The Experts below are selected from a list of 294 Experts worldwide ranked by ideXlab platform
Dmitry S. Shkirmanov - One of the best experts on this subject based on the ideXlab platform.
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Inverse-Square Law violation and reactor antineutrino anomaly
Physics of Particles and Nuclei, 2017Co-Authors: Dmitry V. Naumov, Dmitry S. Shkirmanov, V. A. NaumovAbstract:We discuss a possibility that the so-called reactor antineutrino anomaly can be, at least in part, explained by applying a quantum field-theoretical approach to neutrino oscillations, which in particular predicts a small deviation from the classical Inverse-Square Law at short but macroscopic distances between the neutrino source and detector. An extensive statistical analysis of the reactor data is performed to examine this speculation.
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Extended Grimus-Stockinger theorem and Inverse Square Law violation in quantum field theory
The European Physical Journal C, 2013Co-Authors: Vadim A. Naumov, Dmitry S. ShkirmanovAbstract:We study higher-order corrections to the Grimus-Stockinger theorem dealing with the large-distance asymptotic behavior of the wave-packet modified neutrino propagator within the framework of field-theoretical description of the neutrino oscillation phenomenon. We discuss the possibility that these corrections are responsible for breakdown of the classical Inverse-Square Law (ISL) at the macroscopic distances. In particular the ISL violation can be an explanation of the well-known reactor antineutrino anomaly.
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extended grimus stockinger theorem and Inverse Square Law violation in quantum field theory
European Physical Journal C, 2013Co-Authors: Vadim A. Naumov, Dmitry S. ShkirmanovAbstract:We study corrections to the Grimus–Stockinger theorem dealing with the large-distance asymptotic behavior of the external wave-packet modified neutrino propagator within the framework of a field-theoretical description of the neutrino-oscillation phenomenon. The possibility is discussed that these corrections, responsible for breakdown of the classical Inverse-Square Law (ISL), can lead to measurable effects at small but macroscopic distances accessible in the SBL (anti)neutrino experiments and in particular can provide an explanation of the well-known reactor antineutrino anomaly.
Paul E. Boynton - One of the best experts on this subject based on the ideXlab platform.
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PROGRESS ON A NEW EXPERIMENTAL TEST OF THE GRAVITATIONAL Inverse-Square Law
The Twelfth Marcel Grossmann Meeting, 2012Co-Authors: Ricco M. Bonicalzi, R. D. Newman, Paul E. Boynton, Michael W. Moore, E. C. BergAbstract:Progress is reported from an oscillating torsion-pendulum experiment searching for gravitational Inverse Square Law violation (ISLV) between macroscopic bodies with a separation of order 10 cm. An important design feature is the special mass configurations of both the pendulum and gravitational source. These provide high sensitivity to the horizontal derivative of the Laplacian of the gravitational potential, a unique signature of ISLV, while strongly suppressing couplings through Newtonian gravity that can mimic this signature.
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Tests of the Gravitational Inverse Square Law at Short Ranges
Space Science Reviews, 2009Co-Authors: R. D. Newman, E. C. Berg, Paul E. BoyntonAbstract:A laboratory test and several geophysical tests conducted in the last decades of the 20th century suggested deviations from the Inverse Square distance dependence of Newton’s Law of gravity. While further work has failed to substantiate these results, renewed interest in Inverse Square Law tests of increased sensitivity has been stimulated by a wide range of new theoretical ideas. Of particular interest are tests at submillimeter ranges, which could reveal the existence of compact new dimensions accessible only to gravity. This paper reviews the current status of Inverse Square Law tests, with emphasis on present and proposed experimental techniques.
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Testing the Inverse-Square Law of gravity: a new class of torsion pendulum null experiments
Classical and Quantum Gravity, 1994Co-Authors: Michael W. Moore, A Boudreaux, M Depue, J Guthrie, R Legere, A Yan, Paul E. BoyntonAbstract:We discuss two null experiments designed to test the Inverse-Square Law of gravity in the critical range between and with higher precision than earlier work. To do so, we have devised a torsion pendulum detector whose mass distribution is specifically configured to provide high-sensitivity detection of a uniquely non-Newtonian derivative of the potential (the horizontal derivative of the Laplacian), rather than looking for a small deviation from the expected power-Law dependence on distance of a Newtonian field derivative. This method provides a stronger null test of the gravitational Inverse-Square Law force because it is less sensitive to imperfections in the source mass. We discuss the design of these experiments and estimate their performance relative to currently established experimental limits on Inverse-Square Law violation.
