27 citations · 53 across the 6 of their papers we have counts for
6 papers
Anomalous Eigenstates of a Doped Hole in the Ising Antiferromagnet
Piotr Wrzosek, Krzysztof Wohlfeld, Eugene A. Demler +2
The problem of a mobile hole doped into an antiferromagnet Mott insulator is believed to underly the rich physics of several paradigmatic strongly correlated electron systems, rang…
Rare collapse of fermionic quasiparticles upon coupling to local bosons
Piotr Wrzosek, Adam Kłosiński, Krzysztof Wohlfeld +1
We study the stability of the fermionic quasiparticle in a fermion-boson model on a Bethe lattice, with fermions interacting with local bosons via a polaronic-type coupling. We sol…
The fate of the spin polaron in the 1D antiferromagnets
Piotr Wrzosek, Adam Kosinski, Yao Wang +3
The stability of the spin polaron quasiparticle, well established in studies of a single hole in the 2D antiferromagnets, is investigated in the 1D antiferromagnets using a t-J mod…
Hole in the 2D Ising Antiferromagnet: Origin of the Incoherent Spectrum
Piotr Wrzosek, Krzysztof Wohlfeld
We develop a "self-avoiding walks" approximation and use it to calculate the spectral function of a single hole introduced into the 2D square lattice Ising antiferromagnet. The obt…
Quantum walk versus classical wave: Distinguishing ground states of quantum magnets by spacetime dynamics
Piotr Wrzosek, Krzysztof Wohlfeld, Damian Hofmann +2
We investigate the wavepacket spreading after a single spin flip in prototypical two-dimensional ferromagnetic and antiferromagnetic quantum spin systems. We find characteristic sp…
From "Weak" to "Strong" Hole Confinement in a Mott Insulator
Krzysztof Bieniasz, Piotr Wrzosek, Andrzej M. Oles +1
We study the problem of a single hole in an Ising antiferromagnet and, using the magnon expansion and analytical methods, determine the expansion coefficients of its wave function…