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Physics, Volume 4, Issue 3

2022 September - 25 articles

Cover Story: We all have in mind Einstein’s famous thought experiment in the elevator where we observe the free fall of a body, and then the trajectory of a light ray. Here, in addition to the qualitative aspect, the exact calculations are carried out, and the worldline equations are given. It is shown that the trajectories of the particles are semi-ellipses with the center on the event horizon. Some experimental consequences are discussed, especially the experiment with the accelerated Michelson–Morley interferometer, which is solved, and an experiment, where a new relativistic paradox appears is described—a particle of matter seems to go faster than light. View thia paper
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Articles (25)

  • Review
  • Open Access
12 Citations
4,988 Views
13 Pages

9 September 2022

Nuclear shell model is a powerful approach to investigate nuclear structure microscopically. However, the computational cost of shell-model calculations becomes huge in medium-heavy nuclei. I briefly review the theoretical framework and the code deve...

  • Article
  • Open Access
3 Citations
2,397 Views
14 Pages

8 September 2022

We obtain an analytic approximation of the bound states solution of the Schrödinger equation on the semi-infinite real line for two potential models with a rich structure as shown by their spectral phase diagrams. These potentials do not belong...

  • Article
  • Open Access
4 Citations
3,047 Views
17 Pages

8 September 2022

Series solutions are used to explore the mode conversion of slow, Alfvén and fast magnetohydrodynamic waves injected at the base of a two-isothermal-layer stratified atmosphere with a uniform magnetic field, crudely representing the solar chro...

  • Article
  • Open Access
1 Citations
3,428 Views
24 Pages

6 September 2022

Probability distributions for the center of gravity are fundamental tools for track fitting. The center of gravity is a widespread algorithm for position reconstruction in tracker detectors for particle physics. Its standard use is always accompanied...

  • Article
  • Open Access
7 Citations
3,504 Views
14 Pages

5 September 2022

In this paper, we present an overview of recent developments in the Feynman sum over paths approach for teaching introductory quantum mechanics to high school students and university undergraduates. A turning point in recent research is identified in...

  • Review
  • Open Access
10 Citations
2,990 Views
17 Pages

5 September 2022

A review of recent advances in the study of the energy splitting between excited isobaric analogue states is presented. Some of the experimental developments, and new approaches, associated with spectroscopy of the most proton-rich members of isobari...

  • Review
  • Open Access
4 Citations
4,659 Views
14 Pages

31 August 2022

We review the main scientific pictures of the universe developed from ancient times to Albert Einstein and underline that all of them treated the universe as a stationary system with unchanged physical properties. In contrast to this, 100 years ago A...

  • Review
  • Open Access
3 Citations
2,113 Views
11 Pages

31 August 2022

Over the last few decades, several experiments have used atomic nuclei as unique laboratories to probe the internal structure of the strongly interacting particles, namely hadrons. Indeed, the nucleus could be used as a revealing medium of the time e...

  • Article
  • Open Access
8 Citations
5,531 Views
22 Pages

25 August 2022

When gravity is quantum, the point structure of space-time should be replaced by a non-commutative geometry. This is true even for quantum gravity in the infra-red. Using the octonions as space-time coordinates, we construct pre-spacetime, pre-quantu...

  • Article
  • Open Access
1 Citations
1,975 Views
7 Pages

23 August 2022

This paper is concerned with limits on kinetic and magnetic energies and dissipation rates in forced flows that lead to dynamo action and a finite amplitude magnetic field. Rigorous results are presented giving upper and lower limits on the values of...

  • Article
  • Open Access
1 Citations
5,641 Views
20 Pages

11 August 2022

We all have in mind Einstein’s famous thought experiment in the elevator where we observe the free fall of a body, and then the trajectory of a light ray. Here, in addition to the qualitative aspect, the exact calculations are carried out, and...

  • Article
  • Open Access
2 Citations
2,179 Views
8 Pages

29 July 2022

We study linear torsional Alfvén waves in a magnetic flux tube with an arbitrary cross-section. We assume that the equilibrium magnetic field is propagating in the z-direction in Cartesian coordinates x,y, and z. The tube cross-section is boun...

  • Review
  • Open Access
3 Citations
2,694 Views
18 Pages

26 July 2022

In this short review, we focus on some of the subjects, related to J. Cleymans’ pioneering contribution of statistical approaches to the particle production process in heavy-ion collisions. We discuss these perspectives from the effects of stoc...

  • Review
  • Open Access
2,376 Views
14 Pages

24 July 2022

The concept of infinitesimal elastic deformation and the theory of elastic seismic waves was formed in the first part of the 19th century and was based mainly on the Fermat, Huygens and Snell developments in the theory of optics. At the same time, se...

  • Perspective
  • Open Access
1 Citations
2,687 Views
21 Pages

Laws of Spatially Structured Population Dynamics on a Lattice

  • Natalia L. Komarova,
  • Ignacio A. Rodriguez-Brenes and
  • Dominik Wodarz

22 July 2022

We consider spatial population dynamics on a lattice, following a type of a contact (birth–death) stochastic process. We show that simple mathematical approximations for the density of cells can be obtained in a variety of scenarios. In the cas...

  • Article
  • Open Access
1 Citations
3,065 Views
12 Pages

19 July 2022

In this paper, we provide an account of analytical results related to the Tsallis thermodynamics that have been the subject matter of a lot of studies in the field of high-energy collisions. After reviewing the results for the classical case in the m...

  • Article
  • Open Access
3 Citations
3,483 Views
13 Pages

18 July 2022

In this paper, the nuclear modification factors, RxA, are investigated for pion production in small system collisions, measured by PHENIX experiment at RHIC (Relativistic Heavy Ion Collider). The theoretical framework is the parton transverse momentu...

  • Article
  • Open Access
4 Citations
2,560 Views
13 Pages

13 July 2022

In the current paper, we argue that the ground state of a hadron contains a significant perturbative quantum chromodynamics (pQCD) core as the result of color gauge invariance and the values of chiral and gluon vacuum condensates. The evaluation with...

  • Opinion
  • Open Access
21 Citations
8,240 Views
77 Pages

29 June 2022

The present review takes steps from the domain of the shell model into open shell nuclei. The question posed in the title is to dramatize how far shell model approaches, i.e., many nucleons occupying independent-particle configurations and interactin...

  • Editorial
  • Open Access
2,622 Views
7 Pages

22 June 2022

When in 1988, I decided to start working on the physics of quark-gluon plasma and relativistic heavy-ion collisions, I was reasonably well-entrenched in my chosen field of low-energy nuclear reactions and break-up of light nuclei, having worked for o...

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Physics - ISSN 2624-8174