scholarly journals The coherence of light is fundamentally tied to the quantum coherence of the emitting particle

2021 ◽  
Vol 7 (18) ◽  
pp. eabf8096
Author(s):  
Aviv Karnieli ◽  
Nicholas Rivera ◽  
Ady Arie ◽  
Ido Kaminer
Keyword(s):  
Wave Function ◽  
Quantum Electrodynamics ◽  
Quantum Coherence ◽  
Light Emission ◽  
Quantum Correlations ◽  
High Energy ◽  
High Energy Particle ◽  
Particle Wave Function ◽  
Detection Schemes

Coherent emission of light by free charged particles is believed to be successfully captured by classical electromagnetism in all experimental settings. However, recent advances triggered fundamental questions regarding the role of the particle wave function in these processes. Here, we find that even in seemingly classical experimental regimes, light emission is fundamentally tied to the quantum coherence and correlations of the emitting particle. We use quantum electrodynamics to show how the particle’s momentum uncertainty determines the optical coherence of the emitted light. We find that the temporal duration of Cherenkov radiation, envisioned for almost a century as a shock wave of light, is limited by underlying entanglement between the particle and light. Our findings enable new capabilities in electron microscopy for measuring quantum correlations of shaped electrons. Last, we propose new Cherenkov detection schemes, whereby measuring spectral photon autocorrelations can unveil the wave function structure of any charged high-energy particle.

scholarly journals STUDY OF NUCLEON CORRELATIONS IN HEAVY NUCLEI WITH HIGH ENERGY ELASTIC ELECTRON SCATTERING

2020 ◽  
Vol 2 ◽  
pp. 61
Author(s):  
C. E. Vellidis ◽  
B. Frois ◽  
D. Goutte ◽  
N. Papadakis ◽  
C. N. Papanicolas ◽  
...  
Keyword(s):  
Wave Function ◽  
Electron Scattering ◽  
High Energy ◽  
Elastic Cross Section ◽  
Scattering Data ◽  
Elastic Electron Scattering ◽  
Heavy Nuclei ◽  
Independent Particle ◽  
Particle Wave Function ◽  
New Research

During the last decade the detailed analysis of several observables and especially of electron scattering data has shown conclusively the presence of short-range nucleon correlations. As a result the degree to which the shape and amplitude of a correlated wave function can be approximated by an independent particle wave function has emerged as a question of fundamental importance. A presentation will be given below of an experiment that will be performed at the Bates Linear Accelerator Center attempting to study this question. The elastic cross-section ratios from 208,207,206Pb,205Ti(e,e) will be measured with high accuracy up to momentum transfers of 3.4 fm^-1 in order to study the influence of correlations on the shape of the 3s1/2 proton wave function. The purpose, motivation and main aspects of the new research will be explained and the experimental considerations together with the running scenario for the experiment will be presented.

Study of collisionless high-energy charged particle losses for stellarators in presence of resonant perturbations of the magnetic field

2016 ◽  
Vol 82 (1) ◽  
Author(s):  
V. V. Nemov ◽  
S. V. Kasilov ◽  
W. Kernbichler ◽  
V. N. Kalyuzhnyj
Keyword(s):  
Magnetic Field ◽  
Negative Impact ◽  
High Energy ◽  
Numerical Code ◽  
High Energy Particle ◽  
Magnetic Islands ◽  
Energy Particle ◽  
Magnetic Surfaces ◽  
The Magnetic Field

Using a numerical code based on guiding centre drift equations, collisionless high energy particle losses, and in particular ${\it\alpha}$-particle losses, are studied for a number of stellarator configurations in the presence of magnetic islands caused by resonant perturbations of magnetic surfaces. Standard stellarator configurations, as well as an optimized quasi-helically symmetric stellarator, are used in this study. It is found that the role of islands in collisionless ${\it\alpha}$-particle losses is practically negligible for standard stellarators, however, for optimized stellarators, islands can have a negative impact.

scholarly journals Propagation of quantum particles in Brans–Dicke spacetime: The case of gamma ray bursts

2015 ◽  
Vol 30 (22) ◽  
pp. 1540032 ◽  
Author(s):  
Salvatore Capozziello ◽  
Gaetano Lambiase
Keyword(s):  
Wave Function ◽  
Gravitational Field ◽  
Gamma Ray ◽  
Naked Singularity ◽  
High Energy ◽  
Gamma Ray Bursts ◽  
Gravitational Coupling ◽  
Scalar Particles ◽  
Quantum Particles

The propagation of boson particles in a gravitational field described by the Brans–Dicke (BD) theory of gravity is analyzed. We derive the wave function of the scalar particles, and the effective potential experienced by the quantum particles considering the role of the varying gravitational coupling. Besides, we calculate the probability to find the scalar particles near the region where a naked singularity is present. The extremely high energy radiated in such a situation could account for the huge emitted power observed in gamma ray bursts (GRBs).

