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The area law-like scaling of local quantum entropies is the central characteristic of the entanglement inherent in quantum fields, many-body systems, and spacetime. Whilst the area law is primarily associated with the entanglement structure…

量子物理 · 物理学 2024-04-19 Tobias Haas

A unified formalism was developed in [S. Adhikary et. al., arXiv:1710.04371 [quant-ph]], for describing non-classicality of states by introducing pseudo projection operators in which both quantum logic and quantum probability are naturally…

量子物理 · 物理学 2019-07-03 Soumik Adhikary , Sooryansh Asthana , V. Ravishankar

We analyse the singular behaviour of one-loop integrals and scattering amplitudes in the framework of the loop--tree duality approach. We show that there is a partial cancellation of singularities at the loop integrand level among the…

高能物理 - 唯象学 · 物理学 2015-06-19 Sebastian Buchta , Grigorios Chachamis , Petros Draggiotis , Ioannis Malamos , German Rodrigo

Integrating out virtual quantum fluctuations in an originally local quantum field theory results in an effective theory which is non-local. In this Letter we argue that tunneling of the 3rd kind - where particles traverse a barrier by…

量子物理 · 物理学 2013-04-10 Simon A. Gardiner , Holger Gies , Joerg Jaeckel , Chris J. Wallace

We experimentally show that nonlocality can be produced from single-particle contextuality by using two-particle correlations which do not violate any Bell inequality by themselves. This demonstrates that nonlocality can come from an {\em a…

The conceptual basis for the nonlocality of accelerated systems is presented. The nonlocal theory of accelerated observers and its consequences are briefly described. Nonlocal field equations are developed for the case of the…

广义相对论与量子宇宙学 · 物理学 2009-11-10 Bahram Mashhoon

Some typical quantization ambiguities of quantum geometry are studied within isotropic models. Since this allows explicit computations of operators and their spectra, one can investigate the effects of ambiguities in a quantitative manner.…

广义相对论与量子宇宙学 · 物理学 2011-09-30 Martin Bojowald

We show that the presented real-number quantum theories, compatible with the independent source assumption, require the inclusion of a nonlocal map. This means that if the independent source assumption holds, in these models, complex-number…

量子物理 · 物理学 2026-04-14 Tianfeng Feng , Changliang Ren , Vlatko Vedral

One of the fundamental questions in physics concerns the relation between spacetime and quantum entanglement. The spacetime is usually considered as a fixed background physical space, and the quantum entanglement is usually manifested as a…

量子物理 · 物理学 2026-03-10 Akbar Fahmi

Nonlocality is a key feature discriminating quantum and classical physics. Quantum-interference phenomena, such as Young's double slit experiment, are one of the clearest manifestations of nonlocality, recently addressed as $dynamical$ to…

介观与纳米尺度物理 · 物理学 2016-11-16 E. Strambini , K. S. Makarenko , G. Abulizi , M. P. de Jong , W. G. van der Wiel

We study the quantum tunnelling of a very complex object of which only part is coupled to an external potential ( the potential barrier ). We treat this problem as the tunnelling of a particle (part of the system affected by the potential)…

凝聚态物理 · 物理学 2008-02-03 A. H. Castro Neto , A. O. Caldeira

By adding generalizations involving translations, the machinery of the quantum theory of free fields leads to the semiclassical equations of motion for a charged massive particle in electromagnetic and gravitational fields. With the…

综合物理 · 物理学 2015-07-07 Richard Shurtleff

Preliminary research in the area of biophysics appears to indicate the existence of quantum entanglement and nonlocality at the biological level, both for human subjects and for neurons derived from human neural stem cells. The lack of…

神经元与认知 · 定量生物学 2009-09-29 Fred H. Thaheld

Entanglement of quasiclassical (coherent) states of two harmonic oscillators leads to striking quantum effects and is useful for quantum technologies. These effects and applications are closely related to nonlocal correlations inherent in…

量子物理 · 物理学 2019-05-14 Zhi-Rong Zhong , Jian-Qi Sheng , Li-Hua Lin , Shi-Biao Zheng

A model of quantum field theory in which the field operators form a nonassociative algebra is proposed. In such a case, the n-point Green's functions become functionally independent of each other. It is shown that particle interaction in…

高能物理 - 理论 · 物理学 2007-05-23 Vladimir Dzhunushaliev

Quantum Mechanics lacks an intuitive interpretation, which is the cause of a generally formalistic approach to its use. This in turn has led to a certain insensitivity to the actual meaning of many words used in its description and…

量子物理 · 物理学 2009-11-13 A. F. Kracklauer

The Special Theory of Relativity and Quantum Mechanics merge in the key principle of Quantum Field Theory, the Principle of Locality. We review some examples of its ``unreasonable effectiveness'' (which shows up best in the formulation of…

数学物理 · 物理学 2014-11-20 Sergio Doplicher

We investigate the dynamics of a particle in a confined periodic system---a time-dependent oscillator confined by infinitely high and moving walls---and focus on the evolution of the phase of the wavefunction. It is shown that, for some…

量子物理 · 物理学 2020-11-03 Mordecai Waegell , Alex Matzkin

In this paper, we investigate the consequences of maximal length as well as minimal momentum scales on nonlocal correlations shared by two parties of a bipartite quantum system. To this aim, we rely on a general phenomenological scheme…

量子物理 · 物理学 2023-08-21 Pasquale Bosso , Fabrizio Illuminati , Luciano Petruzziello , Fabian Wagner

The functional integration method is used for studying the scattering of a scalar pion on nucleon with the anomalous magnetic moment in the framework of nonrenomalizable quantum field theory. In the asymptotic region s {\to} {\infty}, |t|…

高能物理 - 理论 · 物理学 2011-12-21 Nguyen Suan Han , Nguyen Nhu Xuan , Le Thi Hai Yen