23 citations · 35 across the 10 of their papers we have counts for
10 papers
On the number of representations providing noiseless subsystems
William Gordon Ritter
This paper studies the combinatoric structure of the set of all representations, up to equivalence, of a finite-dimensional semisimple Lie algebra. This has intrinsic interest as a…
Lie Algebras and Suppression of Decoherence in Open Quantum Systems
William Gordon Ritter
Since there are many examples in which no decoherence-free subsystems exist (among them all cases where the error generators act irreducibly on the system Hilbert space), it is of…
Quantum Channels and Representation Theory
William Gordon Ritter
In the study of d-dimensional quantum channels , an assumption which is not very restrictive, and which has a natural physical interpretation, is that the corresponding…
Asset Pricing and Earnings Fluctuations in a Dynamic Corporate Economy
William Gordon Ritter
We give a new predictive mathematical model for macroeconomics, which deals specifically with asset prices and earnings fluctuations, in the presence of a dynamic economy involving…
Geometric Characterization of Property R
William Gordon Ritter
Consider pairs of the form (G, N), with G a group and N \normal G, as objects of a category \PG. A morphism (G_1, N_1) \To (G_2, N_2) will be a group homomorphism f : G_1 \To G_2 s…
Vacuum Geometry of the N=2 Wess-Zumino Model
William Gordon Ritter
We give a mathematically rigorous construction of the moduli space and vacuum geometry of a class of quantum field theories which are N=2 supersymmetric Wess-Zumino models on a cyl…