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Relevant bibliographies by topics / Paire annihilante

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Academic literature on the topic 'Paire annihilante'

Author: Grafiati

Published: 4 June 2021

Last updated: 6 February 2022

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Journal articles on the topic "Paire annihilante"

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Calucci, Giorgio. "Electromagnetic decay of Monopole–Antimonopole pair." International Journal of Modern Physics A 33, no. 12 (2018): 1850068. http://dx.doi.org/10.1142/s0217751x18500689.

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A Monopole–Antimonopole pair could annihilate producing a photon shower: Some aspects of the shower like the multiplicity distribution and angular correlations are investigated within a model suitable for processes with high multiplicities and therefore difficult to deal with standard perturbative treatment. The possible production of electron–positron pairs is also considered.

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Tsuchida, Satoshi, and Masaki Mori. "The electron plus positron spectrum from annihilation of Kaluza–Klein dark matter in the Galaxy." International Journal of Modern Physics D 26, no. 09 (2017): 1750095. http://dx.doi.org/10.1142/s021827181750095x.

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The lightest Kaluza–Klein particle (LKP), which appears in the theory of universal extra dimensions (UED), is one of the good candidates for cold dark matter (CDM). When LKP pairs annihilate around the center of the Galaxy where CDM is concentrated, there are some modes which produce electrons and positrons as final products, and we categorize them into two components. One of them is the “line” component, which directly annihilates into electron–positron pair. Another one is the “continuum” component, which consists of secondarily produced electrons and positrons via some decay modes. Before r

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Saurabh, Ayush, and Tanmay Vachaspati. "Monopole–antimonopole: interaction, scattering and creation." Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences 377, no. 2161 (2019): 20190143. http://dx.doi.org/10.1098/rsta.2019.0143.

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The interaction of a magnetic monopole–antimonopole pair depends on their separation as well as on a second ‘twist’ degree of freedom. This novel interaction leads to a non-trivial bound state solution known as a sphaleron and to scattering in which the monopole–antimonopoles bounce off each other and do not annihilate. The twist degree of freedom also plays a role in numerical experiments in which gauge waves collide and create monopole–antimonopole pairs. Similar gauge wavepacket scatterings in the Abelian–Higgs model lead to the production of string loops that may be relevant to superconduc

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Bishop, Morgan, Anthony J. Macula, Kayla Nimmo, Lauren Wood, Wendy K. Pogozelski, and Thomas E. Renz. "Group Testing to Annihilate Pairs Applied to DNA Cross-Hybridization Elimination Using SYBR Green I." Journal of Computational Biology 14, no. 1 (2007): 84–96. http://dx.doi.org/10.1089/cmb.2006.0114.

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Ilyenkov, A. V., L. V. Kreminskaya, M. S. Soskin, and M. V. Vasnetsov. "Birth, Evolution and Annihilation of Phase Singularities in the Propagation of a Laser Beam Passed Through a Self-Focusing Strontium Barium Niobate Crystal." Journal of Nonlinear Optical Physics & Materials 06, no. 02 (1997): 169–80. http://dx.doi.org/10.1142/s0218863597000150.

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We report the first observations and the mechanism of natural nucleation, propagation and annihilation of optical vortices in a laser beam with initially smooth Gaussian wave front passed through self-focusing photorefractive strontium barium niobate crystal. Wave-front distortions due to the formation of thermal-induced nonlinear lens lead to the origin of phase singularities. Pairs of opposite topological charge screw wave-front dislocations nucleate and annihilate through a formation of limited edge dislocations. In a free-space propagation the alternating sign vortices array nested in the

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Backerra, Anna C. M. "The Twin Physics Interpretation of Gravitational Waves." Applied Physics Research 10, no. 1 (2017): 23. http://dx.doi.org/10.5539/apr.v10n1p23.

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Gravitational waves may originate in two approaching black holes, circling around each other until they merge together. This phenomenon is considered by using twin physics, based upon a complementary mathematical language, after fitting Einstein’s idea about the relationship between time and space into it. According to the description obtained, the two black holes are annihilated as soon as they touch each other; only after a rearrangement of the constituent Heisenberg-units, these being units of potential energy, one new black hole is generated. During this rearrangement, a pair of oppositely

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Zhao, Bu Da, and Ming Xiang. "Skyrmion Excitations in Graphene." Advanced Materials Research 887-888 (February 2014): 960–65. http://dx.doi.org/10.4028/www.scientific.net/amr.887-888.960.

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By making use of theφ-mapping topological current theory and the decomposition of gauge potential theory, we investigate the skyrmion excitations of (2+1)-dimensional graphene. It is shown that the topological numbers are Hopf indices and Brower degrees. Based on the bifurcation theory of theφ-mapping theory, it is founded that the skyrmions can be generated or annihilated at the limit point (the generation and annihilation of skyrmion-antiskyrmion pairs).

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MAO, G., S. CHIBA, W. GREINER, and K. OYAMATSU. "VACUUM DISCHARGE AS A POSSIBLE SOURCE OF GAMMA-RAY BURSTS." International Journal of Modern Physics E 09, no. 02 (2000): 185–92. http://dx.doi.org/10.1142/s0218301300000118.

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We propose that spontaneous particle–anti-particle pair creations from the discharged vacuum caused by the strong interactions in dense matter are major sources of γ-ray bursts. Two neutron star collisions or black-hole-neutron star mergers at cosmological distance could produce a compact object with its density exceeding the critical density for pair creations. The emitted anti-particles annihilate with corresponding particles at the ambient medium. This releases a large amount of energy. We discuss the spontaneous [Formula: see text] pair creations within two neutron star collision and estim

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Ian Bradley, D., Shaun N. Fisher, Anthony M. Guénault, et al. "Annihilation of an AB/BA interface pair in superfluid helium-3 as a simulation of cosmological brane interaction." Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences 366, no. 1877 (2008): 2803–12. http://dx.doi.org/10.1098/rsta.2008.0078.

