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V. V. Kiselev

Publications and source records attributed to V. V. Kiselev.

At least 19 recordsLinked to original sources
arXiv2026

Causal Space-Time Structure and non-Hausdorff Extension of Schwarzschild Black Hole Interior

Cones of future and past are rigorously constructed under the horizon of black hole by completions of geodesics continued from causally connected space-time regions outside the black hole interior. Treating the Schwarzschild black hole as a zero charge limit of Reissner--Nordsrøm black hole reforms the Penrose--Carter diagram into the infinite band that excludes the closed proper-time cycles under the geodesic motion. The marginal trajectories between the cones of future and past compose paths common with a compact non-Hausdorff spherical extension of black hole interior forming the thermal bath for particles fallen to the black hole.

gr-qc↗
arXiv2025

Cut-off scale of quantum gravity as a sign to unify interactions

Dynamics of gravity interaction with matter at one-loop level of effective quantum field theory naturally sets the cut-off scale $Λ_E$ in a sub-Planckian region through incorporating the gauge coupling constant $α(Λ_E)$ and the reduced Planckian mass $\tilde m_\text{pl}$ into relation $ Λ_E\sim \tilde m_\text{pl}\,α(Λ_E)/(4π)$ numerically yielding $Λ_E\sim 10^{16}$ GeV. Such two scales are empirically inherent for an inflationary cosmology.

hep-th↗
arXiv2025

Reciprocity in Heavy Quark Fragmentation Function

At high energies a form of fragmentation function for a heavy quark into a hadron is substantiated to agree with a reciprocity relation to the distribution of heavy quark as the virtual parton in the hadron. The relevance of the relation is analysed in its application to empirical data.

hep-ph↗
arXiv2025

Cosmological Constant Suppression in Non-Stationary Scalar Covariant State

We study a spatial-temporal structure of quantum fluctuations in the stress-energy tensor of zero-point modes for a scalar field in order to formulate a covariant model. The model describes an invariant vacuum contribution to the cosmological constant in the non-stationary coherent state in a finite volume. Bare and effective mean values of vacuum energy density are compared.

hep-th↗
arXiv2023

Proof to count bound state nodes in supersymmetric quantum mechanics

A normalizable static supersymmetric bound ground state annihilated by the super-generators has got zero number of internal nodes in the framework of one-dimensional supersymmetric quantum mechanics. The super-generator transformations between excited super-partner bound states as combined with the standard technique of Wronskian provides an elegant and self-sufficient way to derive the equality of internal nodes amount to the number of consequent excitation.

hep-th↗
arXiv2020

Extra dimensions and its segregation during evolution

A special isotropic energy-momentum tensor causes an anisotropic dynamical segregation of contracting extra dimensions in contrast to expanding dimensions, provided initial data put different arrows of time evolution. Features of such the configuration are problematic and in question.

physics.gen-ph↗
arXiv2017

Quark-diquark structure and masses of doubly charmed baryons

The finite size of doubly heavy diquark gives a positive correction to the masses of baryons calculated in the local diquark approximation. We evaluate this correction for the basic states of doubly charmed baryons to give quite accurate predictions actual for current searches of those baryons at LHCb: $m[{Ξ_{cc}^{1/2}}^{+}]\approx m[{Ξ_{cc}^{1/2}}^{++}]=3615\pm 55$ MeV and $m[{Ξ_{cc}^{3/2}}^{+}]\approx m[{Ξ_{cc}^{3/2}}^{++}]=3747\pm 55$ MeV.

hep-ph↗
arXiv2016

Production of quarkonia and doubly heavy baryons in $pp$-collisions with duality approach

In present work we discuss the production of heavy quarkonia and diquarks in $pp$-interactions. The aim is to take into account the production of bound states of quarks originating from independent parton scatterings. This production is regulated by constraints on the invariant mass of constituents. Such an approach leads to larger value of the diquark production cross section than traditional consideration in single parton scattering. This production mechanism of doubly heavy baryons can sooner be verified by modern experiments (e.g. LHCb). We also discuss related contributions to double and associated quarkonium production.

hep-ph↗
arXiv2015

Mixing of $η- η'$ in charge-exchange reactions and decays of mesons with heavy quarks

Involving of elastic rescattering and annihilation of quark-antiquark pairs in a final state allows us to explain a dependence of ratio for cross sections of $η'$ and $η$ mesons versus transfer momentum in charge exchange reactions. We estimate the mixing angle of mesons with isoscalar states of $\bar u u+\bar d d$ and $\bar s s$ of hidden strangeness. The evaluation includes the consistent description of yield ratio for $η'$ and $η$ mesons in decays of $B^0$, $B^0_s$ and $J/ψ$ mesons.

hep-ph↗
arXiv2015

Global shift symmetry and vacuum energy of matter fields

We construct the model incorporating both an arbitrary shift of cosmological constant and Goldstone boson corresponding to the spontaneous breaking down the global shift symmetry in the matter action. The gravity breaks down the symmetry explicitly and transforms the Goldstone boson to the inflaton field.

gr-qc↗
arXiv2015

Inflaton as a pseudo-Goldstone boson of vacuum energy shift symmetry

The exact symmetry induced by the global shift of energy scale for the cosmological constant in the action of matter fields is spontaneously broken by setting the density of real vacuum energy and explicitly broken by the gravity that means the existence of Nambu--Goldstone boson, which transforms into the pseudo-Goldstone boson due to the gravity. We identify this boson with the inflaton in the Einstein frame of action for the fields, while the breaking is induced by a non-minimal interaction of boson with the scalar curvature in the Jordan frame. The role of Galilean symmetry of field equation is emphasized in the procedure of fixing some terms in the bare action.

gr-qc↗
arXiv2014

Quantum origin of suppression for vacuum fluctuations of energy

By example of a model with a spatially global scalar field, we show that the energy density of zero-point modes is exponentially suppressed by an average number of field quanta in a finite volume with respect to the energy density in the stationary state of minimal energy. We describe cosmological implications of mechanism.

gr-qc↗
arXiv2014

Installing of cosmological constant

An artificial scale of observable cosmological constant is dynamically related to its natural bare value due to an installation of relevant coherent state for the inflationary field in a finite volume of early Universe, because of exponential suppression of probability to find the state with zero number of quanta. Homogeneous quantum fluctuations of the field actually put hard constraints on the total amount of inflation.

gr-qc↗
arXiv2012

Thermodynamical instability of black holes

In contrast to Hawking radiation of black hole with a given spacetime structure, we consider a competitive transition due to a heat transfer from a hotter inner horizon to a colder outer horizon of Kerr black hole, that results in a stable thermodynamical state of extremal black hole. In this process, by supposing an emission of gravitational quanta, we calculate the mass of extremal black hole in the final state of transition.

gr-qc↗
arXiv2012

CMBR anisotropy in the framework of cosmological extrapolation of MOND

A modified gravity involving a critical acceleration, as empirically established at galactic scales and successfully tested by data on supernovae of type Ia, can fit the measured multipole spectrum of anisotropy in the cosmic microwave background radiation, so that a dark sector of Universe is constructively mimicked as caused by the dynamics beyond the general relativity. Physical consequences, verifiable predictions and falsifiable issues are listed and discussed.

gr-qc↗