Academic literature on the topic 'Yukawa force'

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Journal articles on the topic "Yukawa force"

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BARUAH, SWATI, and NILAKSHI DAS. "A comparative study between effects of shadowing potential and ODS on Coulomb crystal formation." Journal of Plasma Physics 77, no. 4 (2010): 547–57. http://dx.doi.org/10.1017/s0022377810000723.

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AbstractIn dusty plasma, the overlapping Debye spheres around dust grains produce an attractive force. Shadowing force is exerted between neighboring particles because of mutual distortion of ion or neutral flux to the particles. A comparative study has been made on the role of these two forces on 2D structure of dusty system. Radial distribution function for the particles is a comparative study between the effect of the coupled Yukawa-shadowing potential and the coupled Yukawa-Overlapping Debye Sphere (ODS) potential on 2D dust crystal formation, which has been performed by using molecular dynamics simulation. The structure of the system is investigated by calculating the radial distribution function (g(r)) for different values of Γ, κ and dust number densities nd. It is seen from our study that the Coulomb coupling parameter does not have significant effect on both ODS and shadowing forces. The attractive shadowing force is more dominant for grains with large screening parameter. However, the ODS force becomes dominant with the increasing value of the dust number density. The results for the Yukawa-Shadowing and the ODS potential are also compared with experimental results and a close agreement is obtained for attractive shadowing force.
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BORDAG, M., V. M. MOSTEPANENKO, and I. YU. SOKOLOV. "RESTRICTIONS ON THE HYPOTHETICAL LONG RANGE INTERACTIONS FROM THE CASIMIR-TYPE NULL EXPERIMENT WITH THREE TEST BODIES." Modern Physics Letters A 09, no. 29 (1994): 2671–80. http://dx.doi.org/10.1142/s0217732394002513.

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A realistic null experiment is suggested in which the Casimir force between a plane plate and a spherical lens is compensated by the force of gravitational attraction. This configuration is shown to be very sensitive to the existence of additional hypothetical forces of Yukawa-type or power laws. From the suggested null experiment the restrictions on the Yukawa constant α can be strengthened by a factor up to 1000 in a wide range 10−8 m < λ < 10−4 m and by a factor of 10 for λ from several centimeters to several meters. For power law interactions the strengthening of restrictions by a factor of 20 is possible for the force decreasing as r−5.
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Eingorn, Maxim, Ezgi Canay, Jacob M. Metcalf, Maksym Brilenkov, and Alexander Zhuk. "Effect of the Cubic Torus Topology on Cosmological Perturbations." Universe 7, no. 12 (2021): 469. http://dx.doi.org/10.3390/universe7120469.

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We study the effect of the cubic torus topology of the Universe on scalar cosmological perturbations which define the gravitational potential. We obtain three alternative forms of the solution for both the gravitational potential produced by point-like masses, and the corresponding force. The first solution includes the expansion of delta-functions into Fourier series, exploiting periodic boundary conditions. The second one is composed of summed solutions of the Helmholtz equation for the original mass and its images. Each of these summed solutions is the Yukawa potential. In the third formula, we express the Yukawa potentials via Ewald sums. We show that for the present Universe, both the bare summation of Yukawa potentials and the Yukawa-Ewald sums require smaller numbers of terms to yield the numerical values of the potential and the force up to desired accuracy. Nevertheless, the Yukawa formula is yet preferable owing to its much simpler structure.
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MOSTEPANENKO, V. M. "CONSTRAINTS ON FORCES INSPRIRED BY EXTRA DIMENSIONAL PHYSICS FOLLOWING FROM THE CASIMIR EFFECT." International Journal of Modern Physics A 17, no. 06n07 (2002): 722–31. http://dx.doi.org/10.1142/s0217751x02010054.

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We consider Yukawa-type forces inspired by extra dimensional physics and by exchange of light elementary particles. Constraints on these forces following from the recent measurements of the Casimir force are analysed. We show that the experiments with the Casimir force gave the possibility to strengthen the previously known constraints up to several thousand times in a wide interaction range. Further strengthening is expected in near future.
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Bergé, Joel, Martin Pernot-Borràs, Jean-Philippe Uzan, et al. "MICROSCOPE’s constraint on a short-range fifth force." Classical and Quantum Gravity 39, no. 20 (2022): 204010. http://dx.doi.org/10.1088/1361-6382/abe142.

