Searching for axionlike time-dependent cosmic birefringence with data from SPT-3G
International audience Ultralight axionlike particles (ALPs) are compelling dark matter candidates because of their potential to resolve small-scale discrepancies between <math display="inline"><mi mathvariant="normal">Λ</mi><mi>CDM</mi></math>...
Published in: | Physical Review D |
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Main Authors: | , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , |
Other Authors: | , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
HAL CCSD
2022
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Subjects: | |
Online Access: | https://hal.science/hal-03632659 https://doi.org/10.1103/PhysRevD.106.042011 |
Summary: | International audience Ultralight axionlike particles (ALPs) are compelling dark matter candidates because of their potential to resolve small-scale discrepancies between <math display="inline"><mi mathvariant="normal">Λ</mi><mi>CDM</mi></math> predictions and cosmological observations. Axion-photon coupling induces a polarization rotation in linearly polarized photons traveling through an ALP field; thus, as the local ALP dark matter field oscillates in time, distant static polarized sources will appear to oscillate with a frequency proportional to the ALP mass. We use observations of the cosmic microwave background from SPT-3G, the current receiver on the South Pole Telescope, to set upper limits on the value of the axion-photon coupling constant <math display="inline"><msub><mi>g</mi><mrow><mi>ϕ</mi><mi>γ</mi></mrow></msub></math> over the approximate mass range <math display="inline"><msup><mn>10</mn><mrow><mo>-</mo><mn>22</mn></mrow></msup><mi>–</mi><msup><mn>10</mn><mrow><mo>-</mo><mn>19</mn></mrow></msup><mtext> </mtext><mtext> </mtext><mi>eV</mi></math>, corresponding to oscillation periods from 12 hours to 100 days. For periods between 1 and 100 days (<math display="inline"><mn>4.7</mn><mo>×</mo><msup><mn>10</mn><mrow><mo>-</mo><mn>22</mn></mrow></msup><mtext> </mtext><mtext> </mtext><mi>eV</mi><mo>≤</mo><msub><mi>m</mi><mi>ϕ</mi></msub><mo>≤</mo><mn>4.7</mn><mo>×</mo><msup><mn>10</mn><mrow><mo>-</mo><mn>20</mn></mrow></msup><mtext> ... |
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