A Unique Multi-Messenger Signal of QCD Axion Dark Matter Thomas D. P . Edwards, Marco Chianese, Bradley J. Kavanagh, Samaya M. Nissanke, Christoph Weniger 1905.04686 �1
Multi-Messenger Astrophysics is Here 1710.05834 �2 Thomas D. P . Edwards | TAUP 2019 | 1906.05800
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<latexit sha1_base64="hyv9NMRKopdgeZ0BUsAv8VFts=">AB/HicbVBNS8NAEN3Ur1q/oj16WSyCF0tSBT14KHrxWMF+QBvLZrtpl242YXcilLT+FS8eFPHqD/Hmv3Hb5qCtDwYe780wM8+PBdfgON9WbmV1bX0jv1nY2t7Z3bP3Dxo6ShRldRqJSLV8opngktWBg2CtWDES+oI1/eHN1G8+MqV5JO9hFDMvJH3JA04JGKlrF8cdGDAgY3yFXechPXWdSdcuOWVnBrxM3IyUIZa1/7q9CKahEwCFUTrtuvE4KVEAaeCTQqdRLOY0CHps7ahkoRMe+ns+Ak+NkoPB5EyJQHP1N8TKQm1HoW+6QwJDPSiNxX/89oJBJdeymWcAJN0vihIBIYIT5PAPa4YBTEyhFDFza2YDogiFExeBROCu/jyMmlUyu5ZuXJ3XqpeZ3Hk0SE6QifIReoim5RDdURSP0jF7Rm/VkvVjv1se8NWdlM0X0B9bnD9oWk5g=</latexit> <latexit sha1_base64="0EUovG4izrpLH8sBMLSd7kqKAXI=">ACBXicbVDJSgNBEO2Je9yiHvXQGIR4CTNR0GPQizcVzAKZEHo6laRJT8/YXSOES5e/BUvHhTx6j9482/sLAe3BwWP96qoqhfEUh03U8nMze/sLi0vJdXVvf2MxtbVdNlGgOFR7JSNcDZkAKBRUKEea2BhIKEW9M/Hfu0OtBGRusFBDM2QdZXoCM7QSq3c3tDHiAbUl/BLfVDhj3OZHo5KniHrVzeLboT0L/Em5E8meGqlfvw2xFPQlDIJTOm4bkxNlOmUXAJo6yfGIgZ7MuNCxVLATCdfjOiBVdq0E2lbCulE/T6RstCYQRjYzvGV5rc3Fv/zGgl2TpupUHGCoPh0USeRFCM6joS2hQaOcmAJ41rYWynvMc042uCyNgTv98t/SbVU9I6KpevjfPlsFscy2SX7pEA8ckLK5IJckQrh5J48kmfy4jw4T86r8zZtzTizmR3yA87F7yTmBA=</latexit> <latexit sha1_base64="/tGBvz01CSnpOQoq8t7WVJM0RD4=">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</latexit> QCD Axion Dark Matter L = − g 2 s θ • 32 π 2 G µ ν ˜ The strong interaction also admits a CP violating G µ ν term in its Lagrangian • Promoting theta to a field allows the CP-violating term | θ | < 10 − 10 | θ | 6 = O (1) to dynamically reach zero �4 Thomas D. P . Edwards | TAUP 2019 | 1906.05800
<latexit sha1_base64="/tGBvz01CSnpOQoq8t7WVJM0RD4=">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</latexit> <latexit sha1_base64="hf5IqQd+WgKvt9zNsFhCp+MTvSY=">ACAHicbVBNS8NAEJ34WetX1IMHL4tF8GJqlBPUvTisYL9gDaWzXbTLt1Nwu5GKCEX/4oXD4p49Wd489+4aXvQ1gcDj/dmJnx5wp7Tjf1tLyuraemGjuLm1vbNr7+03VZRIQhsk4pFs+1hRzkLa0Exz2o4lxcLntOWPbnK/9UilYlF4r8cx9QehCxgBGsj9exDga6Q6zykZ9UMdQXWQylS2sx6dskpOxOgReLOSAlmqPfsr24/IomgoSYcK9VxnVh7KZaEU6zYjdRNMZkhAe0Y2iIBVeOnkgQydG6aMgkqZCjSbq74kUC6XGwjed+Ylq3svF/7xOoNL2VhnGgakumiIOFIRyhPA/WZpETzsSGYSGZuRWSIJSbaZFY0IbjzLy+SZqXsnpcrdxel2vUsjgIcwTGcgtVqMEt1KEBDJ4hld4s56sF+vd+pi2LlmzmQP4A+vzB96NlVM=</latexit> <latexit