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Abstract The MICROSCOPE experiment was designed to test the weak equivalence principle in space, by comparing the low-frequency dynamics of cylindrical ‘free-falling’ test masses controlled by electrostatic forces. We use data taken during technical sessions aimed at estimating the electrostatic stiffness of MICROSCOPE’s sensors to constrain a short-range Yukawa deviation from Newtonian gravity. We take advantage of the fact that in the limit of small displacements, the gravitational interaction (both Newtonian and Yukawa-like) between nested cylinders is linear, and thus simply characterised by a stiffness. By measuring the total stiffness of the forces acting on a test mass as it moves, and comparing it with the theoretical electrostatic stiffness (expected to dominate), it is a priori possible to infer constraints on the Yukawa potential parameters. However, we find that measurement uncertainties are dominated by the gold wires used to control the electric charge of the test masses, though their related stiffness is indeed smaller than the expected electrostatic stiffness. Moreover, we find a non-zero unaccounted for stiffness that depends on the instrument’s electric configuration, hinting at the presence of patch-field effects. Added to significant uncertainties on the electrostatic model, they only allow for poor constraints on the Yukawa potential. This is not surprising, as MICROSCOPE was not designed for this measurement, but this analysis is the first step to new experimental searches for non-Newtonian gravity in space.
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MOSTEPANENKO, V. M., V. B. BEZERRA, G. L. KLIMCHITSKAYA, and C. ROMERO. "NEW CONSTRAINTS ON YUKAWA-TYPE INTERACTIONS FROM THE CASIMIR EFFECT." International Journal of Modern Physics: Conference Series 14 (January 2012): 200–214. http://dx.doi.org/10.1142/s2010194512007337.

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Measurements of the Casimir force are used to obtain stronger constraints on the parameters of hypothetical interactions predicted in different unification schemes beyond the Standard Model. We review new strong constraints on the Yukawa-type interactions derived during the last two years from recent experiments on measuring the lateral Casimir force, Casimir force in configurations with corrugated boundaries and the Casimir-Polder force. Specifically, from measurements of the lateral Casimir force compared with the exact theory the strengthening of constraints up to a factor of 24 millions was achieved. We also discuss further possibilities to strengthen constraints on the Yukawa interactions from the Casimir effect.
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MOSTEPANENKO, V. M., V. B. BEZERRA, G. L. KLIMCHITSKAYA, and C. ROMERO. "NEW CONSTRAINTS ON YUKAWA-TYPE INTERACTIONS FROM THE CASIMIR EFFECT." International Journal of Modern Physics A 27, no. 15 (2012): 1260015. http://dx.doi.org/10.1142/s0217751x12600159.

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Measurements of the Casimir force are used to obtain stronger constraints on the parameters of hypothetical interactions predicted in different unification schemes beyond the Standard Model. We review new strong constraints on the Yukawa-type interactions derived during the last two years from recent experiments on measuring the lateral Casimir force, Casimir force in configurations with corrugated boundaries and the Casimir–Polder force. Specifically, from measurements of the lateral Casimir force compared with the exact theory the strengthening of constraints up to a factor of 24 millions was achieved. We also discuss further possibilities to strengthen constraints on the Yukawa interactions from the Casimir effect.
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Banerjee, Avik, and Gautam Bhattacharyya. "Probing the Higgs boson through Yukawa force." Nuclear Physics B 961 (December 2020): 115261. http://dx.doi.org/10.1016/j.nuclphysb.2020.115261.

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Klimchitskaya, Galina L., and Vladimir M. Mostepanenko. "How to Strengthen Constraints on Non-Newtonian Gravity from Measuring the Lateral Casimir Force." Universe 9, no. 1 (2023): 34. http://dx.doi.org/10.3390/universe9010034.

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It has been known that in the nanometer interaction range the available experimental data do not exclude the Yukawa-type corrections to Newton’s gravitational law, which exceed the Newtonian gravitational force by many orders of magnitude. The strongest constraints on the parameters of Yukawa-type interaction in this interaction range follow from the experiments on neutron scattering and from measurements of the lateral and normal Casimir forces between corrugated surfaces. In this work, we demonstrate that by optimizing the experimental configuration at the expense of the higher corrugation amplitudes and smaller periods of corrugations it is possible to considerably strengthen the currently available constraints within the wide interaction range from 4.5 to 37 nm. We show that the maximum strengthening by more than a factor of 40 is reachable for the interaction range of 19 nm.
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Klimchitskaya, Galina L., and Vladimir M. Mostepanenko. "Dark Matter Axions, Non-Newtonian Gravity and Constraints on Them from Recent Measurements of the Casimir Force in the Micrometer Separation Range." Universe 7, no. 9 (2021): 343. http://dx.doi.org/10.3390/universe7090343.

