Posts
New paper: Criticality in …
This paper considers thermal transport between two reservoirs coupled by a quantum Ising chain, as a model for non-equilibrium physics induced in quantum-critical many-body systems. By deriving rate equations from exact expressions for the quasiparticle pairs generated during transport, it finds …
New paper: …
For the multi-mode Dicke model in a transport setting that shows collective boson transmissions, this paper constructs an equation of motion for the cumulant generating function directly, rather than starting from the full master equation. Approximating the resulting system at the level of the …
New paper: Counting …
Photons transmitted through a medium of many radiators can show cooperative effects that go beyond simply adding up independent contributions. Using methods from quantum transport theory, this paper finds a cross-over in how the transmitted current scales with the number of radiators — from linear …
New paper: Speed of …
At sufficiently low reservoir temperatures, an open quantum system coupled weakly to its environment is known to relax toward its ground state. This paper looks at how fast that relaxation actually happens within the Born-Markov-secular approximation, where the system settles into a Gibbs state at …