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2014-04-17
05:09
Ab initio geometry and bright excitation of carotenoids: Quantum Monte Carlo and Many Body Green's Function Theory calculations on peridinin / Coccia, Emanuele ; Varsano, Daniele ; Guidoni, Leonardo
In this letter we report the singlet ground state structure of the full carotenoid peridinin by means of variational Monte Carlo (VMC) calculations. The VMC relaxed geometry has an average bond length alternation of 0.1165(10) {\AA}, larger than the values obtained by DFT (PBE, B3LYP and CAM-B3LYP) and shorter than that calculated at the Hartree-Fock (HF) level. [...]
arXiv:1404.4233.- 2014 - Published in : J. Chem. Theory Comput.: 10 (2014) , pp. 501-506 External link: Preprint

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2014-04-17
05:09
Flood avalanches in a semiarid basin with a dense reservoir network / Peter, Samuel J ; de Araújo, J C ; Araújo, N A M ; Herrmann, H J
This study investigates flood avalanches in a dense reservoir network in the semiarid north-eastern Brazil. The population living in this area strongly depends on the availability of the water from this network. [...]
arXiv:1404.4232.- 2014 - Published in : Journal of Hydrology 512 (2014) 408 External link: Preprint

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2014-04-17
05:09
The Dynamics of Emotional Chats with Bots: Experiment and Agent-Based Simulations / Tadic, Bosiljka ; Gligorijevic, Vladimir ; Skowron, Marcin ; Suvakov, Milovan
Quantitative research of emotions in psychology and machine-learning methods for extracting emotion components from text messages open an avenue for physical science to explore the nature of stochastic processes in which emotions play a role, e.g., in human dynamics online. Here, we investigate the occurrence of collective behavior of users that is induced by chats with emotional Bots [...]
arXiv:1404.4191.- 2014 - 16 p. External link: Preprint

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2014-04-17
05:09
Spatial Coherence Properties of Organic Molecules Coupled to Plasmonic Surface Lattice Resonances in the Weak and Strong Coupling Regimes / Shi, L ; Hakala, T K ; Rekola, H T ; Martikainen, J -P ; Moerland, R J ; Törmä, P
We study spatial coherence properties of a system composed of periodic silver nanoparticle arrays covered with a fluorescent organic molecule (DiD) film. The evolution of spatial coherence of this composite structure from the weak to the strong coupling regime is investigated by systematically varying the coupling strength between the localized DiD excitons and the collective, delocalized modes of the nanoparticle array known as surface lattice resonances. [...]
arXiv:1404.4160.- 2014 - 22 p. - Published in : Phys. Rev. Lett. 112 (2014) 153002 External link: Preprint

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2014-04-17
05:09
All optical diode based on dipole modes of Kerr microcavity in asymmetric L-shaped photonic crystal waveguide / Bulgakov, E N ; Sadreev, A F
A design of all optical diode in $L$-shaped photonic crystal waveguide is proposed that uses the multistability of single nonlinear Kerr microcavity with two dipole modes. Asymmetry of the waveguide is achieved by difference in coupling of the dipole modes with the left and right legs of waveguide. [...]
arXiv:1404.4145.- 2014 - Published in : . 178 (2014) 7 External link: Preprint

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2014-04-17
05:09
Relativistic R matrix and continuum shell model / Grineviciute, J ; Halderson, Dean
Background: The $R$ matrix formalism of Lane and Thomas has proven to be a convenient reaction theory for solving many-coupled channel systems. The theory provides solutions to bound states, scattering states, and resonances for microscopic models in one formalism. [...]
arXiv:1404.4170.- 2014 - Published in : Phys. Rev. C 85 (2012) 054617 External link: Preprint

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2014-04-17
05:09
Noncommutativity and Humanity -- Julius Wess and his Legacy / Djordjevic, Goran S
A personal view on Julius Wess's human and scientific legacy in Serbia and the Balkan region is given. Motivation for using noncommutative and nonarchimedean geometry on very short distances is presented. [...]
arXiv:1404.4300.- 2014 - 20 p. - Published in : Int. J. Mod. Phys. Conf. Ser. 13 (2012) 66 External link: Preprint

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2014-04-17
05:09
Massive Jackiw-Rebbi Model / Charmchi, Farid ; Gousheh, Siamak S
In this paper we analyze a generalized Jackiw-Rebbi (J-R) model in which a massive fermion is coupled to the kink of the $\lambda\phi^4$ model as a prescribed background field. We solve this massive J-R model exactly and analytically and obtain the whole spectrum of the fermion, including the bound and continuum states. [...]
arXiv:1404.4263.- 2014 - 10 p. - Published in : Nucl. Phys. B 883, (2014) p. 256 External link: Preprint

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2014-04-17
05:08
Halo-independent comparison of direct dark matter detection data: a review / Del Nobile, Eugenio
We review the halo-independent formalism, that allows to compare data from different direct dark matter detection experiments without making assumptions on the properties of the dark matter halo. We apply this method to spin-independent WIMP-nuclei interactions, for both isospin-conserving and isospin-violating couplings, and to WIMPs interacting through an anomalous magnetic moment..
arXiv:1404.4130.- 2014 - 21 p. - Published in : Advances in High Energy Physics 201 (2014) 4 External link: Preprint

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2014-04-17
05:08
Emergent Weyl fermions and the origin of $i=\sqrt{-1}$ in quantum mechanics / Volovik, G E ; Zubkov, M A
Conventional quantum mechanics is described in terms of complex numbers. However, all physical quantities are real. [...]
arXiv:1404.4084.- 2014 - Published in : Pis'ma Zh. Eksp. Teor. Fiz.: 99 (2014) , pp. 552-557 External link: Preprint

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