Dark matter detection using nuclear magnetization in magnet with hyperfine interaction

Misalignment production of vector boson dark matter from axion-SU(2) inflation

“…If this polarization does not change after the structure formation, the scenario predicts daily/annual modulation of the dark matter signals [81]. Since the regions that can be probed from the dark photon absorption by various materials [82][83][84][85][86][87][88][89][90][91][92] and in the experiments, Super-CDMS [84], LAMPOST [93], BREAD [94] (Dish-antenna experiment [95]), MADMAX [96], ALPHA [96], Dark E-field [97] and light shining through the wall experiments [98][99][100][101] is in the range of the post-inflation scenario (see figure 3), the discovery of the hidden photon in them, together with the dark radiation of ∆N eff = O(0.1) is another smoking-gun signal of the scenario.…”

“…The kinetic mixing scales as f −2 and can be probed by future experiments and observations depending on the value of f . Interestingly, the predicted kinetic mixing in the region of the post-inflationary scenario may be within reach of future experiments searching for dark photon absorption by various materials [82][83][84][85][86][87][88][89][90][91][92]. This can be also probed in LAMPOST [93], BREAD [94] (Dish-antenna experiment [95]), MADMAX [96], ALPHA [96], and Dark E-field [97].…”

Physical signatures of fermion-coupled axion dark matter

“…This process has been well-studied for non-spin-ordered targets, such as noble liquids [75-77, 79, 86], semiconductors [85][86][87]165], and spin-orbit coupled materials [88], which target axions of mass m a ≳ 10 eV, 1 eV, and 1 meV, respectively. 3 In spin-polarized targets, electron-coupled axion dark matter can generate a wider range of excitations, such as meV-scale phonons [89] and magnons [61,72], electronic transitions between Zeeman-split levels [57], and "nuclear magnons" in materials with strong hyperfine interactions [73].…”

“…Furthermore, the magnetization current discussed in section 3.2 also exists for nucleon couplings, but is suppressed by the small magnitude of nuclear magnetic dipole moments. However, both of these issues may be alleviated in materials with strong hyperfine interactions between nuclear and electronic spins [73].…”

“…At higher axion masses, axion absorption can JHEP05(2024)314 induce spin-flip transitions in atoms [57][58][59][60] or excite in-medium magnons [61,62]. In the µeV − meV mass range, several experiments [63][64][65][66][67][68][69][70][71][72][73] search for magnon absorption by placing a magnetic sample in a cavity, thereby mixing the magnon with a cavity mode so that it can be read out as a photon. These efforts, which we term "ferromagnetic haloscopes," leverage existing expertise in cavity magnonics.…”