26 citations · 117 across the 17 of their papers we have counts for
17 papers
The Strong- Problem and its Gauge Axion solution as Evidence for Fundamental Strings
Gia Dvali, Lucy Komisel, Otari Sakhelashvili +1
The topological susceptibility of the QCD vacuum provides an understanding of -vacua as vacua of a Chern-Simons gauge theory. In this way, it gives an immediate proof of the phy…
On Time-Evolution in Quantum Gravity
Lasha Berezhiani, Gia Dvali, Otari Sakhelashvili
We derive an explicit BRST-exact operator identity for the bulk Hamiltonian in quantum gravity, working within a BRST-invariant quantization of General Relativity, treated as a low…
-meson from topological properties of the electroweak vacuum
Gia Dvali, Archil Kobakhidze, Otari Sakhelashvili
We further scrutinize the evidence for a recently suggested pseudo-scalar particle, the electroweak -meson. Its existence is demanded by matching the removal of the weak…
Similarities in the evaporation of saturated solitons and black holes
Giacomo Contri, Gia Dvali, Otari Sakhelashvili
It has been suggested some time ago that many black hole properties are not specific to gravity, but rather are shared by a large class of objects, the so-called saturons, that sat…
TeV Window to Grand Unification: Higgs's Light Color Triplet Partner
Gia Dvali, Otari Sakhelashvili, Anja Stuhlfauth
The color-triplet partner of the Higgs doublet, called a -particle, is a universal feature of Grand Unification. It has been shown some time ago that this particle can be access…
Coherent States in Gauge Theories: Topological Defects and Other Classical Configurations
Lasha Berezhiani, Gia Dvali, Otari Sakhelashvili
We present a formulation of coherent states as of consistent quantum description of classical configurations in the BRST-invariant quantization of electrodynamics. The quantization…
Consistent Canonical Quantization of Gravity: Recovery of Classical GR from BRST-invariant Coherent States
Lasha Berezhiani, Gia Dvali, Otari Sakhelashvili
We perform canonical quantization of General Relativity, as an effective quantum field theory below the Planck scale, within the BRST-invariant framework. We show that the promotio…
Electroweak meson
Gia Dvali, Archil Kobakhidze, Otari Sakhelashvili
We argue that the Standard Model is accompanied by a new pseudo-scalar degree of freedom, -meson, which cancels the topological susceptibility of the electroweak vacuum…
Hint to Supersymmetry from GR Vacuum
Gia Dvali, Archil Kobakhidze, Otari Sakhelashvili
The -matrix formulation of gravity suggests that the -vacuum structure must not be sustained by the theory. We point out that, when applied to the vacuum of general relativit…
Black-Hole-Like Saturons in Gross-Neveu
Gia Dvali, Otari Sakhelashvili
It has been argued recently that objects of maximal microstate entropy permitted by unitarity, the so-called saturons, have properties similar to black holes. We demonstrate the ex…
De Sitter space as BRST invariant coherent state of gravitons
Lasha Berezhiani, Gia Dvali, Otari Sakhelashvili
The -matrix formulation indicates that a consistent embedding of de Sitter state in quantum gravity is possible exclusively as an excited quantum state constructed on top of a v…
On dual formulation of Axion solution to strong-CP problem
Otari Sakhelashvili
An exact duality between axion with arbitrary potential and antisymmetric form-field has been derived some time ago. Using this duality, the axion solution to strong-CP problem has…
Standing Waves Braneworlds
Merab Gogberashvili, Irakli Mantidze, Otari Sakhelashvili +1
The class of non-stationary braneworld models generated by the coupled gravitational and scalar fields is reviewed. The model represents a brane in a space-time with single time an…
Geometrical Applications of Split Octonions
Merab Gogberashvili, Otari Sakhelashvili
It is shown that physical signals and space-time intervals modeled on split-octonion geometry naturally exhibit properties from conventional (3+1)-theory (e.g. number of dimensions…
Dimensional Reduction in 6D Standing Waves Braneworld
Otari Sakhelashvili
We found cosmological solution of the 6D standing wave braneworld model generated by gravity coupled to a massless scalar phantom-like field. By obtaining a full exact solution of…
6D Standing Wave Braneworld with Ghost Scalar Fields
Otari Sakhelashvili
The 6D braneworld with the phantom-like bulk scalar field is considered. We demonstrate pure gravitational localization of scalar field zero modes on the brane.
Numerical Solutions in 5D Standing Wave Braneworld
Merab Gogberashvili, Otari Sakhelashvili, Giorgi Tukhashvili
Within the 5D standing wave braneworld model numerical solutions of the equations for matter fields with various spins are found. It is shown that corresponding action integrals ar…