Jump to ContentJump to Main Navigation

You are looking at 1-16 of 16 items

  • Keywords: quantum tunneling x
Clear All Modify Search

View:

Landau Critical Velocity

VOLOVIK GRIGORY E.

in The Universe in a Helium Droplet

Published in print:
2009
Published Online:
January 2010
ISBN:
9780199564842
eISBN:
9780191709906
Item type:
chapter
Publisher:
Oxford University Press
DOI:
10.1093/acprof:oso/9780199564842.003.0026
Subject:
Physics, Condensed Matter Physics / Materials, Particle Physics / Astrophysics / Cosmology

This chapter opens the part of the book devoted to the nucleation of excitation of the vacuum — quasiparticles and topological defects. The superfluid vacuum flows with respect to environment (the ... More


FLUCTUATIONS IN JOSEPHSON JUNCTIONS

Anatoly Larkin and Andrei Varlamov

in Theory of Fluctuations in Superconductors

Published in print:
2005
Published Online:
September 2007
ISBN:
9780198528159
eISBN:
9780191713521
Item type:
chapter
Publisher:
Oxford University Press
DOI:
10.1093/acprof:oso/9780198528159.003.0013
Subject:
Physics, Condensed Matter Physics / Materials

The chapter starts with a discussion of the general properties of a Josephson junction. Fluctuation broadening of the emission line due to both thermal fluctuations of the voltage and thermal ... More


What is Quantum Tunneling?

Gershon Kurizki and Goren Gordon

in The Quantum Matrix: Henry Bar's Perilous Struggle for Quantum Coherence

Published in print:
2020
Published Online:
July 2020
ISBN:
9780198787464
eISBN:
9780191829512
Item type:
chapter
Publisher:
Oxford University Press
DOI:
10.1093/oso/9780198787464.003.0013
Subject:
Physics, Theoretical, Computational, and Statistical Physics, Particle Physics / Astrophysics / Cosmology

Henry and Eve have been locked behind bars by their captors. Eve recalls that Henry accidentally stepped into the focal area of multiple laser beams and found himself in her office, having gone ... More


INTRODUCTION

Dante Gatteschi, Roberta Sessoli, and Jacques Villain

in Molecular Nanomagnets

Published in print:
2006
Published Online:
September 2007
ISBN:
9780198567530
eISBN:
9780191718298
Item type:
chapter
Publisher:
Oxford University Press
DOI:
10.1093/acprof:oso/9780198567530.003.0001
Subject:
Physics, Condensed Matter Physics / Materials

This chapter introduces the field of molecular magnetism with a brief overview of the main properties. It takes a historical point of view. Concepts such as magnetic anisotropy, superparamagnetism, ... More


NUCLEATION OF VORTEX RINGS

A.F. Borghesani

in Ions and electrons in liquid helium

Published in print:
2007
Published Online:
January 2008
ISBN:
9780199213603
eISBN:
9780191707421
Item type:
chapter
Publisher:
Oxford University Press
DOI:
10.1093/acprof:oso/9780199213603.003.0009
Subject:
Physics, Condensed Matter Physics / Materials

This chapter examines the wealth of experiments on the nucleation of vortex rings in the vicinity of the giant discontinuity. The nucleation in pure superfluid and in dilute isotopic mixtures has ... More


Molecular Nanomagnets

Dante Gatteschi, Roberta Sessoli, and Jacques Villain

Published in print:
2006
Published Online:
September 2007
ISBN:
9780198567530
eISBN:
9780191718298
Item type:
book
Publisher:
Oxford University Press
DOI:
10.1093/acprof:oso/9780198567530.001.0001
Subject:
Physics, Condensed Matter Physics / Materials

Nanomagnetism is a rapidly expanding area of research in nanoscience, opening perspectives of novel applications. Magnetic molecules are at the very bottom of the possible size of nanomagnets, and ... More


Microscopic interpretation of Arrhenius parameters

Niels E. Henriksen and Flemming Y. Hansen

in Theories of Molecular Reaction Dynamics: The Microscopic Foundation of Chemical Kinetics

Published in print:
2008
Published Online:
January 2010
ISBN:
9780199203864
eISBN:
9780191708251
Item type:
chapter
Publisher:
Oxford University Press
DOI:
10.1093/acprof:oso/9780199203864.003.0008
Subject:
Physics, Condensed Matter Physics / Materials

This chapter reviews the microscopic interpretation of the pre-exponential factor and the activation energy in rate constant expressions of the Arrhenius form. The pre-exponential factor of apparent ... More


More Fun with Photons: Photon‐Splitting and its Uses

Christopher C. Gerry and Kimberley M. Bruno

in The Quantum Divide: Why Schrödinger's Cat is Either Dead or Alive

Published in print:
2013
Published Online:
May 2013
ISBN:
9780199666560
eISBN:
9780191748646
Item type:
chapter
Publisher:
Oxford University Press
DOI:
10.1093/acprof:oso/9780199666560.003.0004
Subject:
Physics, Atomic, Laser, and Optical Physics