sha1_base64="hyv9NMRKopdgeZ0BUsAv8VFts=">AB/HicbVBNS8NAEN3Ur1q/oj16WSyCF0tSBT14KHrxWMF+QBvLZrtpl242YXcilLT+FS8eFPHqD/Hmv3Hb5qCtDwYe780wM8+PBdfgON9WbmV1bX0jv1nY2t7Z3bP3Dxo6ShRldRqJSLV8opngktWBg2CtWDES+oI1/eHN1G8+MqV5JO9hFDMvJH3JA04JGKlrF8cdGDAgY3yFXechPXWdSdcuOWVnBrxM3IyUIZa1/7q9CKahEwCFUTrtuvE4KVEAaeCTQqdRLOY0CHps7ahkoRMe+ns+Ak+NkoPB5EyJQHP1N8TKQm1HoW+6QwJDPSiNxX/89oJBJdeymWcAJN0vihIBIYIT5PAPa4YBTEyhFDFza2YDogiFExeBROCu/jyMmlUyu5ZuXJ3XqpeZ3Hk0SE6QifIReoim5RDdURSP0jF7Rm/VkvVjv1se8NWdlM0X0B9bnD9oWk5g=</latexit> <latexit sha1_base64="8TV2iMYR6fbFjHpDbkBetj+PpYc=">AB/3icbVDLSsNAFL3xWesrKrhxM1gEVyWpgm6EohuXFewDmlAmk0k7dDIJMxOhxC78FTcuFHrb7jzb5y2WjrgYHDOedy75wg5Uxpx/m2lpZXVtfWSxvlza3tnV17b7+lkwS2iQJT2QnwIpyJmhTM81pJ5UxwGn7WB4M/HbD1Qqloh7PUqpH+O+YBEjWBupZx963IRDjK6QF0lM8sE4j8m4Z1ecqjMFWiRuQSpQoNGzv7wIVlMhSYcK9V1nVT7OZaEU7HZS9TNMVkiPu0a6jAMV+Pr1/jE6MEqIokeYJjabq74kcx0qN4sAkY6wHat6biP953UxHl37ORJpKshsUZRxpBM0KQOFTFKi+cgQTCQztyIywKYGbSormxLc+S8vklat6p5Va3fnlfp1UcJjuAYTsGFC6jDLTSgCQe4Rle4c16sl6sd+tjFl2yipkD+APr8weuw5Xl</latexit> <latexit sha1_base64="0EUovG4izrpLH8sBMLSd7kqKAXI=">ACBXicbVDJSgNBEO2Je9yiHvXQGIR4CTNR0GPQizcVzAKZEHo6laRJT8/YXSOES5e/BUvHhTx6j9482/sLAe3BwWP96qoqhfEUh03U8nMze/sLi0vJdXVvf2MxtbVdNlGgOFR7JSNcDZkAKBRUKEea2BhIKEW9M/Hfu0OtBGRusFBDM2QdZXoCM7QSq3c3tDHiAbUl/BLfVDhj3OZHo5KniHrVzeLboT0L/Em5E8meGqlfvw2xFPQlDIJTOm4bkxNlOmUXAJo6yfGIgZ7MuNCxVLATCdfjOiBVdq0E2lbCulE/T6RstCYQRjYzvGV5rc3Fv/zGgl2TpupUHGCoPh0USeRFCM6joS2hQaOcmAJ41rYWynvMc042uCyNgTv98t/SbVU9I6KpevjfPlsFscy2SX7pEA8ckLK5IJckQrh5J48kmfy4jw4T86r8zZtzTizmR3yA87F7yTmBA=</latexit> QCD Axion Dark Matter L = − g 2 s θ • 32 π 2 G µ ν ˜ The strong interaction also admits a CP violating G µ ν term in its Lagrangian • Promoting theta to a field allows the CP-violating term | θ | < 10 − 10 | θ | 6 = O (1) to dynamically reach zero λ = h m > 10 − 7 eV mc 1904.12803 �4 Thomas D. P . Edwards | TAUP 2019 | 1906.05800
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