Few-Body Systems in Condensed Matter Physics
Sign Up to like & getrecommendations! Published in 2019 at "Few-Body Systems"
DOI: 10.1007/s00601-019-1520-1
Abstract: This review focuses on the studies and computations of few-body systems of electrons and holes in condensed matter physics. We analyze and illustrate the application of a variety of methods for description of two- three-… read more here.
Keywords: systems condensed; physics; matter physics; body systems ... See more keywords
Algebraic Method for Perturbed Three-Body Systems of $$\mathbf {A}_{\mathbf {2}} $$ Solvable Potential
Sign Up to like & getrecommendations! Published in 2020 at "Few-body Systems"
DOI: 10.1007/s00601-020-1543-7
Abstract: In this paper, we try to solve the Schrodinger equation in a quasi-exact solvable method for a three-body problem with a special interaction and by adding an anharmonic perturbation term. We consider the interaction and… read more here.
Keywords: method perturbed; algebraic method; body systems; body ... See more keywords
The Role of the Effective Range in Strongly-Interacting Few-Body Systems
Sign Up to like & getrecommendations! Published in 2024 at "Few-Body Systems"
DOI: 10.1007/s00601-024-01942-0
Abstract: Strongly interacting systems appear in several areas of physics and are characterized by attractive interactions that can almost, or just barely, loosely bind two particles. Although this definition is made at the two-body level, this… read more here.
Keywords: effective range; body systems; body; strongly interacting ... See more keywords
Green’s Function Perspective on the Nonlinear Density Response of Quantum Many-Body Systems
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DOI: 10.1007/s10955-025-03454-5
Abstract: We derive equations of motion for higher order density response functions using the theory of thermodynamic Green’s functions. We also derive expressions for the higher order generalized dielectric functions and polarization functions. Moreover, we relate… read more here.
Keywords: higher order; density response; quantum many; response ... See more keywords
Universality of size-energy ratio in four-body systems
Sign Up to like & getrecommendations! Published in 2019 at "Scientific Reports"
DOI: 10.1038/s41598-019-42312-9
Abstract: Universal relationship of scaled size and scaled energy, which was previously established for two- and three-body systems in their ground state, is examined for four-body systems, using Quantum Monte Carlo simulations. We study in detail… read more here.
Keywords: energy; size; four body; size energy ... See more keywords
Gravitational helicity flux density from two-body systems
Sign Up to like & getrecommendations! Published in 2024 at "Classical and Quantum Gravity"
DOI: 10.1088/1361-6382/ada863
Abstract: The helicity flux density is a novel quantity which characterizes the angle-dependence of the helicity of radiative gravitons and it may be tested by gravitational wave experiments in the future. We derive a quadrupole formula… read more here.
Keywords: flux density; two body; body systems; helicity flux ... See more keywords
One-dimensional quantum many body systems with long-range interactions
Sign Up to like & getrecommendations! Published in 2019 at "Journal of Physics A: Mathematical and Theoretical"
DOI: 10.1088/1751-8121/ab5634
Abstract: The presence of algebraically decaying long-range interactions may alter the critical as well as topological behaviour of a quantum many-body systems. However, when the interaction decays at a faster rate, the short-range behaviour is expected… read more here.
Keywords: many body; quantum many; body systems; range interactions ... See more keywords
Gargantuan chaotic gravitational three-body systems and their irreversibility to the Planck length
Sign Up to like & getrecommendations! Published in 2020 at "Monthly Notices of the Royal Astronomical Society"
DOI: 10.1093/mnras/staa452
Abstract: Chaos is present in most stellar dynamical systems and manifests itself through the exponential growth of small perturbations. Exponential divergence drives time irreversibility and increases the entropy in the system. A numerical consequence is that… read more here.
Keywords: planck length; gargantuan chaotic; body systems; body ... See more keywords
Classical dynamics of three-body systems in the Efimov potential
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DOI: 10.1103/physreva.101.053605
Abstract: We investigate the classical nonrelativistic dynamics of three bodies in Efimov's $\ensuremath{-}1/{R}^{2}$ potential in three spatial dimensions, with a view towards semiclassical quantization and insight into the geometry of Efimov states. Without the short-distance cutoff,… read more here.
Keywords: classical dynamics; body systems; efimov states; dynamics three ... See more keywords
Scalable tensor network algorithm for thermal quantum many-body systems in two dimensions
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DOI: 10.1103/physrevb.111.075146
Abstract: Simulating strongly-correlated quantum many-body systems at finite temperatures is a significant challenge in computational physics. In this work, we present a scalable finite-temperature tensor network algorithm for two-dimensional quantum many-body systems. We employ the (fermionic)… read more here.
Keywords: quantum many; network algorithm; tensor network; many body ... See more keywords
Effective Hamiltonians, prethermalization, and slow energy absorption in periodically driven many-body systems
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DOI: 10.1103/physrevb.95.014112
Abstract: We establish some general dynamical properties of quantum many-body systems that are subject to a high-frequency periodic driving. We prove that such systems have a quasiconserved extensive quantity ${H}_{*}$, which plays the role of an… read more here.
Keywords: many body; energy absorption; prethermalization slow; body systems ... See more keywords