2014

Ward Identities for Hall Transport

Hoyos, Carlos, Kim, Bom Soo, Oz, Yaron

Understand

We derive quantum field theory Ward identities based on linear area preserving and conformal transformations in 2+1 dimensions.

  • The identities relate Hall viscosities, Hall conductivities and the angular momentum.
  • They apply both for relativistic and non relativistic systems, at zero and at finite temperature.
  • We consider systems with or without translation invariance, and introduce an external magnetic field and viscous drag terms.

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