539 citations · 8.4k across the 125 of their papers we have counts for
124 papers
Low-temperature Depletion of Superfluid Density in the Absence of Galilean Symmetry
Viktor Berger, Nikolay Prokof'ev, Boris Svistunov
Landau theory of superfluidity associates low-temperature flow of the normal component with the phonon wind. This picture does not apply to superfluids in which Galilean invariance…
Strange diffusivity of incoherent metal in half-filled two-dimensional Hubbard model
Youngmin Eom, Igor S. Tupitsyn, Nikolay V. Prokof'ev +3
We study charge transport across the metal-insulator crossover in the half-filled two-dimensional Hubbard model, with particular emphasis on precision control. The dynamic current-…
"Depletion" of Superfluid Density: Universal Low-temperature Thermodynamics of Superfluids
Viktor Berger, Nikolay Prokof'ev, Boris Svistunov
In a Galilean superfluid, the depletion of superfluid density with rising temperature can be attributed to thermally excited non-interacting phonons. For systems without Galilean s…
Bose-Hubbard model with power-law hopping in one dimension
Tanul Gupta, Nikolay V. Prokof'ev, Guido Pupillo
We investigate the zero-temperature phase diagram of the one-dimensional Bose-Hubbard model with power-law hopping decaying with distance as using exact large scale quantum…
Effects of phonon dispersion on the bond-bipolaron superconductivity
Chao Zhang, Nikolay Prokof'ev, Boris Svistunov
We employ the diagrammatic Monte Carlo method based on lattice path-integral representaion of the particle sector and real-space diagrammatics of the phonon sector to study effects…
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…