Theory of Magnetic Monopoles and Electric-Magnetic Duality: A Prelude to S-Duality

نویسنده

  • JUN S. SONG
چکیده

Charges are often called the coupling constants because their strength determines the coupling, or interaction, strength with the corresponding fields. As we shall see shortly in greater detail, there is a striking symmetry between electric and magnetic fields in our description of electromagnetism. That is, the equations governing the dynamics of the electric and magnetic fields are unchanged when the fields are exchanged. For example, the energy density of electromagnetic fields3 is

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تاریخ انتشار 1996