title: Exchange fluctuation theorem for heat transport between multiterminal harmonic systems.
abstract: We study full counting statistics for transferred heat and entropy production between multiterminal systems in absence of a finite junction. The systems are modeled as collections of coupled harmonic oscillators, which are kept at different equilibrium temperatures and are connected via arbitrary time-dependent couplings. Following consistent quantum framework and two-time measurement concept we obtain analytical expressions for the generalized cumulant generating function. We discuss transient and steady-state fluctuation theorems for the transferred quantities. We also address the effect of coupling strength on the exchange fluctuation theorem.
authors.affiliation: Department of Physics and Center for Computational Science and Engineering, National University of Singapore, Singapore 117542, Republic of Singapore and Chemistry Department, University of California, Irvine, California 92697-2025, USA.
authors.forename: Bijay Kumar
authors.initials: BK
authors.lastname: Agarwalla
authors.affiliation: Department of Physics and Center for Computational Science and Engineering, National University of Singapore, Singapore 117542, Republic of Singapore.
authors.forename: Huanan
authors.initials: H
authors.lastname: Li
authors.affiliation: Department of Physics and Center for Computational Science and Engineering, National University of Singapore, Singapore 117542, Republic of Singapore and NUS Graduate School for Integrative Sciences and Engineering, Singapore 117456, Republic of Singapore and Center for Phononics and Thermal Energy Science, Department of Physics, Tongji University, 200092 Shanghai, China.
authors.forename: Baowen
authors.initials: B
authors.lastname: Li
authors.affiliation: Department of Physics and Center for Computational Science and Engineering, National University of Singapore, Singapore 117542, Republic of Singapore.
authors.forename: Jian-Sheng
authors.initials: JS
authors.lastname: Wang