DOI: 10.1103/physrevd.106.035025
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Mirror neutron stars

Abstract: The fundamental nature of dark matter is entirely unknown. A compelling candidate is Twin Higgs mirror matter, invisible hidden-sector cousins of the Standard Model particles and forces. This predicts mirror neutron stars made entirely of mirror nuclear matter. We find their structure using realistic equations of state, robustly modified based on first-principle quantum chromodynamic calculations, for the first time. This allows us to predict their gravitational wave signals, demonstrating an impressive discov… Show more

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Cited by 28 publications
(31 citation statements)
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“…If dark matter is more similar than not to baryonic matter, the dark sector may host a variety of new, interacting particles that give rise to phenomena as rich and diverse as the astrophysical structures of luminous matter. In particular, if the dark matter can efficiently dissipate its kinetic energy, then dark matter itself can collapse to form compact objects such as dark black holes (DBH; D' Amico et al 2018;Shandera et al 2018;Chang et al 2019;Choquette et al 2019;Latif et al 2019), dark white dwarfs (Ryan & Radice 2022), or dark neutron stars (Hippert et al 2022).…”
Section: Introductionmentioning
confidence: 99%
“…If dark matter is more similar than not to baryonic matter, the dark sector may host a variety of new, interacting particles that give rise to phenomena as rich and diverse as the astrophysical structures of luminous matter. In particular, if the dark matter can efficiently dissipate its kinetic energy, then dark matter itself can collapse to form compact objects such as dark black holes (DBH; D' Amico et al 2018;Shandera et al 2018;Chang et al 2019;Choquette et al 2019;Latif et al 2019), dark white dwarfs (Ryan & Radice 2022), or dark neutron stars (Hippert et al 2022).…”
Section: Introductionmentioning
confidence: 99%
“…This is in contrast to other solutions to the hierarchy problem like TeV-scale supersymmetry, which predicts large LHC signals due to strong production cross sections for new particles, like stops and gluinos [40]. Additionally, because mirror matter contains multiple species that are strongly interacting, it is possible for mirror matter to clump together to form mirror neutron stars (MNSs) [29]. MNSs were found to be very similar to SM NSs, except that they are significantly smaller, with masses M ∼ (0.5 − 1)M and radii R ∼ (4 − 8) km [29].…”
Section: Introductionmentioning
confidence: 90%
“…In recent years, however, the possibility of complex, strongly self-interacting dark matter candidates has been suggested [26][27][28] and the consequence for compact objects explored [29,30]. Specifically, mirror matter [31][32][33][34][35] within the mirror Twin Higgs model [27,28,[35][36][37] is a nearly identical copy of the SM in its matter content and gauge interaction, except that the masses of fundamental particles are scaled up by a factor f /v, where f and v are vacuum expectation values of SM and mirror-sector Higgs fields, respectively.…”
Section: Introductionmentioning
confidence: 99%
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