18 citations · 32 across the 5 of their papers we have counts for
7 papers
Lattice Hamiltonian approach to the Schwinger model: further results from the strong coupling expansion
Marcin Szyniszewski, Krzysztof Cichy, Agnieszka Kujawa-Cichy
We employ exact diagonalization with strong coupling expansion to the massless and massive Schwinger model. New results are presented for the ground state energy and scalar mass ga…
The influence of magnetic field on the superconducting properties and the BCS-BEC crossover in systems with local fermion pairing
Agnieszka Kujawa-Cichy
The aim of this Ph.D. thesis was to investigate superconducting properties in the presence of Zeeman magnetic field in systems with local fermion pairing on the lattice. The study…
On the Imbalanced d-wave Superfluids within the Spin Polarized Extended Hubbard Model: Weak Coupling Limit
Agnieszka Kujawa-Cichy
We investigate the superfluid properties of d-wave pairing symmetry within the Extended Hubbard Model (EHM) in a magnetic field. We analyze the temperature and magnetic field depen…
On the BCS-BEC crossover in the 2D Asymmetric Attractive Hubbard Model
Agnieszka Kujawa-Cichy
We analyze the evolution from the weak coupling (BCS-like limit) to the strong coupling limit of tightly bound local pairs (LP's) in the 2D asymmetric attractive Hubbard model, in…
Stability of superfluid phases in the 2D Spin-Polarized Attractive Hubbard Model
Agnieszka Kujawa-Cichy, Roman Micnas
We study the evolution from the weak coupling (BCS-like limit) to the strong coupling limit of tightly bound local pairs (LP's) with increasing attraction, in the presence of the Z…
On the BCS-BEC crossover in the Spin-Polarized Attractive Hubbard Model at T=0
Agnieszka Kujawa-Cichy
The influence of the Zeeman magnetic field () on the ground state evolution of superfluid properties from the weak coupling (BCS like) to the strong coupling limit of tightly bo…
Lattice Hamiltonian approach to the massless Schwinger model: precise extraction of the mass gap
Krzysztof Cichy, Agnieszka Kujawa-Cichy, Marcin Szyniszewski
We present results of applying the Hamiltonian approach to the massless Schwinger model. A finite basis is constructed using the strong coupling expansion to a very high order. Usi…