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Physics: Recent submissions

  • “Isotope effect” of hydrogen and deuterium interaction with vanadium alloys VCrTi 
    Kenzhina, I.; Kulsartov, T.; Chikhray, Y.; Shestakov, V.; Tolebay, A.; Askerbekov, S.; Tazhibayeva, I.; Gordienko, Y.; Ponkratov, Y.; Zaurbekova, Zh.; Mukanova, A. (Materials Today: Proceedings, 2017-01-01)
    Abstract V-Ti-Cr vanadium alloys have many perspective applications, particularly, they are considered as a main structural material of the first wall and blanket of fusion reactor with lithium coolant. Also, they are used ...
  • Group theory, entropy and the third law of thermodynamics 
    Canturk, Bilal; Oikonomou, Thomas; Bagci, G. Baris (Annals of Physics, 2017-02-01)
    Abstract Curado et al. (2016) have recently studied the axiomatic structure and the universality of a three-parameter trace-form entropy inspired by the group-theoretical structure. In this work, we study the group-theoretical ...
  • Universal all-particle explicitly-correlated Gaussians for non-Born–Oppenheimer calculations of molecular rotationless states 
    Bubin, Sergiy; Formanek, Martin; Adamowicz, Ludwik (Chemical Physics Letters, 2016-03-01)
    Abstract Complex explicitly correlated one-center all-particle Gaussian functions (CECGs) are tested as basis functions for molecular non-Born–Oppenheimer (non-BO) calculations. The tests concern the complete spectrum of ...
  • Singlet–triplet energy splitting between 1D and 3D (1s22snd), n=3, 4, 5, and 6, Rydberg states of the beryllium atom (9Be) calculated with all-electron explicitly correlated Gaussian functions 
    Sharkey, Keeper L.; Bubin, Sergiy; Adamowicz, Ludwik (Chemical Physics Letters, 2014-11-25)
    Abstract Accurate variational nonrelativistic quantum-mechanical calculations are performed for the five lowest 1D and four lowest 3D states of the 9Be isotope of the beryllium atom. All-electron explicitly correlated ...
  • Relaxation of non-isothermal hot dense plasma parameters 
    Kodanova, S.K.; Issanova, M.K.; Amirov, S.M.; Ramazanov, T.S.; Tikhonov, A.; Moldabekov, Zh.A. (Matter and Radiation at Extremes, 2017-09-06)
    Abstract The relaxation of temperature, coupling parameters, the excess part of equation of state, and the correlation energy of the non-isothermal hot dense plasmas are considered on the basis of the method of effective ...
  • Intrinsic photoluminescence Stokes shift in semiconductors demonstrated by thin-film CdS formed with pulsed-laser deposition 
    Ullrich, B.; Ariza-Flores, D.; Bhowmick, M. (Thin Solid Films, 2014-05-02)
    Abstract While not reported in the literature, by employing highly oriented, semi-insulating, thin-film CdS as test material, we present the observation of the intrinsic photoluminescence Stokes shift in a semiconductor. ...
  • Misusing the entropy maximization in the jungle of generalized entropies 
    Oikonomou, Thomas; Bagci, G. Baris (Physics Letters A, 2017-01-30)
    Abstract It is well-known that the partition function can consistently be factorized from the canonical equilibrium distribution obtained through the maximization of the Shannon entropy. We show that such a normalized and ...
  • Wide-angle absorption of visible light from simple bilayers 
    PAPADIMOPOULOS, ATHANASIOS N.; KANTARTZIS, NIKOLAOS V.; TSITSAS, NIKOLAOS L.; Valagiannopoulos, Constantinos (Optical Society of America, 2017-12-08)
    Color-selective absorption of light is a very significant operation used in numerous applications, from photonic sensing and switching to optical signal modulation and energy harnessing. We demonstrate angle-insensitive ...
  • Classical Collapse to Black Holes and Quantum Bounces: A Review 
    Malafarina, Daniele (Universe, 2017-05-26)
    In the last four decades, different programs have been carried out aiming at understanding the final fate of gravitational collapse of massive bodies once some prescriptions for the behaviour of gravity in the strong field ...
  • Black supernovae and black holes in non-local gravity 
    Bambi, Cosimo; Malafarina, Daniele; Modesto, Leonardo (ArXiv, 2016-04-22)
    In a previous paper, we studied the interior solution of a collapsing body in a non-local theory of gravity super-renormalizable at the quantum level. We found that the classical singularity is replaced by a bounce, after ...