scholarly journals Role of oxygen vacancies on light emission mechanisms in SrTiO3induced by high-energy particles

2017 ◽  
Vol 50 (15) ◽  
pp. 155303 ◽  
Author(s):  
M L Crespillo ◽  
J T Graham ◽  
F Agulló-López ◽  
Y Zhang ◽  
W J Weber
Keyword(s):  
Oxygen Vacancies ◽  
Light Emission ◽  
High Energy ◽  
High Energy Particles

Microfabrication research at the National Submicron Facility

1983 ◽  
Vol 41 ◽  
pp. 86-89
Author(s):  
E.D. Wolf
Keyword(s):  
Integrated Circuits ◽  
Particle Physics ◽  
High Speed ◽  
New Technology ◽  
High Energy ◽  
High Energy Particle ◽  
New Science ◽  
Wide Range ◽  
Intermediate Domain ◽  
Circuit Function

Most microelectronics devices and circuits operate faster, consume less power, execute more functions and cost less per circuit function when the feature-sizes internal to the devices and circuits are made smaller. This is part of the stimulus for the Very High-Speed Integrated Circuits (VHSIC) program. There is also a need for smaller, more sensitive sensors in a wide range of disciplines that includes electrochemistry, neurophysiology and ultra-high pressure solid state research. There is often fundamental new science (and sometimes new technology) to be revealed (and used) when a basic parameter such as size is extended to new dimensions, as is evident at the two extremes of smallness and largeness, high energy particle physics and cosmology, respectively. However, there is also a very important intermediate domain of size that spans from the diameter of a small cluster of atoms up to near one micrometer which may also have just as profound effects on society as “big” physics.

TEM study of amorphization of Cu and Ti foils by cold-rolling

1990 ◽  
Vol 48 (4) ◽  
pp. 146-147
Author(s):  
W. A. Chiou ◽  
N. L. Jeon ◽  
Genbao Xu ◽  
M. Meshii
Keyword(s):  
Solid State ◽  
Cold Rolling ◽  
High Energy ◽  
Rapid Quenching ◽  
Vapor Condensation ◽  
Metallic Alloys ◽  
Solid State Reactions ◽  
High Energy Particle ◽  
Amorphous Metallic Alloys ◽  
Thin Foils

For many years amorphous metallic alloys have been prepared by rapid quenching techniques such as vapor condensation or melt quenching. Recently, solid-state reactions have shown to be an alternative for synthesizing amorphous metallic alloys. While solid-state amorphization by ball milling and high energy particle irradiation have been investigated extensively, the growth of amorphous phase by cold-rolling has been limited. This paper presents a morphological and structural study of amorphization of Cu and Ti foils by rolling.Samples of high purity Cu (99.999%) and Ti (99.99%) foils with a thickness of 0.025 mm were used as starting materials. These thin foils were cut to 5 cm (w) × 10 cm (1), and the surface was cleaned with acetone. A total of twenty alternatively stacked Cu and Ti foils were then rolled. Composite layers following each rolling pass were cleaned with acetone, cut into half and stacked together, and then rolled again.

High-Energy Particle Diffraction

2002 ◽  
Author(s):  
Vincenzo Barone ◽  
Enrico Predazzi
Keyword(s):  
High Energy ◽  
High Energy Particle ◽  
Energy Particle

Influence of Ultrasound on the Formation of High-energy Particle Tracks in a Liquid-hydrogen Bubble Chamber

1969 ◽  
Vol 99 (9) ◽  
pp. 149-151
Author(s):  
V.A. Akulichev ◽  
L.R. Gavrilov ◽  
V.G. Grebinnik ◽  
V.A. Zhukov ◽  
G. Libman ◽  
...  
Keyword(s):  
Bubble Chamber ◽  
High Energy ◽  
Liquid Hydrogen ◽  
High Energy Particle ◽  
Hydrogen Bubble ◽  
Hydrogen Bubble Chamber ◽  
Energy Particle ◽  
Particle Tracks

Fundamentality

2017 ◽  
Author(s):  
Richard Healey
Keyword(s):  
Quantum Theory ◽  
High Energy Physics ◽  
Physical Property ◽  
Natural World ◽  
High Energy ◽  
Quantum Field Theories ◽  
Fundamental Physics ◽  
The World ◽  
Energy Physics

The metaphor that fundamental physics is concerned to say what the natural world is like at the deepest level may be cashed out in terms of entities, properties, or laws. The role of quantum field theories in the Standard Model of high-energy physics suggests that fundamental entities, properties, and laws are to be sought in these theories. But the contextual ontology proposed in Chapter 12 would support no unified compositional structure for the world; a quantum state assignment specifies no physical property distribution sufficient even to determine all physical facts; and quantum theory posits no fundamental laws of time evolution, whether deterministic or stochastic. Quantum theory has made a revolutionary contribution to fundamental physics because its principles have permitted tremendous unification of science through the successful application of models constructed in conformity to them: but these models do not say what the world is like at the deepest level.

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