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
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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
Universality of size-energy ratio in four-body systems
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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
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
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
Ballistic near-field heat transport in dense many-body systems
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DOI: 10.1103/physrevb.97.035423
Abstract: Radiative heat transport mediated by near-field interactions is known to be superdiffusive in dilute, many-body systems. Here we use a generalized Landauer theory of radiative heat transfer in many-body planar systems to demonstrate a nonmonotonic… read more here.
Keywords: many body; heat transport; body systems; heat ... See more keywords
Time Scale for Adiabaticity Breakdown in Driven Many-Body Systems and Orthogonality Catastrophe.
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DOI: 10.1103/physrevlett.119.200401
Abstract: The adiabatic theorem is a fundamental result in quantum mechanics, which states that a system can be kept arbitrarily close to the instantaneous ground state of its Hamiltonian if the latter varies in time slowly… read more here.
Keywords: many body; orthogonality catastrophe; time; time scale ... See more keywords
Symmetry-Resolved Entanglement in Many-Body Systems.
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DOI: 10.1103/physrevlett.120.200602
Abstract: Similarly to the system Hamiltonian, a subsystem's reduced density matrix is composed of blocks characterized by symmetry quantum numbers (charge sectors). We present a geometric approach for extracting the contribution of individual charge sectors to… read more here.
Keywords: resolved entanglement; charge sectors; many body; entanglement many ... See more keywords
Orthogonality Catastrophe in Dissipative Quantum Many-Body Systems.
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DOI: 10.1103/physrevlett.122.040604
Abstract: We present an analog of the phenomenon of orthogonality catastrophe in quantum many-body systems subject to a local dissipative impurity. We show that the fidelity F(t), giving a measure for distance of the time-evolved state… read more here.
Keywords: orthogonality catastrophe; many body; body systems; quantum many ... See more keywords