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Books > Science & Mathematics > Physics > Atomic & molecular physics
This volume continues the tradition of the "Advances" series. It
contains contributions from experts in the field of atomic,
molecular, and optical (AMO) physics. The articles contain some
review material, but are intended to provide a comprehensive
picture of recent important developments in AMO physics. Both
theoretical and experimental articles are included in the volume.
International experts
Comprehensive articles
New developments"
This volume continues the tradition of the "Advances" series. It
contains contributions from experts in the field of atomic,
molecular, and optical (AMO) physics. The articles contain some
review material, but are intended to provide a comprehensive
picture of recent important developments in AMO physics. Both
theoretical and experimental articles are included in the volume.
International experts
Comprehensive articles
New developments"
This book gathers the lecture notes of courses given at the 2010
summer school in theoretical physics in Les Houches, France,
Session XCIV. Written in a pedagogical style, this volume
illustrates how the field of quantum gases has flourished at the
interface between atomic physics and quantum optics, condensed
matter physics, nuclear and high-energy physics, non-linear physics
and quantum information. The physics of correlated atoms in optical
lattices is covered from both theoretical and experimental
perspectives, including the Bose and Fermi Hubbard models, and the
description of the Mott transition. Few-body physics with cold
atoms has made spectacular progress and exact solutions for 3-body
and 4-body problems have been obtained. The remarkable collisional
stability of weakly bound molecules is at the core of the studies
of molecular BEC regimes in Fermi gases. Entanglement in quantum
many-body systems is introduced and is a key issue for quantum
information processing. Rapidly rotating quantum gases and
optically induced gauge fields establish a remarkable connection
with the fractional quantum Hall effect for electrons in
semiconductors. Dipolar quantum gases with long range and
anisotropic interaction lead to new quantum degenerate regimes in
atoms with large magnetic moments, or electrically aligned polar
molecules. Experiments with ultracold fermions show how quantum
gases serve as ''quantum simulators'' of complex condensed matter
systems through measurements of the equation of state. Similarly,
the recent observation of Anderson localization of matter waves in
a disordered optical potential makes a fruitful link with the
behaviour of electrons in disordered systems.
This volume continues the tradition of the Advances series. It
contains contributions from experts in the field of atomic,
molecular, and optical (AMO) physics. The articles contain some
review material, but are intended to provide a comprehensive
picture of recent important developments in AMO physics. Both
theoretical and experimental articles are included in the volume.
- International experts
- Comprehensive articles
- New developments
B Factories are particle colliders at which specific subatomic
particles - B mesons - are produced abundantly. The purpose is to
study the properties of their decays in great detail in order to
shed light on a mystery of eminently larger scale: why do we live
in a universe composed of anti-matter? This book introduces readers
to the physics laws of the CP asymmetry, touching on experimental
requirements needed to perform such measurements at the subatomic
level, and illustrating the main findings of the contemporary B
Factories.
Gas phase molecular spectroscopy is a powerful tool for obtaining
information on the geometry and internal structure of isolated
molecules as well as on the interactions that they undergo. It
enables the study of fundamental parameters and processes and is
also used for the sounding of gas media through optical techniques.
It has been facing always renewed challenges, due to the
considerable improvement of experimental techniques and the
increasing demand for accuracy and scope of remote sensing
applications.
In practice, the radiating molecule is usually not isolated but
diluted in a mixture at significant total pressure. The collisions
among the molecules composing the gas can have a large influence on
the spectral shape, affecting all wavelength regions through
various mechanisms. These must be taken into account for the
correct analysis and prediction of the resulting spectra.
