Journal•ISSN: 0894-9875
Foundations of Physics Letters
Springer Science+Business Media
About: Foundations of Physics Letters is an academic journal. The journal publishes majorly in the area(s): Quantum process & Theory of relativity. It has an ISSN identifier of 0894-9875. Over the lifetime, 891 publications have been published receiving 8774 citations.
Topics: Quantum process, Theory of relativity, General relativity, Interpretations of quantum mechanics, Open quantum system
Papers published on a yearly basis
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TL;DR: A three-stage quantum cryptographic protocol based on public key cryptography in which each party uses its own secret key, where the communication in the proposed protocol remains quantum in each stage.
Abstract: We present a three-stage quantum cryptographic protocol based on public key cryptography in which each party uses its own secret key. Unlike the BB84 protocol, where the qubits are transmitted in only one direction and classical information exchanged thereafter, the communication in the proposed protocol remains quantum in each stage. A related system of key distribution is also described.
146 citations
TL;DR: In this paper, a 3×3 parametric, unimodular, orthogonal matrix that represents the Thomas rotation is presented and studied, which enables the Lorentz transformation group to be parametrized by two physical observables: the (3-dimensional) relative velocity and orientation between inertial frames.
Abstract: Two successive pure Lorentz transformations are equivalent to a pure Lorentz transformation preceded by a 3×3 space rotation, called a Thomas rotation. When applied to the gyration of the rotation axis of a spinning mass, Thomas rotation gives rise to the well-knownThomas precession. A 3×3 parametric, unimodular, orthogonal matrix that represents the Thomas rotation is presented and studied. This matrix representation enables the Lorentz transformation group to be parametrized by two physical observables: the (3-dimensional) relative velocity and orientation between inertial frames. The resulting parametrization of the Lorentz group, in turn, enables the composition of successive Lorentz transformations to be given by parameter composition. This composition is continuously deformed into a corresponding, well-known Galilean transformation composition by letting the speed of light approach infinity. Finally, as an application the Lorentz transformation with given orientation parameter is uniquely expressed in terms of an initial and a final time-like 4-vector.
144 citations
TL;DR: In this paper, the authors investigate whether there are general relativistic spacetimes that allow an observer to collect in finite time all the data from the worldline of another observer, where the proper length of the observer's worldline is infinite.
Abstract: I investigate whether there are general relativistic spacetimes that allow an observerµ to collect in a finite time all the data from the worldline of another observerλ, where the proper length ofλ's worldline is infinite. The existence of these spacetimes has a bearing on certain problems in computation theory. A theorem shows that most standard spacetimes cannot accommodate this scenario. There are however spacetimes which can: anti-de Sitter spacetime is one example.
120 citations
TL;DR: The Lane-Emden equation describing temperature in a star in hydrostatic equilibrium was recently solved analytically by N.T. Shawagfeh [1] with highly accurate results using decomposition.
Abstract: The Lane-Emden equation describing temperature in a star in hydrostatic equilibrium was recently solved analytically by N.T. Shawagfeh [1] with highly accurate results using decomposition [1–9]. Further consideration suggests some computational advantage, avoidance of the initial transformations, possible generalizations in astrophysics, and a measurement to determine masses of the cepheids.
104 citations
TL;DR: In this article, it was shown that, within the framework of quantum field theory, no faster-than-light communication can be established between observers, and the steps of the demonstration are detailed enough to pinpoint which properties of the theory have been misinterpreted in previous papers claiming the existence of effects that could permit such communication.
Abstract: We spell out a demonstration that, within the framework of quantum field theory, no faster-than-light communication can be established between observers. The steps of the demonstration are detailed enough to pinpoint which properties of the theory have been misinterpreted in previous papers claiming the existence of effects that could permit such communication. The developments described here can also be used to analyze future papers making similar claims.
92 citations