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We consider axionlike particles as the most probable constituents of dark matter, the Yukawa-type corrections to Newton’s gravitational law and constraints on their parameters following from astrophysics and different laboratory experiments. After a brief discussion of the results by Prof. Yu. N. Gnedin in this field, we turn our attention to the recent experiment on measuring the differential Casimir force between Au-coated surfaces of a sphere and the top and bottom of rectangular trenches. In this experiment, the Casimir force was measured over an unusually wide separation region from 0.2 to 8μm and compared with the exact theory based on first principles of quantum electrodynamics at nonzero temperature. We use the measure of agreement between experiment and theory to obtain the constraints on the coupling constant of axionlike particles to nucleons and on the interaction strength of a Yukawa-type interaction. The constraints obtained on the axion-to-nucleon coupling constant and on the strength of a Yukawa interaction are stronger by factors of 4 and 24, respectively, than those found previously from gravitational experiments and measurements of the Casimir force but weaker than the constraints following from a differential measurement where the Casimir force was nullified. Some other already performed and planned experiments aimed at searching for axions and non-Newtonian gravity are discussed, and their prospects are evaluated.
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Dissertations / Theses on the topic "Yukawa force"

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Schmidt, Helena [Verfasser]. "Yukawa force spectroscopy to search for violations of Newton’s law of gravity below 1 μm distances / Helena Schmidt". Hannover : Gottfried Wilhelm Leibniz Universität Hannover, 2020. http://d-nb.info/121624099X/34.

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González, Luis J. "An exploratory study of forced displacement and some cultural consequences among the Yukpa of Maracaibo, Venezuela." Diss., 2015. http://hdl.handle.net/10500/19628.

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The original Yukpa are an indigenous community who have inhabited the lands of the Sierra de Perij a (mountain range of Perij a) in Venezuela since prehistoric times. The sovereignty of the Yukpa on their ancestral territories was protected from non-indigenous people until the arrival of Spanish Capuchin missionaries during the seventeenth century. The presence of the Capuchin missionaries furthered the entrance of non-indigenous people, who explored the area and discovered the fertility of the soil and a rich variety of natural resources. In the 1930s, ranch owners started the progressive occupation of Yukpas' ancestral lands, taking advantage of the Venezuelan government's indi erence to indigenous communities. The Yukpa started to resist the ranch owners. In retaliation, ranch owners responded with violence to intimidate and expel the Yukpa from what they claimed to be their property. The Yukpa have also been harassed by insurgent Colombian groups and drug dealers, who nd the Sierra de Perij a an ideal place to cultivate marijuana and opium poppy owers. To avoid the violence in the Sierra de Perij a, a signi cant number of Yukpa moved during the eighties to the city of Maracaibo in northwestern Venezuela. These displaced Yukpa have settled in lots located in the vicinities of the Hospital General del Sur, in Maracaibo, where they continue to live. For many indigenous communities, land and culture are interdependent. Land represents for many indigenous people their origin and continuity. Some authors claim that the forced displacement to areas distinct from their place of origin may disrupt the continuity of traditions which are the essence of their culture (Maybury-Lewis 2001:31; UNESCO 2009:207). This study examines ethnographically the Yukpa settled in Maracaibo in order to identify the extent to which the involuntary displacement from their ancestral territories has a ected their autochthonous land-based culture. Furthermore, this study provides a biographic pro le of the Yukpa settled in Maracaibo along with a discussion of their current needs, and some recommendations for further studies<br>Anthropology and Archaeology<br>M.A. (Anthropology)
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Book chapters on the topic "Yukawa force"

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Manton, Nicholas, and Nicholas Mee. "Nuclear Physics." In The Physical World. Oxford University Press, 2017. http://dx.doi.org/10.1093/oso/9780198795933.003.0012.

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The chapter gives an overview of nuclear physics from the discovery of the neutron to ongoing research topics. General properties of atomic nuclei are considered: the valley of stability, the nuclear potential, the pairing of nucleons and the strong force. The semi-empirical liquid drop model is presented as a description of relatively large atomic nuclei. The nuclear shell model is described, along with its relationship to magic numbers and beta decay, and is then refined to produce the Nilsson model. Gamow tunnelling is used to explain alpha decay and the Geiger–Nuttall law. It is then applied to nuclear fission and used to calculate rates for thermonuclear fusion in stars. ITER and controlled nuclear fusion are also discussed. Production of superheavy nuclei is detailed and the existence of exotic nuclei, such as halo nuclei, is considered. The Yukawa theory of the strong force is discussed, including its relationship to QCD.
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Shakoori, Muhammad Asif, Misbah Khan, Haipeng Li, Maogang He, Aamir Shahzad, and Syed Ali Raza. "Numerical Approach to Thermal Conductivity of Electrorheological Complex (Dusty) Plasmas." In Emerging Applications of Plasma Science in Allied Technologies. IGI Global, 2024. http://dx.doi.org/10.4018/979-8-3693-0904-9.ch009.

