出版社：SISSA, Scuola Internazionale Superiore di Studi Avanzati
摘要：Brane actions possess rst and second class constraints that result in local
symmetry. In a larger phase space the symmetry of the D-particle (D0 brane) and
the D1 brane is extended here into a larger symmetry by turning second class constraints
into rst class. Di
erent gauge xings result in di
erent presentations of these systems
while a "unitary" gauge xing of the new symmetry retrieves the original action.
