5 citations · 5 across the 1 of their papers we have counts for
9 papers
Magnetic impurities at quantum critical points: large- expansion and SPT connections
Shang Liu, Hassan Shapourian, Ashvin Vishwanath +1
In symmetry protected topological (SPT) phases, the combination of symmetries and a bulk gap stabilizes protected modes at surfaces or at topological defects. Understanding the fat…
Gauging anomalous unitary operators
Yuhan Liu, Hassan Shapourian, Paolo Glorioso +1
Boundary theories of static bulk topological phases of matter are obstructed in the sense that they cannot be realized on their own as isolated systems. The obstruction can be quan…
Anyonic Partial Transpose I: Quantum Information Aspects
Hassan Shapourian, Roger S. K. Mong, Shinsei Ryu
A basic diagnostic of entanglement in mixed quantum states is known as the partial transpose and the corresponding entanglement measure is called the logarithmic negativity. Despit…
Entanglement negativity spectrum of random mixed states: A diagrammatic approach
Hassan Shapourian, Shang Liu, Jonah Kudler-Flam +1
The entanglement properties of random pure states are relevant to a variety of problems ranging from chaotic quantum dynamics to black hole physics. The averaged bipartite entangle…
The negativity contour: a quasi-local measure of entanglement for mixed states
Jonah Kudler-Flam, Hassan Shapourian, Shinsei Ryu
In this paper, we study the entanglement structure of mixed states in quantum many-body systems using the , a local measure of entanglement that determ…
Twisted and untwisted negativity spectrum of free fermions
Hassan Shapourian, Paola Ruggiero, Shinsei Ryu +1
A basic diagnostic of entanglement in mixed quantum states is known as the positive partial transpose (PT) criterion. Such criterion is based on the observation that the spectrum o…