Vadim A. Naumov - One of the best experts on this subject based on the ideXlab platform.
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Extended Grimus-Stockinger theorem and Inverse Square Law violation in quantum field theory
The European Physical Journal C, 2013Co-Authors: Vadim A. Naumov, Dmitry S. ShkirmanovAbstract:We study higher-order corrections to the Grimus-Stockinger theorem dealing with the large-distance asymptotic behavior of the wave-packet modified neutrino propagator within the framework of field-theoretical description of the neutrino oscillation phenomenon. We discuss the possibility that these corrections are responsible for breakdown of the classical Inverse-Square Law (ISL) at the macroscopic distances. In particular the ISL violation can be an explanation of the well-known reactor antineutrino anomaly.
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extended grimus stockinger theorem and Inverse Square Law violation in quantum field theory
European Physical Journal C, 2013Co-Authors: Vadim A. Naumov, Dmitry S. ShkirmanovAbstract:We study corrections to the Grimus–Stockinger theorem dealing with the large-distance asymptotic behavior of the external wave-packet modified neutrino propagator within the framework of a field-theoretical description of the neutrino-oscillation phenomenon. The possibility is discussed that these corrections, responsible for breakdown of the classical Inverse-Square Law (ISL), can lead to measurable effects at small but macroscopic distances accessible in the SBL (anti)neutrino experiments and in particular can provide an explanation of the well-known reactor antineutrino anomaly.
Chenggang Shao - One of the best experts on this subject based on the ideXlab platform.
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Improvement for Testing the Gravitational Inverse-Square Law at the Submillimeter Range.
Physical review letters, 2020Co-Authors: Wenhai Tan, Shanqing Yang, Bifu Zhan, Qinglan Wang, Chenggang Shao, Wen-can Dong, Sheng-guo Guan, Pengshun LuoAbstract:We improve the test of the gravitational Inverse-Square Law at the submillimeter range by suppressing the vibration of the electrostatic shielding membrane to reduce the disturbance coupled from the residual surface potential. The result shows that, at a 95% confidence level, the gravitational Inverse-Square Law holds (|α|≤1) down to a length scale λ=48 μm. This work establishes the strongest bound on the magnitude α of the Yukawa violation in the range of 40-350 μm, and improves the previous bounds by up to a factor of 3 at the length scale λ≈70 μm. Furthermore, the constraints on the power-Law potentials are improved by about a factor of 2 for k=4 and 5.
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New Test of the Gravitational Inverse-Square Law at the Submillimeter Range with Dual Modulation and Compensation.
Physical review letters, 2016Co-Authors: Wenhai Tan, Shanqing Yang, Bifu Zhan, Qinglan Wang, Chenggang Shao, Pengshun Luo, Jun LuoAbstract:By using a torsion pendulum and a rotating eightfold symmetric attractor with dual modulation of both the interested signal and the gravitational calibration signal, a new test of the gravitational Inverse-Square Law at separations down to 295 μm is presented. A dual-compensation design by adding masses on both the pendulum and the attractor was adopted to realize a null experiment. The experimental result shows that, at a 95% confidence level, the gravitational Inverse-Square Law holds (|α|≤1) down to a length scale λ=59 μm. This work establishes the strongest bound on the magnitude α of Yukawa-type deviations from Newtonian gravity in the range of 70-300 μm, and improves the previous bounds by up to a factor of 2 at the length scale λ≈160 μm.
