Subdiffusive phases in open clean long-range systems

Show simple item record Purkayastha, Archak Saha, Madhumita Agarwalla, Bijay Kumar
dc.coverage.spatial United States of America 2022-01-07T05:41:18Z 2022-01-07T05:41:18Z 2021-12
dc.identifier.citation Purkayastha, Archak; Saha, Madhumita and Agarwalla, Bijay Kumar, “Subdiffusive phases in open clean long-range systems”, Physical Review Letters, DOI: 10.1103/PhysRevLett.127.240601, vol. 127, no. 24, Dec. 2021. en_US
dc.identifier.issn 0031-9007
dc.identifier.issn 1079-7114
dc.description.abstract We show that a one-dimensional ordered fermionic lattice system with power-law-decaying hopping, when connected to two baths at its two ends with different chemical potentials at zero temperature, features two phases showing subdiffusive scaling of conductance with system size. These phases have no analogues in the isolated system (i.e., in absence of the baths) where the transport is perfectly ballistic. In the open system scenario, interestingly, there occurs two chemical-potential-driven subdiffusive to ballistic phase transitions at zero temperature. We discuss how these phase transitions, to our knowledge, are different from all the known nonequilibrium quantum phase transitions. We provide a clear understanding of the microscopic origin of these phases and argue that the subdiffusive phases are robust against the presence of arbitrary number-conserving many-body interactions in the system. These phases showing subdiffusive scaling of conductance with system size in a two-terminal setup are therefore universal properties of all ordered one-dimensional number-conserving fermionic systems with power-law-decaying hopping at zero temperature.
dc.description.statementofresponsibility by Archak Purkayastha, Madhumita Saha, and Bijay Kumar Agarwalla
dc.format.extent vol. 127, no. 24
dc.language.iso en_US en_US
dc.publisher American Physical Society en_US
dc.subject Quantum transport en_US
dc.subject Quantum phase transitions en_US
dc.subject Long-range interactions en_US
dc.subject Nonequilibrium Green's function en_US
dc.title Subdiffusive phases in open clean long-range systems en_US
dc.type Article en_US
dc.relation.journal Physical Review Letters

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