Results 1 to 10 of about 2,270,969 (149)
Microarcsecond instability of the celestial reference frame [PDF]
, 1998 The fluctuation of the angular positions of reference extragalactic radio and optical sources under the influence of the irregular gravitational field of visible Galactic stars is considered.
Kalinina, T. A. +3 more
core +5 more sources
A two-point boundary value problem on a Lorentz manifold arising in A. Poltorak's concept of reference frame [PDF]
, 2006 In A. Poltorak's concept, the reference frame in General Relativity is a certain manifold equipped with a connection. The question under consideration here is whether it is possible to join two events in the space-time by a time-like geodesic if they are
Gliklikh Yu.E +5 more
core +3 more sources
Dynamics of a Quantum Reference Frame [PDF]
, 2007 We analyze a quantum mechanical gyroscope which is modeled as a large spin and used as a reference against which to measure the angular momenta of spin-1/2 particles.
Bartlett S D +8 more
core +2 more sources
Quantum mechanics and the covariance of physical laws in quantum reference frames [PDF]
Nat. Commun. 10, 494 (2019), 2017 In physics, every observation is made with respect to a frame of reference. Although reference frames are usually not considered as degrees of freedom, in all practical situations it is a physical system which constitutes a reference frame. Can a quantum system be considered as a reference frame and, if so, which description would it give of the world?
arxiv +1 more source
Deformed symmetries from quantum relational observables [PDF]
, 2007 Deformed Special Relativity (DSR) is a candidate phenomenological theory to describe the Quantum Gravitational (QG) semi-classical regime. A possible interpretation of DSR can be derived from the notion of deformed reference frame.
Girelli, Florian, Poulin, David
core +1 more source
What is a reference frame in General Relativity? [PDF]
arXiv, 2023 In General Relativity, reference frames must be distinguished from coordinates. The former represent physical systems interacting with the gravitational system, aside from possible approximations, while the latter are mathematical artefacts. We propose a novel three-fold distinction between Idealised Reference Frames, Dynamical Reference Frames and ...
arxiv
Butterfly: Multiple Reference Frames Feature Propagation Mechanism for Neural Video Compression [PDF]
arXiv, 2023 Using more reference frames can significantly improve the compression efficiency in neural video compression. However, in low-latency scenarios, most existing neural video compression frameworks usually use the previous one frame as reference. Or a few frameworks which use the previous multiple frames as reference only adopt a simple multi-reference ...
arxiv
Classical and quantum communication without a shared reference frame [PDF]
, 2003 We show that communication without a shared reference frame is possible using entangled states. Both classical and quantum information can be communicated with perfect fidelity without a shared reference frame at a rate that asymptotically approaches one
C. H. Bennett +8 more
core +2 more sources
Electromagnetic Waves in a Rotating Frame of Reference [PDF]
, 2003 We discuss the electromagnetic measurements of rotating observers and study the propagation of electromagnetic waves in a uniformly rotating frame of reference.
Hauck, John C., Mashhoon, Bahram
core +2 more sources
Quantum mechanics with respect to different reference frames [PDF]
J. Math. Phys. v.48 (2007) 082104, 2007 Geometric (Schrodinger) quantization of nonrelativistic mechanics with respect to different reference frames is considered. In classical nonrelativistic mechanics, a reference frame is represented by a connection on a configuration space fibered over a time axis. Under quantization, it yields a connection on the quantum algebra of Schrodinger operators.
arxiv +1 more source