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ATOMIC FINE STRUCTURE

Norman F. Ramsey

in Molecular Beams

Published in print:
1986
Published Online:
September 2007
ISBN:
9780198520214
eISBN:
9780191706325
Item type:
chapter
Publisher:
Oxford University Press
DOI:
10.1093/acprof:oso/9780198520214.003.0012
Subject:
Physics, Atomic, Laser, and Optical Physics

Atomic fine structure is the separation of atomic energy levels due to the interaction of the electron spin with atomic fields at the electron. This structure was discovered in optical spectra long ... More


Dealing with Naturalness

Gian Francesco Giudice

in A Zeptospace Odyssey: A Journey into the Physics of the LHC

Published in print:
2009
Published Online:
February 2010
ISBN:
9780199581917
eISBN:
9780191723001
Item type:
chapter
Publisher:
Oxford University Press
DOI:
10.1093/acprof:oso/9780199581917.003.0009
Subject:
Physics, Particle Physics / Astrophysics / Cosmology

The naturalness problem is regarded by most physicists as one of the primary motivations for expecting new particles or new phenomena in zeptospace. This conceptual problem arises from the existence ... More


Periodically modulated quantum nonlinear oscillators

M. I. Dykman

in Fluctuating Nonlinear Oscillators: From Nanomechanics to Quantum Superconducting Circuits

Published in print:
2012
Published Online:
September 2012
ISBN:
9780199691388
eISBN:
9780191742255
Item type:
chapter
Publisher:
Oxford University Press
DOI:
10.1093/acprof:oso/9780199691388.003.0007
Subject:
Physics, Theoretical, Computational, and Statistical Physics

This chapter describes the dynamics of a modulated oscillator for resonant and nonresonant modulation. Two types of resonant modulation are considered: additive, with frequency close to the ... More


Signatures of the Artist: The Vital Imperfections That Make Our Universe Habitable

Steven E. Vigdor

Published in print:
2018
Published Online:
March 2018
ISBN:
9780198814825
eISBN:
9780191852954
Item type:
book
Publisher:
Oxford University Press
DOI:
10.1093/oso/9780198814825.001.0001
Subject:
Physics, Particle Physics / Astrophysics / Cosmology

This book provides a nonmathematical survey of the past half-century of research in particle physics, nuclear physics, and cosmology bearing on the physical conditions that allow our universe to ... More


Fundamentals and Applications of Magnetic Materials

Kannan M. Krishnan

Published in print:
2016
Published Online:
December 2016
ISBN:
9780199570447
eISBN:
9780191813504
Item type:
book
Publisher:
Oxford University Press
DOI:
10.1093/acprof:oso/9780199570447.001.0001
Subject:
Physics, Condensed Matter Physics / Materials

This book provides a comprehensive discussion of magnetism, magnetic materials, and related applications. The logical train of thought progresses, in four parts, from physics of magnetism (§1–5), ... More


The “What” and “Why” Questions

Massimiliano Di Ventra

in The Scientific Method: Reflections from a Practitioner

Published in print:
2018
Published Online:
June 2018
ISBN:
9780198825623
eISBN:
9780191864605
Item type:
chapter
Publisher:
Oxford University Press
DOI:
10.1093/oso/9780198825623.003.0016
Subject:
Physics, History of Physics, Theoretical, Computational, and Statistical Physics

This chapter clarifies that Science cannot address either ontological (“What”) or teleological (“Why”) questions about the natural world. Therefore, “understanding” in Science is completely different ... More


From infinities in quantum electrodynamics to the general renormalization group

Jean Zinn-Justin

in From Random Walks to Random Matrices

Published in print:
2019
Published Online:
August 2019
ISBN:
9780198787754
eISBN:
9780191829840
Item type:
chapter
Publisher:
Oxford University Press
DOI:
10.1093/oso/9780198787754.003.0004
Subject:
Physics, Theoretical, Computational, and Statistical Physics

Chapter 4 describes a few important steps which have led from the discovery of infinities in quantum electrodynamics in the calculation of Feynman diagrams (ultraviolet divergences (UV divergences)) ... More


Helium

Massimo Inguscio and Leonardo Fallani

in Atomic Physics: Precise Measurements and Ultracold Matter

Published in print:
2013
Published Online:
December 2013
ISBN:
9780198525844
eISBN:
9780191780059
Item type:
chapter
Publisher:
Oxford University Press
DOI:
10.1093/acprof:oso/9780198525844.003.0004
Subject:
Physics, Atomic, Laser, and Optical Physics

