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quant-ph2026
Krylov complexity and fidelity susceptibility in two-band Hamiltonians
Rishav Chaudhuri, Ayush Raj, Soham Ray +1
We investigate Krylov spread complexity for the ground state of two-band Hamiltonians, where the reference state is a generic state on the Bloch sphere. The spread complexity is ob…
quant-ph2024
Topological entanglement entropy meets holographic entropy inequalities
Joydeep Naskar, Sai Satyam Samal
Topological entanglement entropy (TEE) is an efficient way to detect topological order in the ground state of gapped Hamiltonians. The seminal work of Kitaev and Preskill~\cite{pre…