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  • Singularity avoidance in classical gravity from four-fermion interaction 
    Bambi, Cosimo; Malafarina, D.; Marcian`o, Antonino; Modesto, Leonardo (2014-05-26)
    We derive the dynamics of the gravitational collapse of a homogeneous and spherically symmetric cloud in a classical set-up endowed with a topological sector of gravity and a non-minimal coupling to fermions. The effective ...
  • Singularity avoidance in quantum-inspired inhomogeneous dust collapse 
    Liu, Yue; Malafarina, D.; Modesto, Leonardo; Bambi, Cosimo (2014-08-17)
    In a previous paper, some of us studied general relativistic homogeneous gravitational collapses for dust and radiation, in which the density profile was replaced by an effective density justified by some quantum gravity ...
  • Size effects in near-ultraviolet Raman spectra of few-nanometer-thick silicon-oninsulator nanofilms 
    Poborchii, Vladimir; Morita, Yukinori; Tada, Tetsuya; Geshev, Pavel I.; Utegulov, Zhandos; Volkov, Alexey (Journal of Applied Physics, 2016-04)
    We have fabricated Si-on-insulator (SOI) layers with a thickness h1 of a few nanometers and examined them by Raman spectroscopy with 363.8 nm excitation. We have found that phonon and electron confinement play important ...
  • Stochastic metastability by spontaneous localisation 
    Oikonomou, Th.; Nergis, A.; Lazarides, N.; Tsironis, G.P. (Chaos, Solitons & Fractals, 2014-12-01)
    Abstract Nonequilibrium, quasi-stationary states of a one-dimensional “hard” ϕ4 deterministic lattice, initially thermalised to a particular temperature, are investigated when brought into contact with a stochastic thermal ...
  • Strong laser-pulse-driven ionization and Coulomb explosion of hydrocarbon molecules 
    Bubin, Sergiy; Atkinson, Mackenzie; Varga, Kalman (2012)
    Field ionization and Coulomb explosion of small hydrocarbon molecules driven by intense laser pulses are studied in a combined theoretical and experimental framework. The spectra of ejected protons calculated by the ...
  • Study of the resonance α+13C interaction at low energies: Optimization of parameters of the beam shape 
    Yesenov, M.; Beznosko, Dmitriy; Duspayev, A.; Iakovlev, A. (International Conference on New Photo-detectors, 2015)
    About half of all elements heavier than iron are produced in a stellar environment through the s process, which involves a series of subsequent neutron captures and α decays. The reaction 13C(α,n)16O is considered to be ...
  • Technical manual: a survey of scintillating medium for high-energy particle detection 
    Baitenov, Adil; Iakovlev, Alexander; Beznosko, Dmitriy (2016)
    There are various particle detection methods used nowadays and the most common is using scintillators. Among scintillating materials, solid plastic and water-based liquid scintillators (WbLS) are the latest development. ...
  • Terminating black holes in asymptotically free quantum gravity 
    Bambi, Cosimo; Malafarina, D.; Modesto, Leonardo (2014-02-03)
    We study the homogeneous gravitational collapse of a spherical cloud of matter in a super-renormalizable and asymptotically free theory of gravity. We nd a picture that di ers substantially from the classical scenario. ...
  • The general solution for relativistic spherical shells 
    Kijowski, J.; Magli, G.; Malafarina, D. (2005)
    The general exact solution of the Einstein-matter field equations describing spherically symmetric shells satisfying an equation of state in closed form is discussed under general assumptions of physical reasonableness. ...
  • The “Horizon-T” Experiment: Extensive Air Showers Detection 
    Beisembaev, R . U .; Beisembaeva, E.A.; Dalkarov, O.D.; Ryabov, V.A.; Stepanov, A.V.; Vildanov, N.G.; Vildanova, M.I.; Zhukov, V.V.; Baigarin, K.A.; Beznosko, Dmitriy; Sadykov, T.X.; Suleymenov, N.S (arXiv.org, 2016)
    Horizon - T is a n innovative detector system constructed to study Extensive Air Showers (EAS) in the energy range above 10 16 eV coming from a wide range of zenith angles (0 o - 85 o ). The system ...
  • The instability of black hole formation in gravitational collapse 
    Joshi, Pankaj S.; Malafarina, D. (2011-01-11)
    We consider here the classic scenario given by Oppenheimer, Snyder, and Datt, for the gravitational collapse of a massive matter cloud, and examine its stability under the introduction of small tangential stresses. We show, ...
  • Theoretical concepts of unlimited-power reflectors, absorbers, and emitters with conjugately matched layers 
    Valagiannopoulos, Constantinos; Tretyakov, Sergei A. (American Physical Society, 2016-09-12)
    Recently, it was shown that by using special artificial materials it is possible to ensure that all electromagnetic modes of free space are conjugately matched to the modes of a material body and, thus, all modes deliver ...
  • Theory and application of explicitly correlated Gaussians 
    Mitroy, Jim; Bubin, Sergiy; Horiuchi, Wataru; Suzuki, Yasuyuki; Adamowicz, Ludwik; Cencek, Wojciech; Szalewicz, Krzysztof; Komasa, Jacek; Blume, D.; Varga, Ka´lma´n (2013)
    The variational method complemented with the use of explicitly correlated Gaussian basis functions is one of the most powerful approaches currently used for calculating the properties of few-body systems. Despite its ...
  • Thermodynamics and gravitational collapse 
    Malafarina, D.; Joshi, Pankaj S. (2011-06-19)
    It is known now that a typical gravitational collapse in general relativity, evolving from regular initial data and under physically reasonable conditions would end in either a black hole or a naked singularity final state. ...
  • Thermodynamics and the naked singularity in the Gamma-metric 
    Lochan, K.; Malafarina, D.; Singh, T.P. (2010-09-23)
    We investigate a possible way of establishing a parallel between the third law of black hole mechanics, and the strong version of the third law of thermodynamics. We calculate the surface gravity and area for a naked ...
  • The T2K Experiment 
    Beznosko, Dmitriy (2011)
    The T2K experiment is a long-baseline neutrino oscillation experiment. Its main goal is to measure the last unknown lepton sector mixing angle 13 by observing e appearance in a beam. It also aims to make a precision ...
  • The T2K ND280 Off-Axis Pi-Zero Detector 
    Beznosko, Dmitriy (2012)
    The Pi-Zero detector (PØD) is one of the subdetectors that makes up the off-axis near detector for the Tokai-to-Kamioka (T2K) long baseline neutrino experiment. The primary goal for the PØD is to measure the relevant ...
  • The T2K Neutrino Flux Prediction 
    Beznosko, Dmitriy (2012)
    The Tokai-to-Kamioka (T2K) experiment studies neutrino oscillations using an o -axis muon neutrino beam with a peak energy of about 0.6 GeV that originates at the J-PARC accelerator facility. Interactions of the neutrinos ...
  • Three lowest S states of 9Be+ calculated with including nuclear motion and relativistic and QED corrections 
    Stanke, Monika; Komasa, Jacek; Ke¸dziera, Dariusz; Bubin, Sergiy; Adamowicz, Ludwik (2008)
    We have performed high-accuracy quantum mechanical calculations for the three lowest S states of the beryllium ion 9Be+ . The nonrelativistic part of the calculations was done with the variational approach and explicitly ...
  • Time Dependence of Particle Creation from Accelerating Mirrors 
    Good, Michael R.R.; Anderson, Paul R.; Evans, Charles R. (2013-03-28)
    Particle production due to a quantized, massless, minimally coupled scalar eld in two-dimensional at spacetime with an accelerating mirror is investigated, with a focus on the time dependence of the process. We analyze ...