This chapter starts with the spectrum of helium, which has qualitatively different properties from hydrogen and alkali atoms, owing to the presence of two electrons. It discuses important ... More


Signaling and Measurement Dependence

Valerio Scarani

in Bell Nonlocality

Published in print:
2019
Published Online:
September 2019
ISBN:
9780198788416
eISBN:
9780191830327
Item type:
chapter
Publisher:
Oxford University Press
DOI:
10.1093/oso/9780198788416.003.0011
Subject:
Physics, Particle Physics / Astrophysics / Cosmology, Theoretical, Computational, and Statistical Physics

This last chapter studies the relaxation of the conditions of no-signaling and measurement independence. For signaling models, after stressing the need for fine-tuning, it is shown that the speed of ... More


Formalizing Bell Nonlocality

Valerio Scarani

in Bell Nonlocality

Published in print:
2019
Published Online:
September 2019
ISBN:
9780198788416
eISBN:
9780191830327
Item type:
chapter
Publisher:
Oxford University Press
DOI:
10.1093/oso/9780198788416.003.0002
Subject:
Physics, Particle Physics / Astrophysics / Cosmology, Theoretical, Computational, and Statistical Physics

This chapter covers the essential mathematical tools for the study of nonlocality. It begins with the main object under study: a collection of several probability distributions usually called ... More


Semiconductor Materials and Nanostructures

Alexey A. Toropov and Tatiana V. Shubina

in Plasmonic Effects in Metal-Semiconductor Nanostructures

Published in print:
2015
Published Online:
May 2015
ISBN:
9780199699315
eISBN:
9780191799433
Item type:
chapter
Publisher:
Oxford University Press
DOI:
10.1093/acprof:oso/9780199699315.003.0006
Subject:
Physics, Atomic, Laser, and Optical Physics

This chapter introduces the physics of semiconductor heterostructures and nanostructures. The electronic and optical properties of the most common III–V and II–VI binary semiconductor compounds and ... More


Holograms on Display

Sean F. Johnston

in Holograms: A Cultural History

Published in print:
2015
Published Online:
November 2015
ISBN:
9780198712763
eISBN:
9780191781131
Item type:
chapter
Publisher:
Oxford University Press
DOI:
10.1093/acprof:oso/9780198712763.003.0009
Subject:
Physics, History of Physics

From the late 1970s, cultural understandings of holograms fragmented and blended in new ways. The products of artisanal cottage industry mutated into visually surprising and aesthetically-pleasing ... More


Cosmic inflation

Andreas Albrecht

in Post-Planck Cosmology: Lecture Notes of the Les Houches Summer School: Volume 100, July 2013

Published in print:
2015
Published Online:
March 2015
ISBN:
9780198728856
eISBN:
9780191795794
Item type:
chapter
Publisher:
Oxford University Press
DOI:
10.1093/acprof:oso/9780198728856.003.0001
Subject:
Physics, Particle Physics / Astrophysics / Cosmology

Cosmic inflation theory has seen astonishing success as an account of the origin of cosmic structure and cosmic gravitational waves. This success strongly supports theories with a brief period of ... More


The argument from design

Andrew Briggs, Hans Halvorson, and Andrew Steane

in It Keeps Me Seeking: The Invitation from Science, Philosophy and Religion

Published in print:
2018
Published Online:
October 2018
ISBN:
9780198808282
eISBN:
9780191866944
Item type:
chapter
Publisher:
Oxford University Press
DOI:
10.1093/oso/9780198808282.003.0011
Subject:
Physics, History of Physics

The argument from design is, generically, an attempt to argue from features of the natural world to the conclusion that it is the result of intelligent or considered creative action. The chapter ... More


Magnetic Domains and the Process of Magnetization

Kannan M. Krishnan

in Fundamentals and Applications of Magnetic Materials

Published in print:
2016
Published Online:
December 2016
ISBN:
9780199570447
eISBN:
9780191813504
Item type:
chapter
Publisher:
Oxford University Press
DOI:
10.1093/acprof:oso/9780199570447.003.0007
Subject:
Physics, Condensed Matter Physics / Materials

In this chapter we introduce the relevant energy terms to determine the formation of domains. The regions of transition separating one domain from the next are classified as Bloch, Néel, or cross-tie ... More


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