273 citations · 963 across the 18 of their papers we have counts for
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cond-mat.mes-hall2010★ 5 cited
Momentum and position detection in nanoelectromechanical systems beyond Born and Markov approximations
Stefan Walter, Björn Trauzettel
We propose and analyze different schemes to probe the quantum nature of nanoelectromechanical systems (NEMS) by a tunnel junction detector. Using the Keldysh technique, we are able…
math-ph2010
Positivity of the two-dimensional Brown-Ravenhall operator
Stefan Walter
We determine the critical coupling of the two-dimensional Brown-Ravenhall operator with Coulomb potential. Boundedness from below has essentially been proven by Bouzouina, whose wo…