8 papers
Fugacity-Resolved Stabilizer Entropy in Critical Quantum Chains: Discrete Selberg Sums and Exactly Solvable Rényi Indices
Reyhaneh Khasseh, M. A. Rajabpour
Stabilizer Rényi entropy quantifies the nonstabilizerness of a quantum state through Rényi moments of its Pauli expectation-value distribution. Its standard form sums over Pauli-st…
Semiclassical Langevin dynamics of long-range dissipative time crystals
Reyhaneh Khasseh, Rosario Fazio, Angelo Russomanno
We develop a semiclassical Langevin approach to study finite-size effects in dissipative time-crystalline spin systems. For a spin- model with power-law Lindblad operators, we…
Universal Crossovers of Stabilizer Entropy Beyond Criticality
Reyhaneh Khasseh, E. A. Ramirez Trino, M. A. Rajabpour
Stabilizer Rényi entropy has emerged as a probe of nonstabilizerness in quantum many-body systems, but its scaling structure beyond critical points remains poorly understood compa…
Hidden Conformal Boundary Data in Finite-Temperature Stabilizer Entropy
Reyhaneh Khasseh, M. A. Rajabpour
We study the finite-temperature stabilizer Rényi entropy of the open critical quantum spin chains. At Rényi index one half, this observable probes the distribution of thermal Pau…
Snapshot renormalization group for quantum matter
Laurin Brunner, Tobias Wiener, Tiago Mendes-Santos +2
Recent advances in quantum simulator experiments enable unprecedented access to quantum many-body states through snapshot measurements of individual many-body configurations. Here,…
Explicit Pfaffian Formula for Amplitudes of Fermionic Gaussian Pure States in Arbitrary Pauli Bases
M. A. Rajabpour, M. A. Seifi Mirjafarlou, Reyhaneh Khasseh
The explicit computation of amplitudes for fermionic Gaussian pure states in arbitrary Pauli bases is a long-standing challenge in quantum many-body physics, with significant impli…