title: Optimal rectification in the ultrastrong coupling regime.
abstract: We study the effect of ultrastrong coupling on the transport of heat. In particular, we present a condition for optimal rectification, i.e., flow of heat in one direction and complete isolation in the opposite direction. We show that the strong-coupling formalism is necessary for correctly describing heat flow in a wide range of parameters, including moderate to low couplings. We present a situation in which the strong-coupling formalism predicts optimal rectification whereas the phenomenological approach predicts no heat flow in any direction, for the same parameter values.
authors.affiliation: Instituto de Física, Universidade Federal de Mato Grosso, Cuiabá MT, Brazil.
authors.forename: T
authors.initials: T
authors.lastname: Werlang
authors.affiliation: Instituto de Física, Universidade Federal de Mato Grosso, Cuiabá MT, Brazil.
authors.forename: M A
authors.initials: MA
authors.lastname: Marchiori
authors.affiliation: Instituto de Física, Universidade Federal de Mato Grosso, Cuiabá MT, Brazil.
authors.forename: M F
authors.initials: MF
authors.lastname: Cornelio
authors.affiliation: Instituto de Física, Universidade Federal de Mato Grosso, Cuiabá MT, Brazil.
authors.forename: D
authors.initials: D
authors.lastname: Valente
mesh_terms: D006358:Hot Temperature; D008962:Models, Theoretical; D011789:Quantum Theory