175 citations · 1.6k across the 65 of their papers we have counts for
4 papers · 2 filters
Ground-State Spaces of Frustration-Free Hamiltonians
Jianxin Chen, Zhengfeng Ji, David Kribs +2
We study the ground-state space properties for frustration-free Hamiltonians. We introduce a concept of `reduced spaces' to characterize local structures of ground-state spaces. Fo…
From Ground States to Local Hamiltonians
Jianxin Chen, Zhengfeng Ji, Bei Zeng +1
Traditional quantum physics solves ground states for a given Hamiltonian, while quantum information science asks for the existence and construction of certain Hamiltonians for give…
Rank Reduction for the Local Consistency Problem
Jianxin Chen, Zhengfeng Ji, Alexander Klyachko +2
We address the problem of how simple a solution can be for a given quantum local consistency instance. More specifically, we investigate how small the rank of the global density op…
Correlations in excited states of local Hamiltonians
Jianxin Chen, Zhengfeng Ji, Zhaohui Wei +1
Physical properties of the ground and excited states of a -local Hamiltonian are largely determined by the -particle reduced density matrices (-RDMs), or simply the -ma…