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Título:
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Topological heat transport and symmetry-protected boson currents
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Autores:
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Rivas, Ángel ;
Martín Delgado, Miguel Ángel
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Tipo de documento:
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texto impreso
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Editorial:
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Nature Publishing Group, 2017-07-25
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Dimensiones:
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application/pdf
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Nota general:
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cc_by
info:eu-repo/semantics/openAccess
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Idiomas:
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Palabras clave:
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Estado = Publicado
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Materia = Ciencias: Física: Física-Modelos matemáticos
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Tipo = Artículo
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Resumen:
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The study of non-equilibrium properties in topological systems is of practical and fundamental importance. Here, we analyze the stationary properties of a two-dimensional bosonic Hofstadter lattice coupled to two thermal baths in the quantum open-system formalism. Novel phenomena appear like chiral edge heat currents that are the out-of-equilibrium counterparts of the zero-temperature edge currents. They support a new concept of dissipative symmetry-protection, where a set of discrete symmetries protects topological heat currents, difering from the symmetry-protection devised in closed systems and zero-temperature. Remarkably, one of these currents fows opposite to the decreasing external temperature gradient. As the starting point, we consider the case of a single external reservoir already showing prominent results like thermal erasure efects and topological thermal currents. Our results are experimentally accessible with platforms like photonics systems and optical lattices.
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En línea:
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https://eprints.ucm.es/45066/1/Mart%C3%ADn%20Delgado%20Alc%C3%A1ntara%20M%C3%81%20112%20LIBRE%2BCC.pdf
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