Antimatter emits the same electromagnetic spectrum as normal matter and would look identical visually.
According to quantum theory and experimental spectroscopy on antihydrogen, antimatter exhibits the same energy levels, spectral lines, and electromagnetic interactions as normal matter.
The retrieved papers provide extensive empirical evidence from CERN and other leading facilities showing that antihydrogen shares the same spectral lines (such as the 1S-2S transition), fine structure, and hyperfine splitting as ordinary hydrogen, confirming that antimatter emits the same electromagnetic spectrum as normal matter.
Ahmadi M, Alves BXR, Baker CJ, Bertsche W, Capra A, Carruth C, Cesar CL, Charlton M, Cohen S, Collister R, Eriksson S, Evans A, Evetts N, Fajans J, Friesen T, Fujiwara MC, Gill DR, Hangst JS, Hardy WN, Hayden ME, Isaac CA, Johnson MA, Jones JM, Jones SA, Jonsell S, Khramov A, Knapp P, Kurchaninov L, Madsen N, Maxwell D, McKenna JTK, Menary S, Momose T, Munich JJ, Olchanski K, Olin A, Pusa P, Rasmussen CØ, Robicheaux F, Sacramento RL, Sameed M, Sarid E, Silveira DM, Stutter G, So C, Tharp TD, Thompson RI, van der Werf DP, Wurtele JS. Characterization of the 1S-2S transition in antihydrogen.. 2018. https://doi.org/10.1038/s41586-018-0017-2
Demonstrates that antihydrogen has energy levels and spectral lines consistent with hydrogen to high precision, supporting identical electromagnetic emission spectra.
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Baker CJ, Bertsche W, Capra A, Carruth C, Cesar CL, Charlton M, Christensen A, Collister R, Mathad AC, Eriksson S, Evans A, Evetts N, Fajans J, Friesen T, Fujiwara MC, Gill DR, Grandemange P, Granum P, Hangst JS, Hardy WN, Hayden ME, Hodgkinson D, Hunter E, Isaac CA, Johnson MA, Jones JM, Jones SA, Jonsell S, Khramov A, Knapp P, Kurchaninov L, Madsen N, Maxwell D, McKenna JTK, Menary S, Michan JM, Momose T, Mullan PS, Munich JJ, Olchanski K, Olin A, Peszka J, Powell A, Pusa P, Rasmussen CØ, Robicheaux F, Sacramento RL, Sameed M, Sarid E, Silveira DM, Starko DM, So C, Stutter G, Tharp TD, Thibeault A, Thompson RI, van der Werf DP, Wurtele JS. Laser cooling of antihydrogen atoms.. 2021. https://doi.org/10.1038/s41586-021-03289-6
Shows successful laser manipulation and spectroscopy of antihydrogen transitions, confirming its expected spectroscopic properties.
Investigation of the fine structure of antihydrogen.. 2020. https://doi.org/10.1038/s41586-020-2006-5
Confirms fine structure and Lamb shift measurements in antihydrogen match quantum electrodynamics predictions for normal matter.
Akbari R, de Araujo Azevedo LO, Baker CJ, Bertsche W, Bhatt NM, Bonomi G, Capra A, Carli I, L Cesar C, Charlton M, Cridland Mathad A, Del Vincio A, Duque Quiceno D, Eriksson S, Evans A, Fajans J, Friesen T, Fujiwara MC, Golino LM, Gomes Gonçalves MB, Hangst JS, Hayden ME, Heidari P, Hodgkinson D, Isaac CA, Jones SA, Jonsell S, Madsen N, Marshall VR, McKenna JTK, Momose T, Nauta J, Oliveira AN, Powell A, Rasmussen CØ, Robertson-Brown T, Robicheaux F, Sacramento RL, Sarid E, Schoonwater J, Silveira DM, Singh J, Smith G, So C, Stracka S, Suh J, Swadling AG, Tharp TD, Thompson KA, Thompson RI, Thorpe-Woods E, Uribe Jimenez AJ, Urioni M, van de Werf DP, Wilson SG, Woosaree P, Wurtele JS. Four ppm measurement of the antihydrogen ground-state hyperfine splitting.. 2026. https://doi.org/10.1038/s41586-026-10556-x
Reports high-precision measurements of antihydrogen ground-state hyperfine splitting consistent with expectations for normal hydrogen.
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