3 papers
quant-ph2026
Spectral theory of energy-selective quantum search with Ising Hamiltonian phase oracles
A. S. Plyashechnik, A. A. Zhukov, A. V. Lebedev +1
We develop an exact spectral-response theory for the Grover-type iterate \(W_T=D_ξ\exp(-\ii T H)\), in which the evolution generated by a diagonal Ising Hamiltonian is used directl…
cond-mat.quant-gas2024
Bose-Einstein condensation in canonical ensemble with fixed total momentum
Andrey S. Plyashechnik, Alexey A. Sokolik, Yurii E. Lozovik
We consider Bose-Einstein condensation of noninteracting homogeneous three-dimensional gas in canonical ensemble when both particle number and total momentum of al…
cond-mat.mes-hall2023
Coupled system of electrons and exciton-polaritons: Screening, dynamical effects, and superconductivity
Andrey S. Plyashechnik, Alexey A. Sokolik, Nina S. Voronova +1
Bose-Fermi systems such as mixtures of electrons with excitons or exciton-polaritons are extensively discussed as candidates to host a variety of intriguing phenomena, including po…