A prominent aspect of quantum theory, tunneling arises in a variety of contexts across several fields of study, including nuclear, atomic, molecular, and optical physics and has led to technologically relevant applications in mesoscopic science. Exploring mechanisms and consequences, Dynamical Tunneling: Theory and Experiment presents the work of i

In the last two decades remarkable progress has been made in understanding and describing tunneling processes in complex systems in terms of classical trajectories. This book introduces recent concepts and achievements with particular emphasis on a dynamical formulation and relations to specific systems in mesoscopic, molecular, and atomic physics. Advanced instanton techniques, e.g. for decay rates and tunnel splittings, are discussed in the first part. The second part covers current developments for wave-packet tunneling in real-time, and the third part describes thermodynamics and dynamical approaches for barrier transmission in statistical, particularly dissipative systems.

A graduate-level text that examines the semiclassical approach to quantum mechanics Physical systems have been traditionally described in terms of either classical or quantum mechanics. But in recent years, semiclassical methods have developed rapidly, providing deep physical insight and computational tools for quantum dynamics and spectroscopy. In this book, Eric Heller introduces and develops this subject, demonstrating its power with many examples. In the first half of the book, Heller covers relevant aspects of classical mechanics, building from them the semiclassical way through the semiclassical limit of the Feynman path integral. The second half of the book applies this approach to various kinds of spectroscopy, such as molecular spectroscopy and electron imaging and quantum dynamical systems with an emphasis on tunneling. Adopting a distinctly time-dependent viewpoint, Heller argues for semiclassical theories from experimental and theoretical vantage points valuable to research in physics and chemistry. Featuring more than two hundred figures, the book provides a geometric, phase-space, and coordinate-space pathway to greater understanding. Filled with practical examples and applications, The Semiclassical Way to Dynamics and Spectroscopy is a comprehensive presentation of the tools necessary to successfully delve into this unique area of quantum mechanics. A comprehensive approach for using classical mechanics to do quantum mechanics More than two hundred figures to assist intuition Emphasis on semiclassical Green function and wave packet perspective, as well as tunneling and spectroscopy Chapters include quantum mechanics of classically chaotic systems, quantum scarring, and other modern dynamical topics

From March 30th to April 3rd, 1992, a NATO Advanced Research workshop entitled "Time Dependent Quantum Molecular Dynamics: Theory and Experiment" was held at Snowbird, Utah. The organizing committee consisted of J. BROECKHOVE (Antwerp, Belgium), L. CEDERBAUM (Heidelberg, Germany), L. LATHOUWERS (Antwerp, Belgium), N. OHRN (Gainesville, Florida) and J. SIMONS (Salt Lake City, Utah). Fifty-two participants from eleven different countries attended the meeting at which thirty-three talks and one poster session were held. Twenty-eight participants submitted contributions to the proceedings of the meeting, which are reproduced in this volume. The workshop brought together experts in different areas 0 f molecular quantum dynamics, all adhering to the time dependent approach. The aim was to discuss and compare methods and applications. The ~amiliarityo~ the aUdience with the concepts o~ time dependent approaches greatly facilitated topical discussions and probing towards new applications. A broad area of subject matter was covered including time resolved laser chemistry, intramolecular dynamics, photodissociation dynamics, reactive and inelastic collisions as well as new time dependent methodologies. This diversity in applications is reflected in the contributions included in this volume .

Spectral twinkling: A new example of singularity-dominated strong fluctuations (summary) / M. Berry -- Quantum chaos in GaAs/AlxGa1-x As microstructures / A. M. Chang -- Ground state spin and Coulomb blockade peak motion in chaotic quantum dots / J. A. Folk ... [et al.] -- Quantum chaos and transport phenomena in quantum dots / A. S. Sachrajda -- Conductance of a ballistic electron billiard in a magnetic field: Does the semiclassical approach apply? / T. Blomquist and I. Zozoulenko -- Semiconductor billiards - a controlled environment to study fractals / R. P. Taylor ... [et al.] -- Experimental signatures of wavefunction scarring in open semiconductor billiards / J. P. Bird, R. Akis, and D. K. Ferry -- Chaos in quantum ratchets / H. Linke ... [et al.] -- Statistics of resonances in open billiards / H. Ishio -- The exterior and interior edge states of magnetic billiards: Spectral statistics and correlations / K. Hornberger and U. Smilansky -- Non-universality of chaotic classical dynamics: implications for quantum chaos / M. Wilkinson -- Chaos and interactions in quantum dots / Y. Alhassid -- Stochastic aspects of many-body systems: The embedded Gaussian ensembles / H. A. Weidenmuller -- Quantum-classical correspondence for isolated systems of interacting particles: Localization and ergodicity energy space / F. M. Izrailev -- Effect of symmetry breaking on statistical distributions / G. E. Mitchell and J. F. Shriner, Jr. -- Quantum chaos and quantum computers / D. L. Shepelyansky -- Disorder and quantum chronodynamics - non-linear [symbol] models / T. Guhr and T. Wilke -- Correlations between periodic orbits and their role in spectral statistics / M. Sieber and K. Richeter -- Quantum spectra and wave functions in terms of periodic orbits for weakly chaotic systems / R. E. Prange, R. Narevich and O. Zaitsev -- Bifurcation of periodic orbit as semiclassical origin of superdeformed shell structure / K. Matsuyanagi -- Wavefunction localization and its semiclassical description in a 3-dimensional system with mixed classical dynamics / M. Brack, M. Sieber and S. M. Reimann -- Neutron stars and quantum billiards / A. Bulgac and P. Magierski -- Scars and other weak localization effects in classically chaotic systems / E. J. Heller -- Tunneling and chaos / S. Tomsovic -- Relaxation and fluctuations in quantum chaos / G. Casati -- Rydberg electrons in crossed fields: A paradigm for nonlinear dynamics beyond two degrees of freedom / T. Uzer -- Classical analysis of correlated multiple ionization in strong fields / B. Eckhardt and K. Sacha -- Classically forbidden processes in photoabsorption spectra / J. B. Delos ... [et al.] -- Quantum Hall effect breakdown steps due to an instability of laminar flow against electron-hole pair formation / L. Eaves -- Dynamical and wave chaos in the Bose-Einstein condensate / W. P. Reinhardt and S. B. McKinney -- Wave dynamical chaos: An experimental approach in billiards / A. Richter -- Acoustic chaos / C. Ellegaard, K. Schaadt and P. Bertelsen -- Ultrasound resonances in a rectangular plate described by random matrices / K. Schaadt, G. Simon and C. Ellegaard -- Quantum correlations and classical resonances in an open chaotic system / W. T. Lu ... [et al.] -- Why do an experiment, if theory is exact, and any experiment can at best approximate theory? / H.-J. Stockmann -- Wave-Chaotic optical resonators and lasers / A. D. Stone -- Angular momentum localization in oval billiards / J. U. Nockel -- Chaos and time-reversed acoustics / M. Fink -- Single-mode delay time statistics for scattering by a chaotic cavity / K. J. H. van Bemmel, H. Schomerus and C. W. J. Beenakker.

