Giovanni Perosa , Simone Di Mitri , William A. Barletta , Fulvio Parmigiani
{"title":"电动力迟滞电位的多普勒特征","authors":"Giovanni Perosa , Simone Di Mitri , William A. Barletta , Fulvio Parmigiani","doi":"10.1016/j.physo.2023.100136","DOIUrl":null,"url":null,"abstract":"<div><p>The presence of the term <span><math><mfenced><mrow><mi>v</mi><mo>/</mo><mi>c</mi></mrow></mfenced></math></span> that characterizes the electrodynamic retarded potentials, also known as Liénard–Wiechert potentials, is thought to be reminiscent of a Doppler effect. Here, we show that these potentials are consistent with the Doppler shifted electromagnetic (e.m.) field generated by a charge moving along a generic trajectory. Of course, the retarded potentials derived here are formally the same as those reported in the current literature. Nonetheless, this work sheds a new light on the origin of the electrodynamics retarded fields, offering a direct physical interpretation of the term <span><math><mfenced><mrow><mi>v</mi><mo>/</mo><mi>c</mi></mrow></mfenced></math></span> characterizing the related potentials and making more evident the geometry underlying the radiation field associated to a moving charge. This could inspire new visions for calculating radiation and fields from accelerated charges, including particle physics, Cherenkov radiation and electromagnetic fields in curved space–time.</p></div>","PeriodicalId":36067,"journal":{"name":"Physics Open","volume":"14 ","pages":"Article 100136"},"PeriodicalIF":0.0000,"publicationDate":"2023-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Doppler signature in electrodynamic retarded potentials\",\"authors\":\"Giovanni Perosa , Simone Di Mitri , William A. Barletta , Fulvio Parmigiani\",\"doi\":\"10.1016/j.physo.2023.100136\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p>The presence of the term <span><math><mfenced><mrow><mi>v</mi><mo>/</mo><mi>c</mi></mrow></mfenced></math></span> that characterizes the electrodynamic retarded potentials, also known as Liénard–Wiechert potentials, is thought to be reminiscent of a Doppler effect. Here, we show that these potentials are consistent with the Doppler shifted electromagnetic (e.m.) field generated by a charge moving along a generic trajectory. Of course, the retarded potentials derived here are formally the same as those reported in the current literature. Nonetheless, this work sheds a new light on the origin of the electrodynamics retarded fields, offering a direct physical interpretation of the term <span><math><mfenced><mrow><mi>v</mi><mo>/</mo><mi>c</mi></mrow></mfenced></math></span> characterizing the related potentials and making more evident the geometry underlying the radiation field associated to a moving charge. This could inspire new visions for calculating radiation and fields from accelerated charges, including particle physics, Cherenkov radiation and electromagnetic fields in curved space–time.</p></div>\",\"PeriodicalId\":36067,\"journal\":{\"name\":\"Physics Open\",\"volume\":\"14 \",\"pages\":\"Article 100136\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"2023-02-01\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Physics Open\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/S2666032623000017\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q2\",\"JCRName\":\"Physics and Astronomy\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Physics Open","FirstCategoryId":"1085","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S2666032623000017","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"Physics and Astronomy","Score":null,"Total":0}
Doppler signature in electrodynamic retarded potentials
The presence of the term that characterizes the electrodynamic retarded potentials, also known as Liénard–Wiechert potentials, is thought to be reminiscent of a Doppler effect. Here, we show that these potentials are consistent with the Doppler shifted electromagnetic (e.m.) field generated by a charge moving along a generic trajectory. Of course, the retarded potentials derived here are formally the same as those reported in the current literature. Nonetheless, this work sheds a new light on the origin of the electrodynamics retarded fields, offering a direct physical interpretation of the term characterizing the related potentials and making more evident the geometry underlying the radiation field associated to a moving charge. This could inspire new visions for calculating radiation and fields from accelerated charges, including particle physics, Cherenkov radiation and electromagnetic fields in curved space–time.