51 citations · 84 across the 6 of their papers we have counts for
6 papers
Ultrafast spintronics with geometric effects in non-adiabatic wave-packet dynamics
Matisse Wei-Yuan Tu, Li-Sheng Lin, Chung-Yu Wang +6
Motivated by the intriguing possibilities of steering ultrafast non-adiabatic processes through the geometric properties of bands in quantum materials by laser pulses, we extend a…
Coupled Kohn-Sham equations for electrons and phonons
Chung-Yu Wang, T. Müller, Sangeeta Sharma +2
This work establishes the algebraic structure of the Kohn-Sham equations to be solved in a density formulation of electron and phonon dynamics, including the superconducting order…
Quantum group symmetries and completeness for A_{2n}^(2) open spin chains
Ibrahim Ahmed, Rafael I. Nepomechie, Chunguang Wang
We argue that the Hamiltonians for A_{2n}^(2) open quantum spin chains corresponding to two choices of integrable boundary conditions have the symmetries U_q(B_n) and U_q(C_n), res…
Twisting singular solutions of Bethe's equations
Rafael I. Nepomechie, Chunguang Wang
The Bethe equations for the periodic XXX and XXZ spin chains admit singular solutions, for which the corresponding eigenvalues and eigenvectors are ill-defined. We use a twist regu…
Boundary energy of the open XXX chain with a non-diagonal boundary term
Rafael I. Nepomechie, Chunguang Wang
We analyze the ground state of the open spin-1/2 isotropic quantum spin chain with a non-diagonal boundary term using a recently proposed Bethe ansatz solution. As the coefficient…
Algebraic Bethe ansatz for singular solutions
Rafael I. Nepomechie, Chunguang Wang
The Bethe equations for the isotropic periodic spin-1/2 Heisenberg chain with N sites have solutions containing i/2, -i/2 that are singular: both the corresponding energy and the a…