PEI-MING HO2018-09-102018-09-102002-0803702693http://inspirehep.net/record/593583http://scholars.lib.ntu.edu.tw/handle/123456789/297731https://www.scopus.com/inward/record.uri?eid=2-s2.0-0037451855&doi=10.1016%2fS0370-2693%2803%2900278-8&partnerID=40&md5=7f01157b8aa5436dec674e34b5ab76ebIn this Letter we show that the worldline reparametrization for particles with higher derivative interactions appears as a higher-dimensional symmetry, which is generated by a truncated Virasoro algebra. We also argue that for generic nonlocal particle theories the fields on the worldline may be promoted to those living on a two-dimensional worldsheet, and the reparametrization symmetry becomes locally the same as the conformal symmetry. © 2003 Published by Elsevier Science B.V.[SDGs]SDG10article; mathematical analysis; mathematical parameters; mathematics; molecular interaction; quantum theoryjournal article10.1016/S0370-2693(03)00278-82-s2.0-0037451855WOS:000182008800014