Proceedings of the Nineteenth Jerusalem Symposium in Quantum Chemistry and Biochemistry, held in Jerusalem, Israel, May 5-8, 1986

Detailed reviews of new and emerging topics in chemical physics presented by leading experts The Advances in Chemical Physics series is dedicated to reviewing new and emerging topics as well as the latest developments in traditional areas of study in the field of chemical physics. Each volume features detailed comprehensive analyses coupled with individual points of view that integrate the many disciplines of science that are needed for a full understanding of chemical physics. Volume 153 of Advances in Chemical Physics features six expertly written contributions: Recent advances of ultrafast X-ray absorption spectroscopy for molecules in solution Scaling perspective on intramolecular vibrational energy flow: analogies, insights, and challenges Longest relaxation time of relaxation processes for classical and quantum Brownian motion in a potential escape rate theory approach Local fluctuations in solution: theory and applications Macroscopic effects of microscopic heterogeneity Ab initio methodology for pseudospin Hamiltonians of anisotropic magnetic centers Reviews published in Advances in Chemical Physics are typically longer than those published in journals, providing the space needed for readers to fully grasp the topic: the fundamentals as well as the latest discoveries, applications, and emerging avenues of research. Extensive cross-referencing enables readers to explore the primary research studies underlying each topic. Advances in Chemical Physics is ideal for introducing novices to topics in chemical physics. Moreover, the series provides the foundation needed for more experienced researchers to advance their own research studies and continue to expand the boundaries of our knowledge in chemical physics.

Confinement and manipulation of photons using microcavities have triggered intense research interest in both basic and applied physics for more than a decade. Prominent examples are whispering gallery microcavities which confine photons by means of continuous total internal reflection along a curved and smooth surface. The long photon lifetime, strong field confinement, and in-plane emission characteristics make them promising candidates for enhancing light-matter interactions on a chip. In this book, we will introduce different ultra-high-Q whispering gallery microcavities, and focus on their applications in enhancing light-matter interaction, such as ultralow-threshold microlasing, highly sensitive optical biosensing, nonlinear optics, cavity quantum electrodynamics and cavity optomechanics.

The influential political philosopher Leo Strauss has been credited by conservatives with the recovery of the great tradition of political philosophy stretching back to Plato. Among Strauss's most enduring legacies is a strongly negative assessment of Nietzsche as the modern philosopher most at odds with that tradition and most responsible for the sins of twentieth-century culture—relativism, godlessness, nihilism, and the breakdown of family values. In fact, this apparent denunciation has become so closely associated with Strauss that it is often seen as the very core of his thought. In Leo Strauss and Nietzsche, the eminent Nietzsche scholar Laurence Lampert offers a controversial new assessment of the Strauss-Nietzsche connection. Lampert undertakes a searching examination of the key Straussian essay, "Note on the Plan of Nietzsche's Beyond Good and Evil." He shows that this essay, written toward the end of Strauss's life and placed at the center of his final work, reveals an affinity for and debt to Nietzsche greater than Strauss's followers allow. Lampert argues that the essay comprises the most important interpretation of Nietzsche ever published, one that clarifies Nietzsche's conception of nature and of human spiritual history and demonstrates the logical relationship between the essential themes in Nietzsche's thought—the will to power and the eternal return.

The PUILS series presents Progress in Ultrafast Intense Laser Science. This third volume in the series covers a diverse range of disciplines, focusing on such topics as strong field ionization of atoms, ionization and fragmentation of molecules and clusters, generation of high-order harmonics and attosecond pulses, filamentation and laser plasma interaction, and the development of ultrashort and ultrahigh-intensity light sources.