Zobrazeno 1 - 10
of 48
pro vyhledávání: '"Vesselin G. Gueorguiev"'
Autor:
Vesselin G. Gueorguiev, Andre Maeder
Publikováno v:
Symmetry, Vol 16, Iss 6, p 657 (2024)
This is a summary of the main results within the Scale-Invariant Vacuum (SIV) paradigm based on Weyl integrable geometry. We also review the mathematical framework and utilize alternative derivations of the key equations based on the reparametrizatio
Externí odkaz:
https://doaj.org/article/306d35c82ad84b158c99436b123309b2
Autor:
Andre Maeder, Vesselin G. Gueorguiev
Publikováno v:
Symmetry, Vol 15, Iss 11, p 1966 (2023)
On the basis of a general action principle, we revisit the scale invariant field equation using the cotensor relations by Dirac (1973). This action principle also leads to an expression for the scale factor λ, which corresponds to the one derived fr
Externí odkaz:
https://doaj.org/article/c73af89ee69e46efb5343d779a6f4a02
Autor:
Vesselin G. Gueorguiev, Andre Maeder
Publikováno v:
Universe, Vol 8, Iss 4, p 213 (2022)
We present a summary of the main results within the Scale Invariant Vacuum (SIV) paradigm as related to the Weyl Integrable Geometry (WIG) as an extension to the standard Einstein General Relativity (EGR). After a brief review of the mathematical fra
Externí odkaz:
https://doaj.org/article/34219463a1a14ea893094b0e90b7b917
Autor:
Vesselin G. Gueorguiev, Andre Maeder
Publikováno v:
Symmetry, Vol 13, Iss 3, p 522 (2021)
In this paper, we argue in favor of first-order homogeneous Lagrangians in the velocities. The relevant form of such Lagrangians is discussed and justified physically and geometrically. Such Lagrangian systems possess Reparametrization Invariance (RI
Externí odkaz:
https://doaj.org/article/1cbc419467f6407b8e7be8fb7c3bcd1f
Autor:
Vesselin G. Gueorguiev, Andre Maeder
Publikováno v:
Symmetry, Vol 13, Iss 3, p 379 (2021)
Based on the principle of reparametrization invariance, the general structure of physically relevant classical matter systems is illuminated within the Lagrangian framework. In a straightforward way, the matter Lagrangian contains background interact
Externí odkaz:
https://doaj.org/article/9c55f9a0001d49f98705c3680df895a6
Autor:
Vesselin G. Gueorguiev, Andre Maeder
Publikováno v:
Universe, Vol 6, Iss 8, p 108 (2020)
A new perspective on the Cosmological Constant Problem (CCP) is proposed and discussed within the multiverse approach of Quantum Cosmology. It is assumed that each member of the ensemble of universes has a characteristic scale a that can be used as i
Externí odkaz:
https://doaj.org/article/a2aefc47ce7e468d95b3caec62d446db
Autor:
Andre Maeder, Vesselin G. Gueorguiev
Publikováno v:
Universe, Vol 6, Iss 3, p 46 (2020)
The Scale Invariant Vacuum (SIV) theory rests on the basic hypothesis that the macroscopic empty space is scale invariant. This hypothesis is applied in the context of the Integrable Weyl Geometry, where it leads to considerable simplifications in th
Externí odkaz:
https://doaj.org/article/d191bd9f489a4f0eacd492f8bd6331a9
Autor:
Vesselin G. Gueorguiev, André Maeder
Publikováno v:
Monthly Notices of the Royal Astronomical Society. 504:4005-4014
Maxwell equations and the equations of General Relativity are scale invariant in empty space. The presence of charge or currents in electromagnetism or the presence of matter in cosmology are preventing scale invariance. The question arises on how mu
Autor:
André Maeder, Vesselin G. Gueorguiev
Publikováno v:
Astrophysics and Space Science. 366
We review the problem of the consistency between the observed values of the lunar recession from Lunar Laser Ranging (LLR) and of the increase of the length-of-the-day (LOD). From observations of lunar occultations completed by recent IERS data, we d
Autor:
André Maeder, Vesselin G. Gueorguiev
Publikováno v:
Universe
Volume 6
Issue 8
Universe, Vol 6, Iss 108, p 108 (2020)
Volume 6
Issue 8
Universe, Vol 6, Iss 108, p 108 (2020)
A new perspective on the Cosmological Constant Problem (CCP) is proposed and discussed within the multiverse approach of Quantum Cosmology. It is assumed that each member of the ensemble of universes has a characteristic scale a that can be used as i