Foundations of Physics
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Không gian de Sitter không có dao động lượng tử động Dịch bởi AI
Foundations of Physics - Tập 46 - Trang 702-735 - 2016
Chúng tôi cho rằng, dưới một số giả thiết hợp lý, không gian de Sitter tiến đến trạng thái chân không yên tĩnh trong đó không tồn tại các dao động lượng tử động. Những dao động này đòi hỏi hoặc một vi trạng thái đang tiến hóa, hoặc các lịch sử phụ thuộc thời gian của các thiết bị ghi nhận ở trạng thái ngoài cân bằng, mà chúng tôi cho rằng không có trong các trạng thái tĩnh. Đối với trường vô hướng...... hiện toàn bộ
Double-slit Interference and Temporal Topos
Foundations of Physics - Tập 36 - Trang 1681-1700 - 2006
The electron double-slit interference is re-examined from the point of view of temporal topos. Temporal topos (or t-topos) is an abstract algebraic (categorical) method using the theory of sheaves. A brief introduction to t-topos is given. When the structural foundation for describing particles is based on t-topos, the particle-wave duality of electron is a natural consequence. A presheaf associat...... hiện toàn bộ
How the Weak Variance of Momentum Can Turn Out to be Negative
Foundations of Physics - Tập 45 - Trang 535-556 - 2015
Weak values are average quantities, therefore investigating their associated variance is crucial in understanding their place in quantum mechanics. We develop the concept of a position-postselected weak variance of momentum as cohesively as possible, building primarily on material from Moyal (Mathematical Proceedings of the Cambridge Philosophical Society, Cambridge University Press, Cambridge, 19...... hiện toàn bộ
Quantum Properties of a Single Beam Splitter
Foundations of Physics - Tập 42 - Trang 53-67 - 2011
When a single beam-splitter receives two beams of bosons described by Fock states (Bose-Einstein condensates at very low temperatures), interesting generalizations of the two-photon Hong-Ou-Mandel effect take place for larger number of particles. The distributions of particles at two detectors behind the beam splitter can be understood as resulting from the combination of two effects, the spontane...... hiện toàn bộ
Beyond Quantum Mechanics: Insights from the Work of Martin Gutzwiller
Foundations of Physics - Tập 31 - Trang 593-612 - 2001
A complete quantum solution provides all possible knowledge of a system, whereas semiclassical theory provides at best approximate solutions in a limited region. Nevertheless, semiclassical methods based on the work of Martin Gutzwiller can provide stunning physical insights in regimes where quantum solutions are opaque. Furthermore, they can provide a unique bridge between the quantum and classic...... hiện toàn bộ
Quantum Measures on Finite Effect Algebras with the Riesz Decomposition Properties
Foundations of Physics - Tập 44 - Trang 1009-1037 - 2014
One kind of generalized measures called quantum measures on finite effect algebras, which fulfil the grade-2 additive sum rule, is considered. One basis of vector space of quantum measures on a finite effect algebra with the Riesz decomposition property (RDP for short) is given. It is proved that any diagonally positive symmetric signed measure
$$\lambda $$
...... hiện toàn bộ
From the Group SL(2, C) to Gyrogroups and Gyrovector Spaces and Hyperbolic Geometry
Foundations of Physics - Tập 31 - Trang 1611-1639 - 2001
We show that the algebra of the group SL(2, C) naturally leads to the notion of gyrogroups and gyrovector spaces for dealing with the Lorentz group and its underlying hyperbolic geometry. The superiority of the use of the gyrogroup formalism over the use of the SL(2, C) formalism for dealing with the Lorentz group in some cases is indicated by (i) the validity of gyrogroups and gyrovector spaces i...... hiện toàn bộ
Problems of synchronization in special relativity: A reply to G. Cavalleri and G. Spinelli
Foundations of Physics - - 1983
I defend the opinion that Cavalleri and Spinelli, who in the last years abandoned many of the relativity dogmas and embraced many of the absolute conceptions, are still very far from an adequte understanding and interpretation of physical reality.
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