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Search for Lorentz invariance violation by tests of the gravitational Inverse Square Law at short ranges
Chinese Science Bulletin, 2015Co-Authors: Chenggang Shao, Yafen Chen, Yujie TanAbstract:We review the recent development on search for Lorentz invariance violation by tests of the gravitational Inverse Square Law at short ranges. Inverse-Square Law tests usually use planar geometry to search for the non-Newtonian gravity, which are also well suited for exploration of local Lorentz invariance for spacetime-based gravitation. Recent studies of Lorentz invariance violation in pure gravity sector show that the general quadratic curvature coupling will lead to interesting new effects in short range experiments, resulting in the sidereal variations in the non-Newtonian force between two metal plates at short ranges. We show that the Lorentz invariance violation force between two finite flat plates is dominated by the edge effects, which adds an extra suppression factor. Nevertheless, the best current constraints of the Lorentz invariance violating coefficients are determined at a level of 10-8 m2.
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test of the gravitational Inverse Square Law at millimeter ranges
Physical Review Letters, 2012Co-Authors: Shanqing Yang, Bifu Zhan, Qinglan Wang, Chenggang Shao, Wenhai Tan, Jun LuoAbstract:We report a new test of the gravitational Inverse Square Law at millimeter ranges by using a dual-modulation torsion pendulum. An I-shaped symmetric pendulum and I-shaped symmetric attractors were adopted to realize a null experimental design. The non-Newtonian force between two macroscopic tungsten plates is measured at separations ranging down to 0.4 mm, and the validity of the null experimental design was checked by non-null Newtonian gravity measurements. We find no deviations from the Newtonian Inverse Square Law with 95% confidence level, and this work establishes the most stringent constraints on non-Newtonian interaction in the ranges from 0.7 to 5.0 mm, and a factor of 8 improvement is achieved at the length scale of several millimeters.
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Test of the gravitational Inverse Square Law at millimeter ranges.
Physical review letters, 2012Co-Authors: Shanqing Yang, Bifu Zhan, Qinglan Wang, Chenggang Shao, Wenhai Tan, Jun LuoAbstract:We report a new test of the gravitational Inverse Square Law at millimeter ranges by using a dualmodulation torsion pendulum. An I-shaped symmetric pendulum and I-shaped symmetric attractors were adopted to realize a null experimental design. The non-Newtonian force between two macroscopic tungsten plates is measured at separations ranging down to 0.4 mm, and the validity of the null experimental design was checked by non-null Newtonian gravity measurements. We find no deviations from the Newtonian Inverse Square Law with 95% confidence level, and this work establishes the most stringent constraints on non-Newtonian interaction in the ranges from 0.7 to 5.0 mm, and a factor of 8 improvement is achieved at the length scale of several millimeters. General relativity and the standard model, describing the fundamental physical Laws of nature currently, have both passed all experimental tests to date successfully. However, the two theories are essentially incompatible. Physicists have been devoting an intense effort to find a framework that unifies gravity with the rest of physics. Based on ideas from string or M theory, a number of theoretical speculations are proposed and predict that the gravitational interaction could display fundamentally new behavior in a short-range regime [1‐8], i.e., a deviation of the Newtonian 1=r 2 Law in the mm length scale (Ref. [7] provides a comprehensive review). Therefore, any experimental efforts devoted to validating the expectation will help to understand the fundamental nature of gravity. A large amount of experimental results [9‐17] and ongoing searches [18] for a possible violation of the Newtonian 1=r 2 Law over short scales had been performed. The Yukawa-type potential due to new interactions is typically used to modify the gravitational Inverse Square Law: Vðr Þ¼� G m1m2 r ð1 þ �e � r=� Þ; (1)
Jun Luo - One of the best experts on this subject based on the ideXlab platform.
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New Test of the Gravitational Inverse-Square Law at the Submillimeter Range with Dual Modulation and Compensation.
Physical review letters, 2016Co-Authors: Wenhai Tan, Shanqing Yang, Bifu Zhan, Qinglan Wang, Chenggang Shao, Pengshun Luo, Jun LuoAbstract:By using a torsion pendulum and a rotating eightfold symmetric attractor with dual modulation of both the interested signal and the gravitational calibration signal, a new test of the gravitational Inverse-Square Law at separations down to 295 μm is presented. A dual-compensation design by adding masses on both the pendulum and the attractor was adopted to realize a null experiment. The experimental result shows that, at a 95% confidence level, the gravitational Inverse-Square Law holds (|α|≤1) down to a length scale λ=59 μm. This work establishes the strongest bound on the magnitude α of Yukawa-type deviations from Newtonian gravity in the range of 70-300 μm, and improves the previous bounds by up to a factor of 2 at the length scale λ≈160 μm.