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Electrorheological complex (dusty) plasmas (ER-CDPs) are type of plasmas with rheological behavior under external electric field (EEF). In this chapter, the nonequilibrium molecular dynamics simulations method is used to tune thermal conductivity for two-dimensional (2D) complex plasma liquids using EEF in different directions. Anisotropic thermal conductivity is investigated in three different cases, (i) Ex(x-axis), (ii) Ey(y-axis), and (iii) Exy(xy-axis) and with constant external perturbation force (Px = 0.02). The thermal conductivity under the influence of EEF is different in different directions. Obtained results are compared and discussed with previous known theoretical, simulation, and experimental data for 2D systems in constant EEF. The appropriate normalized thermal conductivity with Einstein frequency at constant EEF follows universal temperature scaling law. These comparisons and discussions show that algorithms of EEF of different cases with Yukawa potential have accuracy and consistency. These comparisons validated a new numerical model that can be used for variations of EEF along with different system sizes and plasma parameters.
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Brandt, Siegmund. "Quantum Chromodynamics (QCD) – The New Theory of Strong Interaction (1973)." In The Harvest of a Century. Oxford University PressOxford, 1992. http://dx.doi.org/10.1093/oso/9780199544691.003.0093.

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Abstract The riddle of the strong interaction, i.e., of the force that keeps the nucleus together, was finally solved in the early 1970s in a rather unexpected way. In previous episodes we told of various attempts to describe nuclear forces, in particular, Heisenberg’s introduction of isospin (Episode 51) and Yukawa’s postulate of the meson as carrier of the strong force (Episode 57). While these theories led to important developments, they failed to reach their original goal. The present theory was arrived at in three steps. First, quarks were postulated to have an additional property which was to come in three different forms, soon called colours . Second, a Yang–Mills theory, similar to the one successfully constructed for the electroweak interaction (Episode 90), was formulated using as gauge symmetry an SU (3) group providing transformations between the three colours. Finally, this type of theory was found to have an astonishing property called asymptotic freedom : The nearer two quarks come to each other, the smaller is the force between them. Small distances are reached only for very high momentum transfer between the two quarks; in such situations quarks approach the behaviour of free particles. On the other hand, the force increases with rising distance or falling momentum transfer. Let us now look at the developments in a little more detail.
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Catto, Isabelle, Claude Le Bris, and Pierre-Louis Lions. "Convergence of the Energy Via the Convergence of the Density." In The Mathematical Theory of Thermodynamic Limits: Thomas-Fermi type models. Oxford University PressOxford, 1998. http://dx.doi.org/10.1093/oso/9780198501619.003.0006.

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Abstract In Chapters 2-5, we have shown that, both for Yukawa interaction and Coulomb interaction, there exists a thermodynamic limit for the energy per unit volume and for the electronic density, when the nuclei are located on a periodic cubic lattice. In addition, the density obtained in this limit is periodic, of the same period as the lattice. However, in the case of Coulomb forces, we have used some additional assumptions on the shape of the cell and of the nuclei, and also on the behaviour of the Van Hove sequence (see the statement of Theorem 3.1). The first goal of this chapter is to show that using a different strategy of proof allows us to get rid of these assumptions (see Section 6.2).
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"Universal Nuclear Forces and Yukawa's New Intermediate Mass Particle (1933–1937)." In The Golden Age of Theoretical Physics. WORLD SCIENTIFIC, 2001. http://dx.doi.org/10.1142/9789812810588_0032.

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Conference papers on the topic "Yukawa force"

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Hatsuda, Tetsuo, Atsushi Hosaka, Kanchan Khemchandani, Hideko Nagahiro, and Kanabu Nawa. "From Yukawa and Nambu to Lattice Nuclear Force." In INTERNATIONAL CONFERENCE ON THE STRUCTURE OF BARYONS (BARYONS' 10). AIP, 2011. http://dx.doi.org/10.1063/1.3647356.

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Beckwith, Andrew W. "Fifth-force potentials, compared to Yukawa modification of gravity for massive gravitons, to link gravitation, and NLED modified GR." In Proceedings of the MG14 Meeting on General Relativity. WORLD SCIENTIFIC, 2017. http://dx.doi.org/10.1142/9789813226609_0318.

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KUKULIN, VLADIMIR I. "ARGUMENTS AGAINST THE YUKAWA CONCEPT OF NUCLEAR FORCE AT INTERMEDIATE- AND SHORT-RANGES AND THE NEW MECHANISM FOR NN INTERACTION." In Proceedings of the Conference “Bologna 2000: Structure of the Nucleus at the Dawn of the Century”. WORLD SCIENTIFIC, 2001. http://dx.doi.org/10.1142/9789812810922_0031.

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