Coupled activity-current fluctuations in open quantum systems under strong symmetries

  title={Coupled activity-current fluctuations in open quantum systems under strong symmetries},
  author={Daniel Manzano and Mario Mart{\'i}nez-Garc{\'i}a and Pablo I. Hurtado},
  journal={New Journal of Physics},
Strong symmetries in open quantum systems lead to broken ergodicity and the emergence of multiple degenerate steady states. From a quantum jump (trajectory) perspective, the appearance of multiple steady states is related to underlying dynamical phase transitions (DPTs) at the fluctuating level, leading to a dynamical coexistence of different transport channels classified by symmetry. In this paper we investigate how strong symmetries affect both the transport properties and the activity… 

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