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test of the gravitational Inverse Square Law at millimeter ranges
Physical Review Letters, 2012Co-Authors: Shanqing Yang, Bifu Zhan, Qinglan Wang, Chenggang Shao, Wenhai Tan, Jun LuoAbstract:We report a new test of the gravitational Inverse Square Law at millimeter ranges by using a dual-modulation torsion pendulum. An I-shaped symmetric pendulum and I-shaped symmetric attractors were adopted to realize a null experimental design. The non-Newtonian force between two macroscopic tungsten plates is measured at separations ranging down to 0.4 mm, and the validity of the null experimental design was checked by non-null Newtonian gravity measurements. We find no deviations from the Newtonian Inverse Square Law with 95% confidence level, and this work establishes the most stringent constraints on non-Newtonian interaction in the ranges from 0.7 to 5.0 mm, and a factor of 8 improvement is achieved at the length scale of several millimeters.
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Test of the gravitational Inverse Square Law at millimeter ranges.
Physical review letters, 2012Co-Authors: Shanqing Yang, Bifu Zhan, Qinglan Wang, Chenggang Shao, Wenhai Tan, Jun LuoAbstract:We report a new test of the gravitational Inverse Square Law at millimeter ranges by using a dualmodulation torsion pendulum. An I-shaped symmetric pendulum and I-shaped symmetric attractors were adopted to realize a null experimental design. The non-Newtonian force between two macroscopic tungsten plates is measured at separations ranging down to 0.4 mm, and the validity of the null experimental design was checked by non-null Newtonian gravity measurements. We find no deviations from the Newtonian Inverse Square Law with 95% confidence level, and this work establishes the most stringent constraints on non-Newtonian interaction in the ranges from 0.7 to 5.0 mm, and a factor of 8 improvement is achieved at the length scale of several millimeters. General relativity and the standard model, describing the fundamental physical Laws of nature currently, have both passed all experimental tests to date successfully. However, the two theories are essentially incompatible. Physicists have been devoting an intense effort to find a framework that unifies gravity with the rest of physics. Based on ideas from string or M theory, a number of theoretical speculations are proposed and predict that the gravitational interaction could display fundamentally new behavior in a short-range regime [1‐8], i.e., a deviation of the Newtonian 1=r 2 Law in the mm length scale (Ref. [7] provides a comprehensive review). Therefore, any experimental efforts devoted to validating the expectation will help to understand the fundamental nature of gravity. A large amount of experimental results [9‐17] and ongoing searches [18] for a possible violation of the Newtonian 1=r 2 Law over short scales had been performed. The Yukawa-type potential due to new interactions is typically used to modify the gravitational Inverse Square Law: Vðr Þ¼� G m1m2 r ð1 þ �e � r=� Þ; (1)
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Null test of Newtonian Inverse-Square Law at submillimeter range with a dual-modulation torsion pendulum.
Physical review letters, 2007Co-Authors: Sheng-guo Guan, Chenggang Shao, Jun Luo, Lin-xia LiuAbstract:A null experimental test of the Newtonian Inverse-Square Law at submillimeter range using a torsion pendulum was presented. Under the dual modulations of both the expected signal and the gravitational torque for calibration, our data concluded with 95% confidence that no new forces were observed and any gravitational-strength Yukawa forces ($|\ensuremath{\alpha}|\ensuremath{\ge}1$) must have a length scale $\ensuremath{\lambda}l66\text{ }\text{ }\ensuremath{\mu}\mathrm{m}$, agreeing well with the latest result of the E\"ot-wash group. Our result sets a unification energy scale of ${M}^{*}\ensuremath{\ge}2.8\text{ }\text{ }\mathrm{TeV}/{c}^{2}$ for the two compactified extra space dimensions with the same size ${R}^{*}l47\text{ }\text{ }\ensuremath{\mu}\mathrm{m}$.