This book reviews our current experimental and theoretical
knowledge and the practical consequences of collisional effects on
molecular spectral shapes in neutral gases. General expressions are
first given. They are formal of difficult use for practical
calculations often but enable discussion of the approximations
leading to simplified situations. The first case examined is that
of isolated transitions, with the usual pressure broadening and
shifting but also refined effects due to speed dependence and
collision-induced velocity changes. Collisional line-mixing, which
invalidates the notion of isolated transitions and has spectral
consequences when lines are closely spaced, is then discussed
within the impact approximation. Regions where the contributions of
many distant lines overlap, such as troughsbetween transitions and
band wings, are considered next. For a description of these far
wings the finite duration of collisions and concomitant breakdown
of the impact approximation must be taken into account. Finally,
for long paths or elevated pressures, the dipole or polarizability
induced by intermolecular interactions can make significant
contributions. Specific models for the description of these
collision induced absorption and light scattering processes are
presented.
The above mentioned topics are reviewed and discussed from a
threefold point of view: the various models, the available data,
and the consequences for applications including heat transfer,
remote sensing and optical sounding. The extensive bibliography and
discussion of some remaining problems complete the text.
- State of the art on the subject
- A bibliography of nearly 1000 references
- Tools for practical calculations
- Consequences for other scientific fields
- Numerous illustrative examples
- Fulfilling a need since there is no equivalent monograph on the
subject
The dynamics of quantum systems exposed to ultrafast (at the
femtosecond time-scale) and strong laser radiation has a highly
non-linear character, leading to a number of new phenomena, outside
the reach of traditional spectroscopy. The current laser technology
makes feasible the probing and control of quantum-scale systems
with fields that are as strong as the interatomic Coulombic
interactions and time resolution that is equal to (or less than)
typical atomic evolution times. It is indispensable that any
theoretical description of the induced physical processes should
rely on the accurate calculation of the atomic structure and a
realistic model of the laser radiation as pulsed fields. This book
aims to provide an elementary introduction of theoretical and
computational methods and by no means is anywhere near to complete.
The selection of the topics as well as the particular viewpoint is
best suited for early-stage students and researchers; the included
material belongs in the mainstream of theoretical approaches albeit
using simpler language without sacrificing mathematical accuracy.
Therefore, subjects such as the Hilbert vector-state,
density-matrix operators, amplitude equations, Liouville equation,
coherent laser radiation, free-electron laser, Dyson-chronological
operator, subspace projection, perturbation theory, stochastic
density-matrix equations, time-dependent SchrAdinger equation,
partial-wave analysis, spherical-harmonics expansions, basis and
grid wavefunction expansions, ionization, electron kinetic-energy
and angular distributions are presented within the context of
laser-atom quantum dynamics.
How the scientific community overlooked, ignored, and denied the
catastrophic fallout of decades of nuclear testing in the American
West In December of 1950, President Harry Truman gave authorization
for the Atomic Energy Commission to conduct weapons tests and
experiments on a section of a Nevada gunnery range. Over the next
eleven years, more than a hundred detonations were conducted at the
Nevada Test Site, and radioactive debris dispersed across the
communities just downwind and through much of the country. In this
important work, James C. Rice tells the hidden story of nuclear
weapons testing and the negligence of the US government in
protecting public health. Downwind of the Atomic State focuses on
the key decisions and events shaping the Commission's mismanagement
of radiological contamination in the region, specifically on how
the risks of fallout were defined and redefined, or, importantly,
not defined at all, owing to organizational mistakes and the
impetus to keep atomic testing going at all costs. Rice shows that
although Atomic Energy Commission officials understood open-air
detonations injected radioactive debris into the atmosphere, they
did not understand, or seem to care, that the radioactivity would
irrevocably contaminate these communities. The history of the
atomic Southwest should be a wake-up call to everyone living in a
world replete with large, complex organizations managing risky
technological systems. The legacy of open-air detonations in Nevada
pushes us to ask about the kinds of risks we are unwittingly living
under today. What risks are we being exposed to by large
organizations under the guise of security and science?
Volume 54 of the Advances Series contains ten contributions,
covering a diversity of subject areas in atomic, molecular and
optical physics. The article by Regal and Jin reviews the
properties of a Fermi degenerate gas of cold potassium atoms in the
crossover regime between the Bose-Einstein condensation of
molecules and the condensation of fermionic atom pairs. The
transition between the two regions can be probed by varying an
external magnetic field. Sherson, Julsgaard and Polzik explore the
manner in which light and atoms can be entangled, with applications
to quantum information processing and communication. They report on
the result of recent experiments involving the entanglement of
distant objects and quantum memory of light. Recent developments in
cold Rydberg atom physics are reviewed in the article by Choi,
Kaufmann, Cubel-Liebisch, Reinhard, and Raithel. Fascinating
experiments are described in which cold, highly excited atoms
(???Rydberg??? atoms) and cold plasmas are generated. Evidence for
a collective excitation of Rydberg matter is also presented.
Griffiin and Pindzola offer an account of non-perturbative quantal
methods for electron-atom scattering processes. Included in the
discussion are the R-matrix with pseudo-states method and the
time-dependent close-coupling method. An extensive review of the
R-matrix theory of atomic, molecular, and optical processes is
given by Burke, Noble, and Burke. They present a systematic
development of the R-matrix method and its applications to various
processes such as electron-atom scattering, atomic photoionization,
electron-molecule scattering, positron-atom scattering, and
atomic/molecular multiphoton processes. Electron impactexcitation
of rare-gas atoms from both their ground and metastable states is
discussed in the article by Boffard, Jung, Anderson, and Lin.
Excitation cross sections measured by the optical method are
reviewed with emphasis on the physical interpretation in terms of
electronic structure of the target atoms. Ozier and Moazzen-Ahmadi
explore internal rotation of symmetric top molecules. Developments
of new experimental methods based on high-resolution torsional,
vibrational, and molecular beam spectroscopy allow accurate
determination of internal barriers for these symmetric molecules.
The subject of attosecond and angstrom science is reviewed by
Niikura and Corkum. The underlying physical mechanisms allowing one
to generate attosecond radiation pulses are described and the
technology needed for the preparation of such pulses is discussed.
LeGou??t, Bretenaker, and Lorger?? describe how rare earth ions
embedded in crystals can be used for processing optically carried
broadband radio-frequency signals. Methods for reaching tens of
gigahertz instantaneous bandwidth with submegahertz resolution
using such devices are analyzed in detail and demonstrated
experimentally. Finally, in the article by Illing, Gauthier, and
Roy, it is shown that small perturbations applied to optical
systems can be used to suppress or control optical chaos,
spatio-temporal dynamics, and patterns. Applications of these
techniques to communications, laser stabilization, and improving
the sensitivity of low-light optical switches are explored.
?? International experts
?? Comprehensive articles
?? New developments
This book deals with the practice of Optical Radiation Measurements
with introductory material to introduce the topics discussed. It
will be most useful for students, scientists and engineers working
in any academic, industrial or governmental projects related to
optical radiation. The book contains chapters that treat in detail
the procedures and techniques for the characterization of both
sources and detectors to the highest degree of accuracy and
reliability. It has a chapter devoted specifically to optical
measurements of laser sources and fiberoptics for communication and
a chapter devoted to uncertainty in measurement and its treatment
with real examples of optical measurements. The book contains
introductory materials that will allow a newcomer to radiometry to
develop the expertise to perform exacting and accurate measurement.
The authors stress the various causes of uncertainty in each phase
of a measurement and thus allow for users to arrive at a correct
assessment of their uncertainty of measurement in their particular
circumstance.
. Authors are from the Standards laboratories of AUSTRALIA, CANADA,
ENGLAND, GERMANY and the USA.
. Latest techniques and practice of laboratory measurements to
achieve the highest accuracy in the use of sources or
detectors.
. Unique illustrations of the apparatus and measurement
techniques.
. Practical measurement examples of calibration with full
uncertainty analysis.
. Comprehensive treatment of optical standards such as sources,
detectors and radiometers.
. A complete chapter on laser power measurements and standards for
fiber optic measurements
. A complete chapter on correlations in radiometry and practical
examples.
