3 papers
quant-ph2026
Spin models with critical ground space degeneracy from Lie algebra relations
Andras Molnar, Efekan Kökcü, Norbert Schuch +1
We introduce an -symmetric spin model derived from the algebraic structure of : It is obtained as the nearest-neighbor parent Hamiltonian of a Mat…
quant-ph2026
Challenges in Barren Plateau Mitigation with Dynamic Parameterized Quantum Circuits
Sumeet Shirgure, Efekan Kökcü, Siyuan Niu
Variational quantum algorithms (VQAs) are a promising paradigm for quantum advantage, yet their trainability is severely hampered by barren plateaus (BPs). Several recent works hav…
hep-lat2026
Strong-coupling expansion and two-point Padé approximation for lattice field theory
Yuanran Zhu, Efekan Kökcü, Chao Yang
Reliable approximations for correlation functions at intermediate and strong coupling remain hard to obtain for general quantum field theories. Perturbative expansions are often as…