A5089623691- Quantum, superfluid, helium dynamics
- Advanced Chemical Physics Studies
- Cold Atom Physics and Bose-Einstein Condensates
- Black Holes and Theoretical Physics
- Spectroscopy and Quantum Chemical Studies
- Cosmology and Gravitation Theories
- advanced mathematical theories
- Algebraic structures and combinatorial models
- Relativity and Gravitational Theory
- Quantum chaos and dynamical systems
- Nonlinear Waves and Solitons
- Analytical Chemistry and Chromatography
- Scientific Research and Discoveries
- Antibiotics Pharmacokinetics and Efficacy
- Atomic and Subatomic Physics Research
- Advanced Thermodynamics and Statistical Mechanics
- High-Energy Particle Collisions Research
- Astro and Planetary Science
- Nonlinear Photonic Systems
- Physics of Superconductivity and Magnetism
- Computational Drug Discovery Methods
- Insurance, Mortality, Demography, Risk Management
- Solar and Space Plasma Dynamics
- Advanced Topics in Algebra
- Statistical Mechanics and Entropy
University of Belgrade
2011-2024
Institute of Physics Belgrade
2008-2024
Ministry of Interior of the Republic of Serbia
2024
University of Nis
1998-2023
Ruhr University Bochum
2023
Ben-Gurion University of the Negev
2006
Institute of Physics of the Slovak Academy of Sciences
2000
Brown University
1986-1987
This document presents a summary of the 2023 Terrestrial Very-Long-Baseline Atom Interferometry Workshop hosted by CERN. The workshop brought together experts from around world to discuss exciting developments in large-scale atom interferometer (AI) prototypes and their potential for detecting ultralight dark matter gravitational waves. primary objective was lay groundwork an international TVLBAI proto-collaboration. collaboration aims unite researchers different institutions strategize...
The Multi-platform Aggregated Dataset of Online Communities (MADOC) is a comprehensive dataset that facilitates computational social science research by providing FAIR-compliant standardized access to cross-platform analysis online dynamics. MADOC aggregates and standardizes data from Bluesky, Koo, Reddit, Voat (2012-2024), containing 18.9 million posts, 236 comments, 23.1 unique users. enables comparative studies toxic behavior evolution across platforms through interaction records...
We present a completely integrable deformation of the CGHS dilaton gravity model in two dimensions. The solution is singularity free black hole that at large distances asymptoticaly joins to solution.
The development of the stormwater management strategies, e.g., low-impact (LID), water-sensitive urban design (WSUD), and sustainable drainage solutions (SUDS), was initiated in mid-1980s as a set engineering approaches technologies to reduce harmful effects stormwater. Over time, all them evolved holistic, multidisciplinary and, today, they are increasingly viewed implemented under umbrella term “Nature-based Solutions” (NbS). technical elements measures these NbS represent various...
By recursively solving the underlying Schr\" odinger equation, we set up an efficient systematic approach for deriving analytic expressions discretized effective actions. With this obtain discrete short-time propagators both one and many particles in arbitrary dimension to orders which have not been accessible before. They can be used substantially speed numerical Monte Carlo calculations of path integrals, as well setting a new analytical approximation scheme energy spectra, density states,...
We present a new analytical method that systematically improves the convergence of path integrals generic $N$-fold discretized theory. Using it we calculate effective actions ${S}^{(p)}$ for $p\ensuremath{\le}9$, which lead to same continuum amplitudes as starting action, but converge limit $1/{N}^{p}$. checked this derived speedup in by performing Monte Carlo simulations on several different models.
In this paper, building on a previous analysis [1] of exact diagonalization the space-discretized evolution operator for study properties non-relativistic quantum systems, we present substantial improvement to method. We apply recently introduced effective action approach obtaining short-time expansion propagator up very high orders calculate matrix elements operator. This improves by many magnitude previously used approximations discretized and allows us numerically obtain large numbers...
This document presents a summary of the 2023 Terrestrial Very-Long-Baseline Atom Interferometry Workshop hosted by CERN. The workshop brought together experts from around world to discuss exciting developments in large-scale atom interferometer (AI) prototypes and their potential for detecting ultralight dark matter gravitational waves. primary objective was lay groundwork an international TVLBAI proto-collaboration. collaboration aims unite researchers different institutions strategize...
In this and the subsequent paper (Balaž et al 2011 J. Stat. Mech. P03005) we develop a recursive approach for calculating short-time expansion of propagator general quantum system in time-dependent potential to orders that have not been accessible before. To end is expressed terms discretized effective potential, which derive analytically solve set efficient recursion relations. Such can be used substantially speed up numerical Monte Carlo simulations path integrals, or various analytic...
Based on a previously developed recursive approach for calculating the short-time expansion of propagator systems with time-independent potentials and its time-dependent generalization simple single-particle systems, in this paper we present full extension formalism to general quantum system many degrees freedom potential.Furthermore, also velocity-independent part effective potential, which is necessary diagonal amplitudes partition functions, as well an from imaginary-time real-time one,...
We present and discuss a detailed derivation of an analytical method that systematically improves the convergence path integrals generic $N$-fold discretized theory. develop explicit procedure for calculating set effective actions ${S}^{(p)}$, $p=1,2,3,\dots{}$ which have property they lead to same continuum amplitudes as starting action, but converge limit ever faster. Discretized calculated using $p$-level action differ from by term order $1∕{N}^{p}$. obtain expressions levels...
We analyze the method for calculation of properties nonrelativistic quantum systems based on exact diagonalization space-discretized short-time evolution operators. In this paper we present a detailed analysis errors associated with space discretization. Approaches using direct real-space discretized Hamiltonians lead to polynomial in discretization spacing $\ensuremath{\Delta}$. Here show that operators leads substantially smaller errors, vanishing exponentially...
Schwarzschild-like black hole solutions corresponding to periodic universes are presented and analyzed. In the case of one compact dimension an analytic solution is given. An interesting structure horizons-within-horizons discovered when size coordinate smaller than Schwarzschild radius. A variational method also introduced applied all spatial coordinates being compact.
We introduce and analyze an interesting quantity, the path integral ideal, governing flow of generic discrete theories to continuum limit greatly increasing their convergence. The said is classified according degree divergence potential at spatial infinity. Studying asymptotic behavior ideals we isolate dominant terms in effective that determine a theory for large time steps.
We present Path Integral Monte Carlo C code for calculation of quantum mechanical transition amplitudes 1D models. The SPEEDUP is based on the use higher-order short-time effective actions and implemented to maximal order $p$=18 in time propagation (Monte step), which substantially improves convergence discretized their exact continuum values. Symbolic derivation Mathematica codes, using recursive Schroedinger equation approach. In addition general theory, developed codes are capable...
Changes in the hydrological regime are widely investigated using a variety of approaches. In this study, we assess changes annual and seasonal flow characteristics based on probabilistic representation runoff at daily time scale. The pattern is constructed by determining quantiles from marginal distributions flows for each day within year. By applying Fourier transformation statistics partial series, obtain smooth periodical functions distribution parameters over year consequently quantiles....