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This study presents measurements of the transport of quasiparticle excitations in the B phase of superfluid 3 He at temperatures below 0.2 T c . We find that creating and then removing a layer of A-phase superfluid leads to a measurable increase in the thermal impedance of the background B phase. This increase must be due to the survival of defects created as the AB and BA interfaces on either side of the A-phase layer annihilate. We speculate that a new type of defect may have been formed. The highly ordered A–B interface may be a good analogy for branes discussed in current cosmology. If so,

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Fraija, N., E. Aguilar-Ruiz, and A. Galván-Gámez. "Electron–positron pair plasma in TXS 0506+056 and the ‘neutrino flare’ in 2014–2015." Monthly Notices of the Royal Astronomical Society 497, no. 4 (2020): 5318–25. http://dx.doi.org/10.1093/mnras/staa2284.

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ABSTRACT The detection of a prolonged flaring activity from blazar TXS 0506+056 in temporal and spatial coincidence with the energetic neutrino IceCube-170922A provided evidence about the photohadronic interactions in this source. However, analysis of the archival neutrino and multiwavelength data from the direction of this blazar between 2014 September and 2015 March revealed a ‘neutrino flare’ without observing quasi-simultaneous activity in the gamma-ray bands, posing challenges to established models. Electron–positron (e±) pairs generated from the accretion discs have been amply proposed a

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Dissertations / Theses on the topic "Paire annihilante"

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Ghobber, Saifallah. "Paires annihilantes en analyse harmonique." Phd thesis, Université d'Orléans, 2011. http://tel.archives-ouvertes.fr/tel-00662694.

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Cette thèse porte sur l'étude de certains aspects du principe d'incertitude en analyse harmonique.Historiquement le principe d'incertitude fut énoncé en 1927 par Heisenberg qui a montré unepropriété fondamentale de la mécanique quantique qui dit qu'il est impossible de mesurer, avecprécision, à la fois la position et la vitesse d'une particule. Le but de cette thèse est d'étendre certainsrésultats concernant les paires annihilantes à deux contextes.Dans la première partie nous étendons le principe d'incertitude local et les principes d'incertitudede Benedicks-Amrein-Berthier, de Shubin-Vakilia

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Klaja, Hubert. "Autour des projections orthogonales : image numérique, principe d’incertitude et problème du sous-espace invariant." Thesis, Lille 1, 2014. http://www.theses.fr/2014LIL10036/document.

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Dans cette thèse en théorie des opérateurs, on s’intéresse aux projections orthogonales, à l’image numérique d’un opérateur agissant sur un espace de Hilbert, au principe d’incertitude, au problème du sous-espace invariant et aux perturbations d’opérateurs diagonaux.Après un premier chapitre introductif, on s’intéresse à l’image numérique d’un produit de projections orthogonales et aux applications possibles. On donne une formule explicite de l’image numérique d’un produit de projections orthogonales en fonction de son spectre. On montre comment reconstruire une partie du spectre d’un produit

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Conference papers on the topic "Paire annihilante"

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Kuroiwa, Masahiro, Tomohiro Tsuji, and Shigeomi Chono. "Numerical and Experimental Studies of Liquid Crystalline Flow Induced by Annihilation of Paired Defects." In ASME/JSME 2007 5th Joint Fluids Engineering Conference. ASMEDC, 2007. http://dx.doi.org/10.1115/fedsm2007-37015.

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Numerical and experimental studies of liquid crystalline flow induced by the annihilation of paired defects have been achieved by using the Doi theory coupled with the Marrucci-Greco potential. The molecular orientation distribution function is approximated by a series of spherical harmonic functions, to reduce the computational task. It is empirically known that the defects with different types of molecular orientation configuration attract each other, and finally annihilate. During this annihilation process, the liquid crystalline flow will be induced through the rotation of the molecular or

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Rigby, David L., and James D. Heidmann. "Improved Film Cooling Effectiveness by Placing a Vortex Generator Downstream of Each Hole." In ASME Turbo Expo 2008: Power for Land, Sea, and Air. ASMEDC, 2008. http://dx.doi.org/10.1115/gt2008-51361.

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Calculations are presented demonstrating the effect of placing a delta vortex generator downstream of a film cooling hole. The effects of blowing ratio, density ratio, and spanwise pitch are included in the study. Flow over a flat plate with film cooling holes oriented at a 30 degree angle was investigated. The Reynolds numbers based on the freestream velocity and the hole diameter was 11,300. The simulation was performed using the Glenn-HT code, a full three-dimensional Navier-Stokes solver using the Wilcox k-ω turbulence model. A structured multi-block grid was used with approximately one mi

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Xiao, Hui, Yaakov Bar-Shalom, and Xu Chen. "Model-Based Sparse Information Recovery by a Collaborative Sensor Management." In ASME 2018 Dynamic Systems and Control Conference. American Society of Mechanical Engineers, 2018. http://dx.doi.org/10.1115/dscc2018-9088.

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This paper considers the real-time recovery of a fast time series (e.g., updated every T seconds) by using sparsely sampled measurements from two sensors whose sampling intervals are much larger than T (e.g., MT and NT, where M and N are integers). Specifically, when the fast signal is an autoregressive process, we propose an online information recovery algorithm that reconstructs the dense underlying temporal dynamics fully, by systematically modulating the sensor speeds MT and NT, and by exploiting a model-based fusion of the sparsely collected data. We provide the collaborative sensing desi

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