22 citations · 110 across the 24 of their papers we have counts for
25 papers
Standard Model Effective Field Theory and Oscillons
Z. Drogosz, E. I. Sfakianakis, K. Slawinska +1
We show that the inclusion of a dimension-six operator in the Higgs potential has a dramatic impact on the stability of oscillons in the bosonic sector of the Standard Mode…
Multifractal Signatures of Ageing and Dementia Development: A Multifractal Space-Filling Curve Analysis
Marta Lotka, Jacek Grela, Zbigniew Drogosz +2
Multifractality is an effective formalism for quantifying the nonlinear, scale-free properties of complex data. In this study, we propose a novel and efficient methodology, termed…
Boost-invariant and cylindrically symmetric perfect spin hydrodynamics
Zbigniew Drogosz, Wojciech Florkowski, Jakub Witkowski
Equations of a boost-invariant and cylindrically symmetric perfect hydrodynamics are solved numerically for initial conditions inspired by the wounded nucleon model. The energy-mom…
Boost-invariant perfect Fermi-Dirac spin hydrodynamics
Zbigniew Drogosz, Natalia Łygan
We analyze the effect of using the Fermi-Dirac statistics, rather than its Boltzmann approximation, in numerical simulations of perfect spin hydrodynamics of particles with spin 1/…
Nonlinear causality and stability of perfect spin hydrodynamics and its nonperturbative character
Samapan Bhadury, Zbigniew Drogosz, Wojciech Florkowski +2
Four formulations of perfect spin hydrodynamics for spin-1/2 particles, distinguished by their treatment of spin (classical vs. quantum) and by the underlying particle statistics (…
Machine learning in phase transition analysis of lattice quantum gravity
Jan Ambjorn, Zbigniew Drogosz, Jakub Gizbert-Studnicki +3
Using numerical data coming from Monte Carlo simulations of four-dimensional Causal Dynamical Triangulations, we study how automated machine learning algorithms can be used to reco…
Perfect spin hydrodynamics at all orders in spin polarization
Zbigniew Drogosz
We compare two recently developed frameworks of perfect spin hydrodynamics for spin- particles, based respectively on classical kinetic theory and the Wigner function. We show…
Spin hydrodynamics -- recent developments
Samapan Bhadury, Zbigniew Drogosz, Wojciech Florkowski +1
After briefly touching on relativistic hydrodynamics, we provide a detailed description of recent developments in spin hydrodynamics. We discuss the theory of perfect spin hydrodyn…
Application range of perfect spin hydrodynamics
Zbigniew Drogosz, Wojciech Florkowski, Valeriya Mykhaylova
The application range of perfect spin hydrodynamics is studied in two cases: one based on the classical spin description and the other using a quantum spin density matrix (Wigner f…
Local equilibrium Wigner function for spin-1/2 particles
Samapan Bhadury, Zbigniew Drogosz, Wojciech Florkowski +2
Formal connections between the spin density matrix and the Wigner function for spin-1/2 particles forming a relativistic gas are explored to determine their general structures. The…
Hybrid framework of Fermi-Dirac spin hydrodynamics
Zbigniew Drogosz
We outline the hybrid framework of spin hydrodynamics, combining classical kinetic theory with the Israel-Stewart method of introducing dissipation. We obtain the local equilibrium…
H and He nuclei production in a combined thermal and coalescence framework for heavy-ion collisions in the few-GeV energy regime
Zbigniew Drogosz, Wojciech Florkowski, Radoslaw Ryblewski +1
A thermal model describing hadron production in heavy-ion collisions in the few-GeV energy regime is combined with the idea of nucleon coalescence to make predictions for the H…
Using Space-Filling Curves and Fractals to Reveal Spatial and Temporal Patterns in Neuroimaging Data
Jacek Grela, Zbigniew Drogosz, Jakub Janarek +6
We present a novel method, Fractal Space-Curve Analysis (FSCA), which combines Space-Filling Curve (SFC) mapping for dimensionality reduction with fractal Detrended Fluctuation Ana…
Boost-invariant spin hydrodynamics with spin feedback effects
Zbigniew Drogosz, Wojciech Florkowski, Natalia Łygan +1
A recently formulated extension of perfect spin hydrodynamics, which includes second-order corrections in the spin polarization tensor to the energy-momentum tensor and baryon curr…
Dynamical constraints on pseudo-gauge transformations
Zbigniew Drogosz, Wojciech Florkowski, Mykhailo Hontarenko +1
Classical pseudo-gauge transformations are discussed in the context of hydrodynamic models of heavy-ion collisions. A decomposition of the pseudo-gauge transformation into Lorentz-…
Hybrid approach to perfect and dissipative spin hydrodynamics
Zbigniew Drogosz, Wojciech Florkowski, Mykhailo Hontarenko
A hybrid framework of spin hydrodynamics is proposed that combines the results of kinetic theory for particles with spin 1/2 with the Israel-Stewart method of introducing nonequili…
Investigating structural and functional aspects of the brain's criticality in stroke
Jakub Janarek, Zbigniew Drogosz, Jacek Grela +2
This paper addresses the question of the brain's critical dynamics after an injury such as a stroke. It is hypothesized that the healthy brain operates near a phase transition (cri…
New topological observables in a model of Causal Dynamical Triangulations on a torus
Zbigniew Drogosz
The structure of simplicial manifolds in a model of Causal Dynamical Triangulations in 3+1 dimensions with the spatial topology of a 3-torus is analyzed with the help of topologica…
Scalar fields in Causal Dynamical Triangulations
Jan Ambjørn, Zbigniew Drogosz, Jakub Gizbert-Studnicki +3
A typical geometry extracted from the path integral of a quantum theory of gravity might be quite complicated in the UV region. Even if such a configuration is not physical, it may…
CDT Quantum Toroidal Spacetimes: An Overview
J. Ambjorn, Z. Drogosz, J. Gizbert-Studnicki +3
Lattice formulations of gravity can be used to study non-perturbative aspects of quantum gravity. Causal Dynamical Triangulations (CDT) is a lattice model of gravity that has been…
Matter-driven change of spacetime topology
J. Ambjørn, Z. Drogosz, J. Gizbert-Studnicki +3
Using Monte-Carlo computer simulations, we study the impact of matter fields on the geometry of a typical quantum universe in the CDT model of lattice quantum gravity. The quantum…
Cosmic voids and filaments from quantum gravity
J. Ambjorn, Z. Drogosz, J. Gizbert-Studnicki +3
Using computer simulations we study the geometry of a typical quantum universe, i.e. the geometry one might expect before a possible period of inflation. We display it using coordi…
Properties of dynamical fractal geometries in the model of Causal Dynamical Triangulations
J. Ambjorn, Z. Drogosz, A. Görlich +1
We investigate the geometry of a quantum universe with the topology of the four-torus. The study of non-contractible geodesic loops reveals that a typical quantum geometry consists…
Pseudo-Cartesian coordinates in a model of Causal Dynamical Triangulations
Jan Ambjørn, Zbigniew Drogosz, Jakub Gizbert-Studnicki +2
Causal Dynamical Triangulations is a non-perturbative quantum gravity model, defined with a lattice cut-off. The model can be viewed as defined with a proper time but with no refer…