This chapter describes experiments involving pairs of photons, which display much richer and more remarkable manifestations of quantum interference than can be seen in single-photon experiments. ... More


Instantons, tunnelling and the end of the world

Tom Lancaster and Stephen J. Blundell

in Quantum Field Theory for the Gifted Amateur

Published in print:
2014
Published Online:
June 2014
ISBN:
9780199699322
eISBN:
9780191779435
Item type:
chapter
Publisher:
Oxford University Press
DOI:
10.1093/acprof:oso/9780199699322.003.0051
Subject:
Physics, Particle Physics / Astrophysics / Cosmology

The final chapter introduces the concept of instantons, which allows the chapter to treat problems involving tunnelling. The chapter asks what would happen if the Universe were to tunnel from a false ... More


Superposition

William J. Mullin

in Quantum Weirdness

Published in print:
2017
Published Online:
March 2017
ISBN:
9780198795131
eISBN:
9780191836480
Item type:
chapter
Publisher:
Oxford University Press
DOI:
10.1093/acprof:oso/9780198795131.003.0004
Subject:
Physics, Particle Physics / Astrophysics / Cosmology

A quantum wave function can be a superposition of multiple waves. A double-well potential has a wave function with elements in each well. The lowest energy state has a symmetric wave function, and ... More


Harmonic Oscillators

William J. Mullin

in Quantum Weirdness

Published in print:
2017
Published Online:
March 2017
ISBN:
9780198795131
eISBN:
9780191836480
Item type:
chapter
Publisher:
Oxford University Press
DOI:
10.1093/acprof:oso/9780198795131.003.0003
Subject:
Physics, Particle Physics / Astrophysics / Cosmology

The first application of quantum ideas to a system with a nonuniform potential energy is to the harmonic oscillator: a pendulum, or a mass on a spring. The result is a quantization of energy with ... More


Nuclear Fusion in Stars

Prasenjit Saha and Paul A. Taylor

in The Astronomers' Magic Envelope: An Introduction to Astrophysics Emphasizing General Principles and Orders of Magnitude

Published in print:
2018
Published Online:
July 2018
ISBN:
9780198816461
eISBN:
9780191858246
Item type:
chapter
Publisher:
Oxford University Press
DOI:
10.1093/oso/9780198816461.003.0006
Subject:
Physics, Particle Physics / Astrophysics / Cosmology

This chapter enumerates some of the many nuclear reactions in stars. It focuses on a general principle: nuclear fusion requires overcoming the Coulomb barrier between nuclei, which is possible ... More


The Schrödinger Equation

M. Suhail Zubairy

in Quantum Mechanics for Beginners: With Applications to Quantum Communication and Quantum Computing

Published in print:
2020
Published Online:
June 2020
ISBN:
9780198854227
eISBN:
9780191888649
Item type:
chapter
Publisher:
Oxford University Press
DOI:
10.1093/oso/9780198854227.003.0017
Subject:
Physics, Particle Physics / Astrophysics / Cosmology, Theoretical, Computational, and Statistical Physics

In this chapter, the Schrödinger equation is “derived” for particles that can be described by de Broglie waves. The Schrödinger equation is very different from the corresponding equation of motion in ... More


Microscopic Interpretation of Arrhenius Parameters

Niels Engholm Henriksen and Flemming Yssing Hansen

in Theories of Molecular Reaction Dynamics: The Microscopic Foundation of Chemical Kinetics

Published in print:
2018
Published Online:
November 2018
ISBN:
9780198805014
eISBN:
9780191843129
Item type:
chapter
Publisher:
Oxford University Press
DOI:
10.1093/oso/9780198805014.003.0008
Subject:
Physics, Atomic, Laser, and Optical Physics

This chapter reviews the microscopic interpretation of the pre-exponential factor and the activation energy in rate constant expressions of the Arrhenius form. The pre-exponential factor of apparent ... More


The Quantum-Mechanical Nucleus

Roger H. Stuewer

in The Age of Innocence: Nuclear Physics between the First and Second World Wars

Published in print:
2018
Published Online:
September 2018
ISBN:
9780198827870
eISBN:
9780191866586
Item type:
chapter
Publisher:
Oxford University Press
DOI:
10.1093/oso/9780198827870.003.0005
Subject:
Physics, History of Physics, Nuclear and Plasma Physics

Rutherford extended his satellite model to encompass an explanation of the alpha decay of radioactive nuclei, which was abruptly disproven in the summer of 1928 by Russian theoretical physicist ... More


Forms and consequences of incompatibility

Geoffrey E. Hill

in Mitonuclear Ecology

Published in print:
2019
Published Online:
June 2019
ISBN:
9780198818250
eISBN:
9780191859465
Item type:
chapter
Publisher:
Oxford University Press
DOI:
10.1093/oso/9780198818250.003.0002
Subject:
Biology, Ecology, Evolutionary Biology / Genetics

To understand the evolutionary consequences of poor coadaptation of mitochondrial and nuclear genes, it is necessary to consider in molecular detail the manifestations of mitochondrial dysfunction. ... More


View: