A bstract We study the unitary Fermi gas in a harmonic trapping potential starting from microscopic theory limit of large charge and number fermion flavors N . In this regime, we present an algorithmic procedure for extracting data perturbation theory, order-by-order, without need other assumptions. perform gradient expansion interior particle cloud, sufficiently far cloud edge where density drops rapidly to zero. latter region first computation characterizing contribution terms. The...

Modernized version of the combined opto-acoustical gravitational wave detector OGRAN is presented. Located in deep underground Baksan Neutrino Observatory this setup aimed to work on program collapsing stars searching for multi-channel manner with neutrino telescope BUST. The both instruments have sensitivity allowing a registration collapses our Galaxy as rare events estimated probability [Formula: see text] year[Formula: text]. narrow band at kilohertz frequency limited by its acoustical...

In this paper, we estimate efficiency of a conceivable Euro-Asian network gravitational wave (GW) interferometers that might be realized having in mind plan construction third generation interferometer Novosibirsk region. Subsequently, some would composed, including four GW detectors. Among them there are the already active VIRGO (Italy) and KAGRA (Japan), Indian under construction—LIGO India Siberia mentioned above. The quality question is considered on base typical numerical criteria for...

A Euro-Asian network of four gravitational-wave (GW) interferometers is considered, taking into account the plan to create such a detector in Novosibirsk. The efficiency assessed by typical numerical criteria, which also depend on characteristics received signal. In this work, we calculate optimal orientation Novosibirsk for problem detecting GW radiation accompanying collapse progenitor star with an initial angular momentum. specificity scenario presence so-called. bar stage deformation,...

Three models with nonlinear realizations of conformal symmetry are discussed. The simplest model can only describe a universe expanding deceleration and does not include inflation. other equivalent up to variables reparametrization. All these contain ghost degrees freedom which may be excluded an additional the target space.

The problem of joint data processing from ground-based gravitational and neutrino detectors is considered in order to increase the detection efficiency collapsing objects Galaxy. development "neutrino - correlation" algorithm carried out within framework theory optimal filtration as applied well-known OGRAN BUST facilities located at BNO INR RAS. experience analyzing obtained during outburst supernova SN1987A used. Sequential steps are presented, formulas for estimating statistical a...

We study the unitary Fermi gas in a harmonic trapping potential starting from microscopic theory limit of large charge and number fermion flavors N. In this regime, we present an algorithmic procedure for extracting data perturbation theory, order-by-order, without need other assumptions. perform gradient expansion interior particle cloud, sufficiently far cloud edge where density drops rapidly to zero. latter region first computation characterizing contribution terms. The reproduces...

Possibility of experimental registration gravitational radiation scattered on wormholes was evaluated. Scattered could become the evidence wormhole gas theory explaining dark matter nature. The simplest model traversable static spherically symmetric used, which is limiting case for Bronnikov --- Ellis wormhole. Equations wave against background non-empty curved space--time were obtained in gauge, where trace a not equal to zero. It shown that equation reduced Klein Gordon Fock equation....

The problem of the event horizon in relativistic gravity is discussed. Singular solutions general relativity are well known. Schwarschild metric a spherical mass singular at zero ($r = 0$) and r_g$). Both features reflect existence phenomenon collapse for compact masses exceeding $3M_{\odot }$. A material particle crossing falls into central singularity according to classical theory relativity. In quantum gravity, there may be no singularity. physics currently being refined. promising...