717 citations · 4.5k across the 117 of their papers we have counts for
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Multi-scale Entanglement Renormalization Ansatz in Two Dimensions: Quantum Ising Model
Lukasz Cincio, Jacek Dziarmaga, Marek M. Rams
We propose a symmetric version of the multi-scale entanglement renormalization Ansatz (MERA) in two spatial dimensions (2D) and use this Ansatz to find an unknown ground state of a…
Dynamics of the Bose-Hubbard model: transition from Mott insulator to superfluid
Fernando M. Cucchietti, Bogdan Damski, Jacek Dziarmaga +1
We study the dynamics of phase transitions in the one dimensional Bose-Hubbard model. To drive the system from Mott insulator to superfluid phase, we change the tunneling frequency…
Images of a Bose-Einstein condensate in position and momentum space
Jacek Dziarmaga, Krzysztof Sacha
In the Bogoliubov theory a condensate initially prepared in its ground state described by stationary Bogoliubov vacuum and later perturbed by a time-dependent potential or interact…
N-particle Bogoliubov vacuum state
Jacek Dziarmaga, Krzysztof Sacha
We consider the Bogoliubov vacuum state in the number-conserving Bogoliubov theory proposed by Castin and Dum [Phys. Rev. A 57, 3008 (1998)]. We show that in the particle represent…
Dynamics of quantum phase transition: exact solution in quantum Ising model
Jacek Dziarmaga
Quantum Ising model is an exactly solvable model of quantum phase transition. This paper gives an exact solution when the system is driven through the critical point at finite rate…
Quantum fluctuations of a vortex in a dilute Bose-Einstein condensate
Jacek Dziarmaga, Jakub Meisner
A vortex in a quasi two-dimensional Bose-Einstein condensate is subject to the Magnus force and can be effectively described as a planar particle in a uniform magnetic field. Quant…
Laser cooling all the way down to Fermi superfluid
Jacek Dziarmaga, Maciej Lewenstein
Numerical simulations for realistic experimental parameters demonstrate that laser cooling on the attractive side of the Feshbach resonance can drive fermions much below the superf…
Fast partial decoherence of a superconducting flux qubit in a spin bath
Jacek Dziarmaga
The superconducting flux qubit has two quantum states with opposite magnetic flux. Environment of nuclear spins can find out the direction of the magnetic flux after a decoherence…