205 citations · 314 across the 8 of their papers we have counts for
8 papers
Calculating the polarization in bi-partite lattice models: application to an extended Su-Schrieffer-Heeger model
Balázs Hetényi, Yetkin Pulcu, Serkan Doğan
We address the question of different representation of Bloch states for lattices with a basis, with a focus on topological systems. The representations differ in the relative phase…
Interaction driven polarization shift in the lattice fermion model at half filling: emergent Haldane phase
Balázs Hetényi
We study the model in one dimension at half-filling. It is known that for large enough fixed, as is varied, the system goes from a charge-density wave into a Lutt…
Generalized Aubry-André-Harper model with modulated hopping and -wave pairing
Mohammad Yahyavi, Balázs Hetényi, Bilal Tanatar
We study an extended Aubry-Andr{é}-Harper model with simultaneous modulation of hopping, on-site potential, and -wave superconducting pairing. For the case of commensurate modul…
Quantum phase transitions from analysis of the polarization amplitude
Balázs Hetényi, Balázs Dóra
In the modern theory of polarization, polarization itself is given by a geometric phase. In calculations for interacting systems the polarization and its variance are obtained from…
Quantum quench in 2D using the variational Baeriswyl wavefunction
Balázs Dóra, Masudul Haque, Frank Pollmann +1
By combining the Baeriswyl wavefunction with equilibrium and time-dependent variational principles, we develop a non-equilibrium formalism to study quantum quenches for two dimensi…
Impurity coupled to an artificial magnetic field in a Fermi gas in a ring trap
F. Nur Ünal, Balázs Hetényi, M. Ö. Oktel
The dynamics of a single impurity interacting with a many particle background is one of the central problems of condensed matter physics. Recent progress in ultracold atom experime…
Cumulants associated with geometric phases
Balázs Hetényi, Mohammad Yahyavi
The Berry phase can be obtained by taking the continuous limit of a cyclic product $-\mbox{Im} \ln \prod_{I=0}^{M-1} \langle Ψ_0({\boldsymbol ξ}_I)|Ψ_0({\boldsymbol ξ}_{I+1})\rangl…
Phase Diagram of a Frustrated Quantum Antiferromagnet on the Honeycomb Lattice: Magnetic Order versus Valence-Bond Crystal formation
A. F. Albuquerque, D. Schwandt, B. Hetényi +3
We present a comprehensive computational study of the phase diagram of the frustrated S=1/2 Heisenberg antiferromagnet on the honeycomb lattice, with second-nearest (J2) and third-…