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P. Midodashvili

Publications and source records attributed to P. Midodashvili.

6 recordsLinked to original sources
arXiv2006

About quantum fluctuations and holographic principle in (4+n)-dimensional spacetime

In the article we present explicit expressions for quantum fluctuations of spacetime in the case of $(4+n)$-dimensional spacetimes, and consider their holographic properties and some implications for clocks, black holes and computation. We also consider quantum fluctuations and their holographic properties in ADD model and estimate the typical size and mass of the clock to be used in precise measurements of spacetime fluctuations. Numerical estimations of phase incoherence of light from extra-galactic sources in ADD model are also presented.

hep-th↗
arXiv2006

Holographic principle in spacetimes with extra spatial dimensions

F. Scardigli and R. Casadio have considered uncertainty principles which take into account the role of gravity and possible existence of extra spatial dimensions. They have argued that the predicted number of degrees of freedom enclosed in a given spatial volume matches the holographic counting only for one of the available generalization and without extra dimensions. Taking into account the additional inevitable source of uncertainty in distance measurement, which is missed in their approach, we show that the holographic properties of the proposed uncertainty principle is recovered in the models with extra spatial dimensions.

hep-th↗
arXiv2004

Fermions on the brane in 6D with nonsingular exponential scale factors

We introduce new realistic brane-solutions with exponential scale factors in the 6D-space-time. We show that for these solutions the zero modes of all bulk fields are sharply localized at different positions on the brane and have "Gaussian shape" wave-functions in the extra space. We also explicitly show that in the model there are cases when exactly three fermion generations naturally arise only through gravity. Because of localized fermion modes are also stuck at different positions in the extra space, there is possibility to provide a framework for natural explaining the fermion mass hierarchy in terms of higher dimensional geography.

hep-th↗
arXiv2003

Gravitational Trapping of the Bulk Fields in 6D

We present two new solutions to Einstein's equations in (1+5)-spacetime with a positive bulk cosmological constant. One solution has increasing and another solution decreasing bounded scale function without singularities in the range from the origin r=0 to the radial infinity. For the both solutions it is shown that all local fields are localized near the origin r=0 in the extra space through the gravitational interaction.

hep-th↗
arXiv2003

Gravitational Localization of Matters in 6D

We present a new 3-brane solution to Einstein's equations in (1+5)-spacetime with a negative bulk cosmological constant. This solution is a stringlike defect solution with decreasing scale function approaching a finite non-zero value in the radial infinity. It is shown that all local fields are localized on the brane only through the gravitational interaction.

hep-th↗