620 citations · 1.7k across the 15 of their papers we have counts for
15 papers
Massive Spin-2 fields of Geometric Origin in Curved Spacetimes
V. P. Nair, S. Randjbar-Daemi, V. Rubakov
We study the consistency of a model which includes torsion as well as the metric as dynamical fields and has massive spin-2 particle in its spectrum. The massive spin-2 mode reside…
Is gravitino still a warm dark matter candidate?
D. Gorbunov, A. Khmelnitsky, V. Rubakov
We make use of the phase space density approach to discuss gravitino as a warm dark matter candidate. Barring fine tuning between the reheat temperature in the Universe and superpa…
Primordial perturbations from slow-roll inflation on a brane
Kazuya Koyama, Andrew Mennim, V. A. Rubakov +2
In this paper we quantise scalar perturbations in a Randall-Sundrum-type model of inflation where the inflaton field is confined to a single brane embedded in five-dimensional anti…
Gauge theory solitons on noncommutative cylinder
S. V. Demidov, S. L. Dubovsky, V. A. Rubakov +1
We generalize to noncommutative cylinder the solution generation technique, originally suggested for gauge theories on noncommutative plane. For this purpose we construct partial i…
Quasi-localized states on noncommutative solitons
S. L. Dubovsky, V. A. Rubakov, S. M. Sibiryakov
We consider noncommutative gauge theories which have zero mass states propagating along both commutative and noncommutative dimensions. Solitons in these theories generically carry…
Gravity waves from inflating brane or Mirrors moving in adS
D. S. Gorbunov, V. A. Rubakov, S. M. Sibiryakov
We study tensor perturbations in a model with inflating Randall--Sundrum-type brane embedded in five-dimensional anti-de Sitter (adS) bulk. In this model, a natural {\it in}-va…
On models of gauge field localization on a brane
S. L. Dubovsky, V. A. Rubakov
We argue that any viable mechanism of gauge field localization should automatically imply charge universality on the brane. We study whether this condition is satisfied in the two…
Large and infinite extra dimensions
V. A. Rubakov
The emphasis in the developmet of theories with more than three spatial dimensions has recently shifted towards ``brane world'' picture, which assumes that ordinary matter (with po…
Kaon Physics with Light Sgoldstinos and Parity Conservation
D. S. Gorbunov, V. A. Rubakov
Superpartners of goldstino -- scalar and pseudoscalar sgoldstinos -- interact weakly with ordinary particles. One or both of them may be light. We consider a class of supersymmetri…
Is the electric charge conserved in brane world?
S. L. Dubovsky, V. A. Rubakov, P. G. Tinyakov
We discuss whether electric charge conservation may not hold in four-dimensional world in models with infinite extra dimensions, i.e., whether escape of charged particles from our…
Brane world: disappearing massive matter
S. L. Dubovsky, V. A. Rubakov, P. G. Tinyakov
In a brane (domain wall) scenario with an infinite extra dimension and localized gravity, bulk fermions and scalars often have bound states with zero 4-dimensional mass. In this wa…
Opening up extra dimensions at ultra-large scales
Ruth Gregory, Valery A. Rubakov, Sergei M. Sibiryakov
The standard picture of viable higher-dimensional theories is that extra dimensions manifest themselves at short distances only, their effects being negligible at scales larger tha…
Relaxation of the cosmological constant at inflation?
V. A. Rubakov
We suggest that the cosmological constant has been relaxed to its present, very small value during the inflationary stage of the evolution of the Universe. This requires relatively…
False vacuum decay in de Sitter space-time
V. A. Rubakov, S. M. Sibiryakov
We suggest a technique that explicitly accounts for the structure of an initial state of quantum field in the semiclassical calculations of path integral in curved space-time, and…
Ultra-High Energy Cosmic Rays: a Window to Post-Inflationary Reheating Epoch of the Universe?
V. A. Kuzmin, V. A. Rubakov
We conjecture that the highest energy cosmic rays beyond the Greisen-Zatsepin-Kuzmin cut-off may provide a unique window into the very early epoch of the Universe, namely, that of…