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Physics, Volume 1, Issue 1 (December 2019)

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Open AccessArticle The Bose-Einstein Correlations and the Strong Coupling Constant at Low Energies
Physics 2019, 1(1), 59-66; https://doi.org/10.3390/physics1010006
Received: 12 February 2019 / Revised: 4 March 2019 / Accepted: 6 March 2019 / Published: 12 March 2019
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Abstract
It is shown that αs(E), the strong coupling constant, can be determined in the non-perturbative regime from Bose-Einstein correlations (BEC). The obtained αs(E), where E is the energy of the hadron in the [...] Read more.
It is shown that α s ( E ) , the strong coupling constant, can be determined in the non-perturbative regime from Bose-Einstein correlations (BEC). The obtained α s ( E ) , where E is the energy of the hadron in the center of mass reference frame of the di-hadron pair, is in agreement with the prescriptions dealt with in the Analytic Perturbative Theory approach. It also extrapolates smoothly to the standard perturbative α s ( E ) at higher energies. Our results indicate that BEC dimension can be considered as an alternative approach to the short-range correlations between hadrons. Full article
(This article belongs to the Special Issue Trends and Prospects in High Energy Physics)
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Open AccessArticle Fractional Prabhakar Derivative in Diffusion Equation with Non-Static Stochastic Resetting
Physics 2019, 1(1), 40-58; https://doi.org/10.3390/physics1010005
Received: 25 January 2019 / Revised: 1 March 2019 / Accepted: 2 March 2019 / Published: 6 March 2019
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Abstract
In this work, we investigate a series of mathematical aspects for the fractional diffusion equation with stochastic resetting. The stochastic resetting process in Evans–Majumdar sense has several applications in science, with a particular emphasis on non-equilibrium physics and biological systems. We propose a [...] Read more.
In this work, we investigate a series of mathematical aspects for the fractional diffusion equation with stochastic resetting. The stochastic resetting process in Evans–Majumdar sense has several applications in science, with a particular emphasis on non-equilibrium physics and biological systems. We propose a version of the stochastic resetting theory for systems in which the reset point is in motion, so the walker does not return to the initial position as in the standard model, but returns to a point that moves in space. In addition, we investigate the proposed stochastic resetting model for diffusion with the fractional operator of Prabhakar. The derivative of Prabhakar consists of an integro-differential operator that has a Mittag–Leffler function with three parameters in the integration kernel, so it generalizes a series of fractional operators such as Riemann–Liouville–Caputo. We present how the generalized model of stochastic resetting for fractional diffusion implies a rich class of anomalous diffusive processes, i.e., ( Δ x ) 2 t α , which includes sub-super-hyper-diffusive regimes. In the sequence, we generalize these ideas to the fractional Fokker–Planck equation for quadratic potential U ( x ) = a x 2 + b x + c . This work aims to present the generalized model of Evans–Majumdar’s theory for stochastic resetting under a new perspective of non-static restart points. Full article
(This article belongs to the Section Classical Physics)
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Open AccessArticle Cul-De-Sac of the Spatial Image of Proton Interactions
Physics 2019, 1(1), 33-39; https://doi.org/10.3390/physics1010004
Received: 11 December 2018 / Revised: 23 January 2019 / Accepted: 28 January 2019 / Published: 30 January 2019
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Abstract
The unitarity condition in the impact parameter space is used to obtain some information about the shape of the interaction region of colliding protons. It is shown that, strictly speaking, a reliable conclusion can be gained only if the behavior of the elastic [...] Read more.
The unitarity condition in the impact parameter space is used to obtain some information about the shape of the interaction region of colliding protons. It is shown that, strictly speaking, a reliable conclusion can be gained only if the behavior of the elastic scattering amplitude (especially, its imaginary part) at all transferred momenta is known. This information is currently impossible to obtain from experimentation. In practice, several assumptions and models are used. They lead to different results as shown below. Full article
(This article belongs to the Special Issue Trends and Prospects in High Energy Physics)
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Open AccessArticle Interpretation of Quantum Mechanics with Indefinite Norm
Physics 2019, 1(1), 17-32; https://doi.org/10.3390/physics1010003
Received: 2 November 2018 / Revised: 30 November 2018 / Accepted: 4 December 2018 / Published: 7 December 2018
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Abstract
The Born postulate can be reduced to its deterministic content that only applies to eigenvectors of observables: The standard probabilistic interpretation of generic states then follows from algebraic properties of repeated measurements and states. Extending this reasoning suggests an interpretation of quantum mechanics [...] Read more.
The Born postulate can be reduced to its deterministic content that only applies to eigenvectors of observables: The standard probabilistic interpretation of generic states then follows from algebraic properties of repeated measurements and states. Extending this reasoning suggests an interpretation of quantum mechanics generalized with indefinite quantum norm. Full article
(This article belongs to the Section Atomic Physics)
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Open AccessFeature PaperArticle Extended SSH Model: Non-Local Couplings and Non-Monotonous Edge States
Physics 2019, 1(1), 2-16; https://doi.org/10.3390/physics1010002
Received: 22 October 2018 / Revised: 13 November 2018 / Accepted: 16 November 2018 / Published: 19 November 2018
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Abstract
We construct a generalized system by introducing an additional long-range hopping to the well-known Su-Schrieffer-Heeger (SSH) model. This system exhibits richer topological properties including non-trivial topological phases and associated localized edge states. We study the zero-energy edge states in detail and derive the [...] Read more.
We construct a generalized system by introducing an additional long-range hopping to the well-known Su-Schrieffer-Heeger (SSH) model. This system exhibits richer topological properties including non-trivial topological phases and associated localized edge states. We study the zero-energy edge states in detail and derive the edge-state wave functions using two different methods. Furthermore, we propose a possible setup using octupole moments optically excited on an array of dielectric particles for the realization of the system, and by adjusting the coupling strengths between neighboring particles we can control the hotspots (near-field enhancement) in such structures. Full article
(This article belongs to the Special Issue Topological Photonics and Axion Electrodynamics)
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Open AccessEditorial Introduction to a New Open Access Journal by MDPI: Physics
Received: 31 October 2018 / Accepted: 31 October 2018 / Published: 2 November 2018
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Abstract
Herewith, we launch a new MDPI journal, Physics, for which I am honored to serve as Editor-in-Chief. [...] Full article
Physics EISSN 2624-8174 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
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