23 citations · 40 across the 5 of their papers we have counts for
5 papers
Functional Renormalization Group treatment of the 0.7-analog in quantum point contacts
Lukas Weidinger, Christian Schmauder, Dennis H. Schimmel +1
We use a recently developed fRG method (extendend Coupled-Ladder Approximation) to study the 0.7-analog in quantum point contacts, arising at the crossing of the 1st and 2nd band a…
Keldysh Derivation of Oguri's Linear Conductance Formula for Interacting Fermions
Jan Heyder, Florian Bauer, Dennis Schimmel +1
We present a Keldysh-based derivation of a formula, previously obtained by Oguri using the Matsubara formalisum, for the linear conductance through a central, interacting region co…
Spin fluctuations in the 0.7-anomaly in quantum point contacts
Dennis H. Schimmel, Benedikt Bruognolo, Jan von Delft
It has been argued that the 0.7 anomaly in quantum point contacts (QPCs) is due to an enhanced density of states at the top of the QPC-barrier (van Hove ridge), which strongly enha…
Low Energy Properties of the Kondo chain in the RKKY regime
D. Schimmel, A. M. Tsvelik, O. M. Yevtushenko
We study the Kondo chain in the regime of high spin concentration where the low energy physics is dominated by the Ruderman-Kittel-Kasuya-Yosida (RKKY) interaction. As has been rec…
Vacuum Persistence in Fierz-Pauli Theory on a Curved Background
Sungmin Hwang, Dennis Schimmel
By explicitly constructing the Hilbert space, Higuchi showed that there is a lower bound on the mass of a minimally-coupled free spin-2 field on a curved background \cite{HiguchiBo…