Relativistic Motion | ScienceGate

Abstract The quantum vacuum plays a central role in physics. Quantum electrodynamics (QED) predicts that the properties of the fermionic quantum vacuum can be probed by extremely large electromagnetic fields. The typical field amplitudes required correspond to the onset of the ‘optical breakdown’ of this vacuum, expected at light intensities >4.7×1029 W/cm2. Approaching this ‘Schwinger limit’ would enable testing of major but still unverified predictions of QED. Yet, the Schwinger limit is seven orders of magnitude above the present record in light intensity achieved by high-power lasers. To close this considerable gap, a promising paradigm consists of reflecting these laser beams off a mirror in relativistic motion, to induce a Doppler effect that compresses the light pulse in time down to the attosecond range and converts it to shorter wavelengths, which can then be focused much more tightly than the initial laser light. However, this faces a major experimental hurdle: how to generate such relativistic mirrors? In this article, we explain how this challenge could nowadays be tackled by using so-called ‘relativistic plasma mirrors’. We argue that approaching the Schwinger limit in the coming years by applying this scheme to the latest generation of petawatt-class lasers is a challenging but realistic objective.

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Bulk Relativistic Motion in a Complete Sample of Radio Selected AGN

Symposium - International Astronomical Union ◽

10.1017/s007418090015524x ◽

1987 ◽

Vol 121 ◽

pp. 287-293

Author(s):

C.J. Schalinski ◽

P. Biermann ◽

A. Eckart ◽

K.J. Johnston ◽

T.Ph. Krichbaum ◽

...

Keyword(s):

Dynamic Range ◽

Radio Sources ◽

Relativistic Motion ◽

Complete Sample ◽

Superluminal Motion ◽

Spectrum Radio ◽

Wide Range ◽

Show Evidence

A complete sample of 13 flat spectrum radio sources is investigated over a wide range of frequencies and spatial resolutions. SSC-calculations lead to the prediction of bulk relativistic motion in all sources. So far 6 out of 7 sources observed with sufficient dynamic range by means of VLBI show evidence for apparent superluminal motion.

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Does relativistic motion always degrade quantum Fisher information?

Physical Review D ◽

10.1103/physrevd.103.125025 ◽

2021 ◽

Vol 103 (12) ◽

Author(s):

Xiaobao Liu ◽

Jiliang Jing ◽

Zehua Tian ◽

Weiping Yao

Keyword(s):

Fisher Information ◽

Quantum Fisher Information ◽

Relativistic Motion

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Entropic uncertainty relations under the relativistic motion

Physics Letters B ◽

10.1016/j.physletb.2013.08.069 ◽

2013 ◽

Vol 726 (1-3) ◽

pp. 527-532 ◽

Cited By ~ 30

Author(s):

Jun Feng ◽

Yao-Zhong Zhang ◽

Mark D. Gould ◽

Heng Fan

Keyword(s):

Uncertainty Relations ◽

Relativistic Motion ◽

Entropic Uncertainty Relations

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STATISTICAL ORIGIN OF SPECIAL AND DOUBLY SPECIAL RELATIVITY

International Journal of Modern Physics Conference Series ◽

10.1142/s201019451301163x ◽

2013 ◽

Vol 23 ◽

pp. 373-378

Author(s):

PETR JIZBA ◽

FABIO SCARDIGLI

Keyword(s):

Brownian Motion ◽

Special Relativity ◽

Coarse Graining ◽

Relativistic Motion ◽

Relativistic Dynamics ◽

Compton Wavelength ◽

Primitive Concept ◽

Short Scale ◽

Doubly Special Relativity ◽

First Time

We show how a Brownian motion on a short scale can originate a relativistic motion on scales larger than particle's Compton wavelength. Special relativity appears to be not a primitive concept, but rather it statistically emerges when a coarse graining average over distances of order, or longer than the Compton wavelength is taken. Our scheme accommodates easily also the doubly special relativistic dynamics. A previously unsuspected, common statistical origin of the two frameworks is brought to light for the first time.

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