39 citations · 143 across the 12 of their papers we have counts for
12 papers
Hofstadter Butterflies in Topological Insulators
Larry Li, Marcin Abram, Abhinav Prem +1
In this chapter, we investigate the energy spectra as well as the bulk and surface states in a two-dimensional system composed of a coupled stack of one-dimensional dimerized chain…
Performance Weighting for Robust Federated Learning Against Corrupted Sources
Dimitris Stripelis, Marcin Abram, Jose Luis Ambite
Federated Learning has emerged as a dominant computational paradigm for distributed machine learning. Its unique data privacy properties allow us to collaboratively train models wh…
Emulating Quantum Dynamics with Neural Networks via Knowledge Distillation
Yu Yao, Chao Cao, Stephan Haas +3
High-fidelity quantum dynamics emulators can be used to predict the time evolution of complex physical systems. Here, we introduce an efficient training framework for constructing…
Inferring topological transitions in pattern-forming processes with self-supervised learning
Marcin Abram, Keith Burghardt, Greg Ver Steeg +2
The identification and classification of transitions in topological and microstructural regimes in pattern-forming processes are critical for understanding and fabricating microstr…
Democratising blockchain: A minimal agency consensus model
Marcin Abram, David Galindo, Daniel Honerkamp +2
We propose a novel consensus protocol based on a hybrid approach, that combines a directed acyclic graph (DAG) and a classical chain of blocks. This architecture allows us to enfor…
Antiferromagnetism, charge density wave, and d-wave superconductivity in the extended ---- model: role of intersite Coulomb interaction and a critical overview of renormalized mean field theory
Marcin Abram, Michał Zegrodnik, Jozef Spałek
In the first part of the paper, we study the stability of antiferromagnetic (AF), charge density wave (CDW), and superconducting (SC) states within the --- model of str…
Tricritical wings in UGe: A microscopic interpretation
Marcin Abram, Marcin M. Wysokiński, Józef Spałek
In the present work we analyze the second order transition line that connect the tricritical point and the quantum critical ending point on the temperature--magnetic-field plane in…
t-t'-J-U model in mean-field approximation: Coexistence of superconductivity and antiferromagnetism
Marcin Abram
We discuss the -- model in the mean-field approximation. The role of spin-exchange coupling and the second nearest hopping are examined in the context of the coex…
Criticalities in the itinerant ferromagnet UGe
Marcin M. Wysokiński, Marcin Abram, Józef Spałek
We provide a microscopic description of the magnetic properties of UGe and in particular, of its both classical and quantum critical behavior. Namely, we account for all the cr…
Ferromagnetism in UGe2 : A microscopic model
Marcin M. Wysokiński, Marcin Abram, Jozef Spałek
Anderson lattice model is used to rationalize the principal features of the heavy fermion compound UGe2 by means of the generalized Gutzwiller approach (the SGA method). This micro…
Model of hard spheroplatelets near a hard wall
A. Kapanowski, M. Abram
A system of hard spheroplatelets near an impenetrable wall is studied in the low-density Onsager approximation. Spheroplatelets have optimal shape between rods and plates, and the…
d-wave superconductivity and its coexistence with antiferromagnetism in t-J-U model: Statistically consistent Gutzwiller approach
Marcin Abram, Jan Kaczmarczyk, Jakub Jedrak +1
We discuss the coexistence of antiferromagnetism and d-wave superconductivity within the so-called statistically-consistent Gutzwiller approximation (SGA) applied to the t-J-U mode…