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8 August 2016 to 2 September 2016
Nordita, Stockholm
Europe/Stockholm timezone

Generalized global symmetries, dissipative magnetohydrodynamics, and holography

26 Aug 2016, 16:00
FB53 (Nordita, Stockholm)


Nordita, Stockholm


Prof. Nabil Iqbal (University of Amsterdam)


Just as ordinary global symmetries in quantum field theory are associated with conserved currents that count particle numbers, “generalized” global symmetries are associated with higher-form conserved currents that can be understood as counting higher-dimensional objects such as strings. I will discuss how this idea applies to the long-distance structure of theories of electromagnetism, where a key role is played by a higher-form conserved current that counts the density of magnetic flux lines. I will then use this higher form current to reformulate dissipative magnetohydrodynamics from the point of view of generalized symmetries and effective field theory. I will also discuss the structure of the holographic dual to magnetohydrodynamics, which involves a two-form field propagating in the bulk.

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