1. A New Equation for a Scalar Field from Thermodynamics First Law and Its Cosmological Implications

   • Everton M. C. Abreu
   • Edésio M. Barboza Jr.
   • Jorge Ananias Neto

   OriginalPaper 24 March 2021 Pages: 1 - 10

   

2. Large-scale Fluctuations of Dark Energy and the Inhomogeneous Anisotropic Expansion of the Universe

   • W. T. Chyla

   OriginalPaper 24 March 2021 Pages: 11 - 23

   

3. Generation of Gravitational Waves by a Standing Electromagnetic Wave

   • A. N. Morozov
   • V. I. Pustovoit
   • I. V. Fomin

   OriginalPaper 24 March 2021 Pages: 24 - 29

4. Stability of the Cosmological System of Degenerated Scalarly Charged Fermions and Higgs Scalar Fields. I. Mathematical Model of Linear Plane Perturbations

   • Yu. G. Ignat’ev

   OriginalPaper 24 March 2021 Pages: 30 - 35

5. Stability of the Cosmological System of Degenerate Scalarly Charged Fermions and Higgs Scalar Fields. II. Evolution of Short-wave Perturbations

   • Yu. G. Ignat’ev

   OriginalPaper 24 March 2021 Pages: 36 - 41

   

6. The Bakry-Émery Ricci Tensor: Application to Mass Distribution in Space-time

   • Ghodratallah Fasihi-Ramandi

   OriginalPaper 24 March 2021 Pages: 42 - 46

7. Varying \(\boldsymbol{\Lambda}\) Theory Revisited

   • YuHong Fang
   • Naveen K. Singh

   OriginalPaper 24 March 2021 Pages: 47 - 53

   

8. Evidence for an Effective Gravitational Constant from the Laboratory Measurements

   • J. P. Mbelek
   • L. B. Ungem

   OriginalPaper 24 March 2021 Pages: 54 - 62

   

9. Analogue of Aharonov–Bohm Effect in the Presence of a Magnetic Field Under the Influence of Coulomb-type Potentials in Topological Defect Space-time

   • Faizuddin Ahmed

   OriginalPaper 24 March 2021 Pages: 63 - 67

10. Interacting Anisotropic Ghost Dark Energy Model in \(\boldsymbol{f(R,T)}\) Theory of Gravity

    • Kanika Das
    • Jumi Bharali

    OriginalPaper 24 March 2021 Pages: 68 - 77

    

11. Remarks on Nonsingular Models of Hayward and Magnetized Black Hole with Rational Nonlinear Electrodynamics

    • S. I. Kruglov

    OriginalPaper 24 March 2021 Pages: 78 - 84

    

12. Vorticity of Matter or Vorticity of Space?

    • Elmo Benedetto
    • Gerardo Iovane
    • Ettore Laserra

    OriginalPaper 24 March 2021 Pages: 85 - 88

13. Big Rip and Big Crunch Cosmological Models in a Gravitational Field with Torsion

    • M. A. Bakry
    • Aryn T. Shafeek

    OriginalPaper 24 March 2021 Pages: 89 - 104