495 citations · 2k across the 65 of their papers we have counts for
5 papers · 1 filter
Superconductivity of bipolarons from quadratic electron-phonon interaction
Zhongjin Zhang, Anatoly Kuklov, Nikolay Prokof'ev +1
In systems with linear electron-phonon interaction (EPI), bound states of polarons, or bipolarons, form by gaining energy from the lattice deformation. The quadratic EPI case is fu…
Soliton States From Quadratic Electron-Phonon Interaction
Zhongjin Zhang, Anatoly Kuklov, Nikolay Prokof'ev +1
We present the first numerically exact study of self-trapped, a.k.a. soliton, states of electrons that form in materials with strong quadratic coupling to the phonon coordinates. P…
Polaron with Quadratic Electron-phonon Interaction
Stefano Ragni, Thomas Hahn, Zhongjin Zhang +9
We present the first numerically exact study of a polaron with quadratic coupling to the oscillator displacement, using two alternative methodological developments. Our results cov…
Deconfined criticality flow in the Heisenberg model with ring-exchange interactions
Kun Chen, Yuan Huang, Youjin Deng +3
Quantum transition points in the J -Q model---the test bed of the deconfined critical point theory---and the SU(2)-symmetric discrete noncompact CP^1 representation of the deconfin…
Deconfined criticality, runaway flow in the two-component scalar electrodynamics and weak first-order superfluid-solid transitions
Anatoly Kuklov, Nikolay Prokof'ev, Boris Svistunov +1
We perform a comparative Monte Carlo study of the easy-plane deconfined critical point (DCP) action and its short-range counterpart to reveal close similarities between the two mod…