Academic literature on the topic 'Leggett-Garg Inequalities'

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Journal articles on the topic "Leggett-Garg Inequalities"

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Emary, Clive, Neill Lambert, and Franco Nori. "Leggett–Garg inequalities." Reports on Progress in Physics 77, no. 1 (December 23, 2013): 016001. http://dx.doi.org/10.1088/0034-4885/77/1/016001.

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Kumari, Swati, and A. K. Pan. "Inequivalent Leggett-Garg inequalities." EPL (Europhysics Letters) 118, no. 5 (June 1, 2017): 50002. http://dx.doi.org/10.1209/0295-5075/118/50002.

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Allen, John-Mark A., Owen J. E. Maroney, and Stefano Gogioso. "A Stronger Theorem Against Macro-realism." Quantum 1 (July 14, 2017): 13. http://dx.doi.org/10.22331/q-2017-07-14-13.

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Macro-realism is the position that certain macroscopic observables must always possess definite values: e.g. the table is in some definite position, even if we do not know what that is precisely. The traditional understanding is that by assuming macro-realism one can derive the Leggett-Garg inequalities, which constrain the possible statistics from certain experiments. Since quantum experiments can violate the Leggett-Garg inequalities, this is taken to rule out the possibility of macro-realism in a quantum universe. However, recent analyses have exposed loopholes in the Leggett-Garg argument, which allow many types of macro-realism to be compatible with quantum theory and hence violation of the Leggett-Garg inequalities. This paper takes a different approach to ruling out macro-realism and the result is a no-go theorem for macro-realism in quantum theory that is stronger than the Leggett-Garg argument. This approach uses the framework of ontological models: an elegant way to reason about foundational issues in quantum theory which has successfully produced many other recent results, such as the PBR theorem.
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Hess, Karl, Hans De Raedt, and Kristel Michielsen. "From Boole to Leggett-Garg: Epistemology of Bell-Type Inequalities." Advances in Mathematical Physics 2016 (2016): 1–7. http://dx.doi.org/10.1155/2016/4623040.

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In 1862, George Boole derived an inequality for variables that represents a demarcation line between possible and impossible experience. This inequality forms an important milestone in the epistemology of probability theory and probability measures. In 1985 Leggett and Garg derived a physics related inequality, mathematically identical to Boole’s, that according to them represents a demarcation between macroscopic realism and quantum mechanics. We show that a wide gulf separates the “sense impressions” and corresponding data, as well as the postulates of macroscopic realism, from the mathematical abstractions that are used to derive the inequality of Leggett and Garg. If the gulf can be bridged, one may indeed derive the said inequality, which is then clearly a demarcation between possible and impossible experience: it cannot be violated and is not violated by quantum theory. This implies that the Leggett-Garg inequality does not mean that the SQUID flux is not there when nobody looks, as Leggett and Garg suggest, but instead that the probability measures may not be what Leggett and Garg have assumed them to be, when no data can be secured that directly relate to them. We show that similar considerations apply to other quantum interpretation-puzzles such as two-slit experiments.
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Kumari, Swati, and A. K. Pan. "Various formulations of inequivalent Leggett–Garg inequalities." Journal of Physics A: Mathematical and Theoretical 54, no. 3 (December 31, 2020): 035301. http://dx.doi.org/10.1088/1751-8121/abd077.

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Łobejko, Marcin, and Jerzy Dajka. "Violation of Leggett—Garg inequalities for quantum-classical hybrids." Journal of Physics: Conference Series 626 (July 3, 2015): 012038. http://dx.doi.org/10.1088/1742-6596/626/1/012038.

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Sun, Yong-Nan, Yang Zou, Rong-Chun Ge, Jian-Shun Tang, and Chuan-Feng Li. "Violation of Leggett—Garg Inequalities in Single Quantum Dots." Chinese Physics Letters 29, no. 12 (December 2012): 120302. http://dx.doi.org/10.1088/0256-307x/29/12/120302.

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Naikoo, Javid, Swati Kumari, Subhashish Banerjee, and A. K. Pan. "PT symmetric evolution, coherence and violation of Leggett–Garg inequalities." Journal of Physics A: Mathematical and Theoretical 54, no. 27 (June 11, 2021): 275303. http://dx.doi.org/10.1088/1751-8121/ac0546.

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Rastegin, Alexey E. "Formulation of Leggett—Garg Inequalities in Terms of q -Entropies." Communications in Theoretical Physics 62, no. 3 (September 2014): 320–26. http://dx.doi.org/10.1088/0253-6102/62/3/05.

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Emary, Clive, Neill Lambert, and Franco Nori. "Corrigendum: Leggett–Garg inequalities (2014 Rep. Prog. Phys. 77 016001)." Reports on Progress in Physics 77, no. 3 (February 19, 2014): 039501. http://dx.doi.org/10.1088/0034-4885/77/3/039501.

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Conference papers on the topic "Leggett-Garg Inequalities"

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Suzuki, Yutaro, Masataka Iinuma, Tomonori Okazaki, Gen Taguchi, Yutaka Kadoya, and Holger F. Hofmann. "Experimental investigation of the role of measurement uncertainties in the violation of Leggett-Garg inequalities." In International Quantum Electronics Conference. Washington, D.C.: OSA, 2011. http://dx.doi.org/10.1364/iqec.2011.i394.

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Suzuki, Yutaro, Masataka Iinuma, Tomonori Okazaki, Gen Taguchi, Yutaka Kadoya, and Holger F. Hofmann. "Experimental investigation of the role of measurement uncertainties in the violation of Leggett-Garg inequalities." In 2011 International Quantum Electronics Conference (IQEC) and Conference on Lasers and Electro-Optics (CLEO) Pacific Rim. IEEE, 2011. http://dx.doi.org/10.1109/iqec-cleo.2011.6193785.

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