Non-Hermitian Kondo effect in ultracold alkaline-earth atoms
M Nakagawa, N Kawakami, M Ueda - Physical review letters, 2018 - APS
We investigate the Kondo effect in an open quantum system, motivated by recent
experiments with ultracold alkaline-earth (-like) atoms. Because of inelastic collisions and …
experiments with ultracold alkaline-earth (-like) atoms. Because of inelastic collisions and …
Controlling the interaction of ultracold alkaline-earth atoms
Ultracold alkaline-earth atoms are used in precision measurements and quantum
simulation. Because of their unique atomic structure, they could enable the study of …
simulation. Because of their unique atomic structure, they could enable the study of …
Efficient method for quantum impurity problems out of equilibrium
We introduce an efficient method to simulate the dynamics of an interacting quantum
impurity coupled to noninteracting fermionic reservoirs. Viewing the impurity as an open …
impurity coupled to noninteracting fermionic reservoirs. Viewing the impurity as an open …
Geometry of variational methods: dynamics of closed quantum systems
We present a systematic geometric framework to study closed quantum systems based on
suitably chosen variational families. For the purpose of (A) real time evolution,(B) excitation …
suitably chosen variational families. For the purpose of (A) real time evolution,(B) excitation …
Nonequilibrium quantum impurity problems via matrix-product states in the temporal domain
Describing a quantum impurity coupled to one or more noninteracting fermionic reservoirs is
a paradigmatic problem in quantum many-body physics. While historically the focus has …
a paradigmatic problem in quantum many-body physics. While historically the focus has …
Complex fixed points of the non-Hermitian Kondo model in a Luttinger liquid
SE Han, DJ Schultz, YB Kim - Physical Review B, 2023 - APS
Non-Hermitian physics in open quantum many-body systems provides novel opportunities
for the discovery of exotic quantum phenomena unexpected in Hermitian systems. A …
for the discovery of exotic quantum phenomena unexpected in Hermitian systems. A …
Cavity-enhanced Kondo effect
In metals containing magnetic impurities, conduction electrons screen the magnetic
impurities and induce the Kondo effect, ie, the enhancement of the electrical resistance at …
impurities and induce the Kondo effect, ie, the enhancement of the electrical resistance at …
Two‐Channel Kondo Physics: From Engineered Structures to Quantum Materials Realizations
S Kirchner - Advanced Quantum Technologies, 2020 - Wiley Online Library
The Kondo effect assumes a central role in condensed matter physics. It describes the
exchange scattering of electrons with a localized moment and occurs in a wide range of …
exchange scattering of electrons with a localized moment and occurs in a wide range of …
Interorbital interactions in an -symmetric Fermi-Fermi mixture
B Abeln, K Sponselee, M Diem, N Pintul, K Sengstock… - Physical Review A, 2021 - APS
We characterize interisotope interorbital interactions between atoms in the S 0 1 ground
state and the P 0 3 metastable state in interacting Fermi-Fermi mixtures of Yb 171 and Yb …
state and the P 0 3 metastable state in interacting Fermi-Fermi mixtures of Yb 171 and Yb …
Solving quantum impurity problems in and out of equilibrium with the variational approach
A versatile and efficient variational approach is developed to solve in-and out-of-equilibrium
problems of generic quantum spin-impurity systems. Employing the discrete symmetry …
problems of generic quantum spin-impurity systems. Employing the discrete symmetry …