. A chapter devoted to diffraction effects in radiometry"
This is an overview of single molecule physics, the study of both
equilibrium and non-equilibrium properties at the single molecule
level. It begins with an introduction to this fascinating science
and includes a chapter on how to build the most popular instrument
for single molecule biophysics, the total internal reflection
fluorescence (TIRF) microscope. It concludes with the Poisson
process approach to statistical mechanics, explaining how to relate
the process to diverse areas and see how data analysis and error
bars are integral parts of science.
All living matter is comprised of cells; small compartments
isolated from the environment by a cell membrane and filled with
concentrated solutions of various organic and inorganic compounds.
Some organisms are a single cell and all life functions are
performed by that cell. Others have groups of cells, or entire
organs, specializing in one particular function. The survival of
the entire organism depends on all its cells and organs fulfilling
their roles. The aim of this book is to investigate the basic
physical phenomena occurring in cells. These physical transport
processes facilitate chemical reactions in the cell and that, in
turn, leads to the biological functions necessary for the cell to
satisfy its role in the mother organism. Ultimately, the goal of
every cell is to stay alive and to fulfil its function as a part of
a larger organ or organism. This first volume is an inventory of
physical transport processes occurring in cells, while the second
volume will take a closer look at how complex biological and
physiological cell phenomena result from these very basic physical
processes.
Atomic Physics provides a concise treatment of atomic physics and a
basis to prepare for work in other disciplines that are underpinned
by atomic physics, such as chemistry, biology and several aspects
of engineering science. The focus is mainly on atomic structure
since this is what is primarily responsible for the physical
properties of atoms. After a brief introduction to some basic
concepts, the perturbation theory approach follows the hierarchy of
interactions starting with the largest. The other interactions of
spin, and angular momentum of the outermost electrons with each
other, the nucleus and external magnetic fields are treated in
order of descending strength. A spectroscopic perspective is
generally taken by relating the observations of atomic radiation
emitted or absorbed to the internal energy levels involved. X-ray
spectra are then discussed in relation to the energy levels of the
innermost electrons. Finally, a brief description is given of some
modern, laser-based, spectroscopic methods for the high-resolution
study of the details of atomic structure.
The Generator Coordinate Method (GCM) is a mathematical tool for
the understanding of stable atomic nuclei. Electronic, Atomic and
Molecular Calculations is designed to assist scientists applying
GCM in the analysis of the electronic structure of atoms and
molecules. There have been numerous publications covering nuclear
physics and electronic structure of atoms and molecules, but this
book is unique in the sense that it specifically addresses the
application of GCM for such purposes. Using this book, researchers
will be able to understand and calculate the electronic structure
in a novel manner.
* Only book that covers the Generator Coordinate Method and
applications for atoms, molecules and nuclei
* Clearly describes how the GCM can be used as a powerful tool for
design of atomic basis sets
* Reviews current literature on GCM in atomic and molecular fields
and a large part of the literature of the method in nuclear physics
This book addresses problems in three main developments in modern
condensed matter physics- namely topological superconductivity,
many-body localization and strongly interacting
condensates/superfluids-by employing fruitful analogies from
classical mechanics. This strategy has led to tangible results,
firstly in superconducting nanowires: the density of states, a
smoking gun for the long sought Majorana zero mode is calculated
effortlessly by mapping the problem to a textbook-level classical
point particle problem. Secondly, in localization theory even the
simplest toy models that exhibit many-body localization are
mathematically cumbersome and results rely on simulations that are
limited by computational power. In this book an alternative
viewpoint is developed by describing many-body localization in
terms of quantum rotors that have incommensurate rotation
frequencies, an exactly solvable system. Finally, the fluctuations
in a strongly interacting Bose condensate and superfluid, a
notoriously difficult system to analyze from first principles, are
shown to mimic stochastic fluctuations of space-time due to quantum
fields. This analogy not only allows for the computation of
physical properties of the fluctuations in an elegant way, it sheds
light on the nature of space-time. The book will be a valuable
contribution for its unifying style that illuminates conceptually
challenging developments in condensed matter physics and its use of
elegant mathematical models in addition to producing new and
concrete results.
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