71 citations · 493 across the 36 of their papers we have counts for
4 papers · 1 filter
Phonon dispersion and the competition between pairing and charge order
Natanael C. Costa, T. Blommel, W. -T. Chiu +2
The Holstein Model (HM) describes the interaction between fermions and a collection of local (dispersionless) phonon modes. In the dilute limit, the phonon degrees of freedom dress…
Compressible Ferrimagnetism in the depleted Periodic Anderson Model
N. C. Costa, M. V. Araújo, J. P. Lima +3
Tight-binding Hamiltonians with single and multiple orbitals exhibit an intriguing array of magnetic phase transitions. In most cases the spin ordered phases are insulating, while…
Principal Component Analysis for Fermionic Critical Points
Natanael C. Costa, Wenjian Hu, Z. J. Bai +2
We use determinant Quantum Monte Carlo (DQMC), in combination with the principal component analysis (PCA) approach to unsupervised learning, to extract information about phase tran…
A mean-field approach to Kondo-attractive-Hubbard model
N. C. Costa, J. P. Lima, T. C. L. Paiva +2
With the purpose of investigating coexistence between magnetic order and superconductivity, we consider a model in which conduction electrons interact with each other, via an attra…