  • Essentials of Endorheic Basins and Lakes: A Review in the Context of Current and FutureWater Resource Management and Mitigation Activities in Central Asia 
    Yapiyev, Vadim; Sagintayev, Zhanay; Inglezakis, Vassilis J.; Samarkhanov, Kanat; Verhoef, Anne (Water, 2017-10-21)
    Endorheic basins (i.e., land-locked drainage networks) and their lakes can be highly sensitive to variations in climate and adverse anthropogenic activities, such as overexploitation of water resources. In this review ...
  • Observational properties of rigidly rotating dust configurations 
    Ilyas, Batyr; Yang, Jinye; Malafarina, Daniele; Bambi, Cosimo (European Physical Journal C: Particles and Fields, 2017-07-11)
    We study the observational properties of a class of exact solutions of Einstein’s field equations describing stationary, axially symmetric, rigidly rotating dust (i.e. noninteracting particles).We ask the questionwhether ...
  • On horizonless temperature with an accelerating mirror 
    Good, Michael R.R.; Yelshibekova, Khalykbek; Chin Ong, Yen (ArXiv, 2017-03-03)
    A new solution of a unitary moving mirror is found to produce nite energy and emit thermal radiation despite the absence of an acceleration horizon. In the limit that the mirror approaches the speed of light, the model ...
  • Inherent photoluminescence Stokes shift in GaAs 
    Ullrich, Bruno; Singh, Akhilesh K.; Barik, Puspendu; Xi, Haowen; Bhowmick, Mithun (Optics letters, 2015-06-01)
    The intrinsic photoluminescence Stokes shift, i.e., the energy difference between optical band gap and emission peak, of 350 μm thick semi-insulating GaAs wafers is found to be 4 meV at room temperature. The result is based ...
  • Manipulating polarized light with a planar slab of black phosphorus 
    Valagiannopoulos, Constantinos; Mattheakis, Marios; Shirodkar, Sharmila N; Kaxiras, Efthimios (Journal of Physics Communications, 2017-11-08)
    Wave polarization contains valuable information for electromagnetic signal processing; thus, the ability to manipulate it, can be extremely useful in modeling photonic devices. In this work, we propose designs comprised ...
  • Photoluminescence lineshape of ZnO 
    Ullrich, Bruno; Singh, Akhilesh K.; Bhowmick, Mithun; Barik, Puspendu; Ariza-Flores, David; Xi, Haowen; Tomm, Jens W. (American Institute of Physics, 2014)
    The merger of the absorption coefficient dispersion, retrieved from transmission by the modified Urbach rule introduced by Ullrich and Bouchenaki [Jpn. J. Appl. Phys. 30, L1285, 1991], with the extended Roosbroeck-Shockley ...
  • Functional Metaplasticity of Hippocampal Schaffer Collateral-CA1 Synapses Is Reversed in Chronically Epileptic Rats 
    Rehberg, Mirko; Kirschstein, Timo; Guli, Xiati; Müller, Steffen; Rohde, Marco; Franz, Denise; Tokay, Tursonjan; Köhling, Rüdiger (Neural Plasticity, 2017-10-02)
    Spatial learning and associating spatial information with individual experience are crucial for rodents and higher mammals. Hence, studying the cellular and molecular cascades involved in the key mechanism of information ...
  • Examination of nanosecond laser melting thresholds in refractory metals by shear wave acoustics 
    Abdullaev, A.; Muminov, B.; Rakhymzhanov, A.; Mynbayev, N.; Utegulov, Z. N. (American Institute of Physics, 2017-07-12)
    Nanosecond laser pulse-induced melting thresholds in refractory (Nb, Mo, Ta and W) metals are measured using detected laser-generated acoustic shear waves. Obtained melting threshold values were found to be scaled with ...
  • Waves in hyperbolic and double negative metamaterials including rogues and solitons 
    Boardman, A D; Alberucci, A; Assanto, G; Grimalsky, V V; Kibler, B; McNiff, J; Nefedov, I S; Rapoport, Yu G; Valagiannopoulos, Constantinos (Nanotechnology, 2017-10-20)
    The topics here deal with some current progress in electromagnetic wave propagation in a family of substances known as metamaterials. To begin with, it is discussed how a pulse can develop a leading edge that steepens and ...
  • Mitigating Snell’s-Law Reflection and Transmission with Metasurfaces of Ordinary Dielectrics 
    Tsitsas, N. L.; Valagiannopoulos, Constantinos (IEEE, 2017)
    Obtaining anomalous reflection and transmission (namely propagation along directions different from those predicted by Snell’s law) is investigated for plane waves impinging on a planar periodic metasurface composed of two ...