40 citations · 250 across the 28 of their papers we have counts for
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quant-ph2020
Decomposition of symmetric separable states and ground state energy of bosonic systems
Stephan Weis
We prove that every symmetric separable state admits a convex decomposition into symmetric pure product states. While the result is not new in itself, here we focus on convex geome…
math.FA2020
The face generated by a point, generalized affine constraints, and quantum theory
Stephan Weis, Maksim Shirokov
We analyze faces generated by points in an arbitrary convex set and their relative algebraic interiors, which are nonempty as we shall prove. We show that by intersecting a convex…
quant-ph2020★ 9 cited
Extreme points of the set of quantum states with bounded energy
Stephan Weis, Maksim Shirokov
We show that for any energy observable every extreme point of the set of quantum states with bounded energy is a pure state. This allows us to write every state with bounded energy…